Dr. Lawrence Shah Profile

Dr. Lawrence Shah

Principal Scientist at Luminar Technologies Inc

SPIE Involvement:

Conference Program Committee | Author

Area of Expertise:

Ultrafast lasers , Laser materials processing , Fiber Lasers

Publications (64)

Proceedings Article | 10 June 2024 Presentation

Presentation

High-pulse energy 1550 nm seed laser technology for time-of-flight LiDAR systems

Hannah Grant, Alex Sincore, Andrew Trucks, Ali Abdulfattah, Sabrina Wagner, Cheng Zhu, Tony Drummer, Lawrence Shah, Richmond Hicks, Rob Still, Jon Faue, Depeesh Bangera, Joseph LaChapelle, Jason Eichenholz, Milan Mashanovitch, Paul Leisher, Steven Estrella

Proceedings Volume PC13029, PC1302904 (2024) https://doi.org/10.1117/12.3023508

KEYWORDS: Laser applications, LIDAR, Pulsed laser operation, Fiber lasers, Control systems, Semiconductors, Semiconductor lasers, Process control, Photonics, Nanolithography

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Proceedings Article | 13 March 2024 Presentation

Presentation

Demonstration of high-power 1.55 um DFB technology suitable for consumer automotive lidar

Hannah Grant, Sabrina Wagner, Peter Kliman, Alex Sincore, Andrew Trucks, Ali Abdulfattah, Gordon Morrison, Cheng Zhu, Lawrence Shah, Richmond Hicks, Joseph LaChapelle, Jason Eichenholz, Milan Mashanovitch, Paul Leisher

Proceedings Volume PC12866, PC128660D (2024) https://doi.org/10.1117/12.3002141

KEYWORDS: Control systems, Design and modelling, Telecommunications, Optics manufacturing, Optical fabrication, Manufacturing, Laser marking, Laser development, Laser applications, High power lasers

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Proceedings Article | 13 March 2024 Presentation

Presentation

An efficient and compact nanosecond pulsed Er-Yb doped fiber laser with broad operation temperature range

Cheng Zhu, Lawrence Shah, Alex Sincore, Lamees Satter, Hannah Grant, Erik Zucker, Sander Boelen, Alexander Grant, Maria Torres, Andrew Trucks, Ron Consiglio, Tony Drummer, Elias Soto, Zachary Bush, Richmond Hicks, Stephen Mielke, Alexander Yusim, Derek Harmon, Chris Ebert, Paul Leisher, Joseph LaChapelle, Jason Eichenholz

Proceedings Volume PC12865, PC128650J (2024) https://doi.org/10.1117/12.3003474

KEYWORDS: Pulsed laser operation, Fiber lasers, Temperature metrology, Single mode fibers, Reliability, Laser applications, LIDAR, Surgery, Industrial applications, Environmental sensing

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Proceedings Article | 14 May 2018 Presentation

Presentation

Chalcogenide fibers for improved reliability of active infrared sensing systems (Conference Presentation)

Justin Cook, Alex Sincore, Felix Tan, Ahmed El Halawany, Anthony Riggins, Lawrence Shah, Ayman Abouraddy, Martin Richardson, Kenneth Schepler

Proceedings Volume 10637, 106370T (2018) https://doi.org/10.1117/12.2305229

KEYWORDS: Optical fibers, Chalcogenides, Sensing systems, Reliability, Infrared detection, Defense and security, Mirrors, Modulators, Infrared sensors, Sensors

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Proceedings Article | 4 May 2018 Presentation + Paper

Presentation + Paper

700 μJ, 100 ns, 20 kHz pulses from a 1.5 m Thulium-doped fiber amplifier

Ali Abdulfattah, Alex Sincore, Joshua Bradford, Nathan Bodnar, Justin Cook, Lawrence Shah, Martin Richardson

Proceedings Volume 10637, 106370I (2018) https://doi.org/10.1117/12.2305160

KEYWORDS: Fiber amplifiers, Oscillators, Amplifiers, Fiber lasers, Q switching, Laser systems engineering, Thulium

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Proceedings Article | 4 May 2018 Presentation + Paper

Presentation + Paper

Progress on high-power Yb, Tm and Raman fiber lasers

Patrick Roumayah, Alex Sincore, Justin Cook, Joshua Bradford, Jose Enrique Antonio-Lopez, Stefan Gausmann, Dong Jin Shin, Ali Abdulfattah, Lawrence Shah, Axel Schülzgen, Rodrigo Amezcua Correa, Martin Richardson

Proceedings Volume 10637, 1063702 (2018) https://doi.org/10.1117/12.2305241

KEYWORDS: Fiber lasers, Raman spectroscopy, Cladding, Refractive index, Fiber amplifiers, Ytterbium, Thulium, Graded index fibers, Amplifiers, Optical amplifiers

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Proceedings Article | 26 February 2018 Presentation + Paper

Presentation + Paper

Demonstration of passively cooled high-power Yb fiber amplifier

Joshua Bradford, Justin Cook, Jose Enrique Antonio-Lopez, Larry Shah, Rodrigo Amezcua Correa, Martin Richardson

Proceedings Volume 10512, 105121G (2018) https://doi.org/10.1117/12.2290243

KEYWORDS: Optical amplifiers, Fiber amplifiers, Ytterbium, Interferometers, Temperature metrology, Amplifiers, Convection, Interferometry, Single mode fibers, Fringe analysis

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Proceedings Article | 20 February 2018 Paper

Paper

Mid-infrared performance of single mode chalcogenide fibers

Justin Cook, Alex Sincore, Felix Tan, Ahmed El Halawany, Anthony Riggins, Lawrence Shah, Ayman Abouraddy, Martin Richardson, Kenneth Schepler

Proceedings Volume 10513, 105131H (2018) https://doi.org/10.1117/12.2290127

KEYWORDS: Optical fibers, Quantum cascade lasers, Cladding, Polymers, Glasses, Mid-IR, Chalcogenides, Solids, Fiber lasers, Laser systems engineering

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Proceedings Article | 21 April 2017 Presentation

Presentation

Mobile terawatt laser propagation facility (Conference Presentation)

Lawrence Shah, Patrick Roumayah, Nathan Bodnar, Joshua Bradford, Douglas Maukonen, Martin Richardson

Proceedings Volume 10082, 1008218 (2017) https://doi.org/10.1117/12.2253736

KEYWORDS: Laser systems engineering, Control systems, Atmospheric propagation, Laser beam propagation, Pulsed laser operation, Femtosecond phenomena, Fiber lasers, Oscillators, Fiber Bragg gratings, Sensing systems

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Proceedings Article | 7 March 2017 Presentation + Paper

Presentation + Paper

Nonlinear processes associated with the amplification of MHz-linewidth laser pulses in single-mode Tm:fiber

Alex Sincore, Nathan Bodnar, Joshua Bradford, Ali Abdulfattah, Lawrence Shah, Martin Richardson

Proceedings Volume 10083, 100830K (2017) https://doi.org/10.1117/12.2251033

KEYWORDS: Modulation, Bragg cells, Nonlinear dynamics, Laser scattering, Scattering, Amplifiers, Diodes, Raman scattering, Four wave mixing

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Proceedings Article | 22 April 2016 Paper

Paper

Integrated pulse stretchers for high-energy CPA and OPCPA systems

Lawrence Shah, Nathan Bodnar, Patrick Roumayah, Benjamin Webb, Joshua Bradford, Martin Richardson

Proceedings Volume 9730, 97300V (2016) https://doi.org/10.1117/12.2212900

KEYWORDS: Fiber Bragg gratings, Pulsed laser operation, Optical design, Ultrafast phenomena, Laser optics, Optical amplifiers, Diffraction gratings, Solid state lasers, Dispersion, Laser systems engineering, Integrated optics, Picosecond phenomena, Oscillators, Adaptive optics

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Proceedings Article | 11 March 2016 Paper

Paper

Comparison of in-band pumped Tm:fiber and Ho:fiber

Alex Sincore, Lawrence Shah, Vadim Smirnov, Martin Richardson

Proceedings Volume 9728, 97280S (2016) https://doi.org/10.1117/12.2209440

KEYWORDS: Fiber lasers, Oscillators, Semiconductor lasers, Quantum efficiency, Absorption, Holmium, Diodes, Thulium, Optical fibers, Doping

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Proceedings Article | 20 May 2015 Paper

Paper

Analysis and modeling of a high power side diode pumped solid state laser system

Tamer Kashef, Ayman Mokhtar, Samy Ghoniemy, Lawrence Shah, Martin Richardson

Proceedings Volume 9466, 94660X (2015) https://doi.org/10.1117/12.2190069

KEYWORDS: Semiconductor lasers, Diodes, Nd:YAG lasers, Diode pumped solid state lasers, Laser systems engineering, Resonators, Optical simulations, Systems modeling, High power lasers, Mirrors

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Proceedings Article | 4 March 2015 Paper

Paper

Resonantly pumped amplification in a Tm-doped large mode-area photonic crystal fiber

Alex Sincore, Lawrence Shah, Mateusz Wysmolek, Robert Ryan, Ali Abdulfattah, Martin Richardson

Proceedings Volume 9344, 93441R (2015) https://doi.org/10.1117/12.2080679

KEYWORDS: Fiber lasers, Photonic crystal fibers, Oscillators, Optical amplifiers, Cladding, Semiconductor lasers, Linear filtering, Laser systems engineering, Step index fibers, Collimation

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Proceedings Article | 4 March 2015 Paper

Paper

Trans-wafer removal of metallization using a nanosecond Tm:fiber laser

Ilya Mingareev, Sascha Berger, Thomas Tetz, Ali Abdulfattah, Alex Sincore, Lawrence Shah, Martin Richardson

Proceedings Volume 9350, 93500B (2015) https://doi.org/10.1117/12.2079982

KEYWORDS: Semiconducting wafers, Silicon, Semiconductors, Gallium arsenide, Absorption, Coating, Semiconductor lasers, Resistance, Laser applications, Oscillators

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SPIE Journal Paper | 25 August 2014

Comparative study of light propagation and single-mode operation in large-mode area fibers designed for 2-μm laser applications

Clémence Jollivet, Bryce Samson, Lasse Leick, Lawrence Shah, Martin Richardson, Axel Schulzgen

OE, Vol. 54, Issue 01, 011006, (August 2014) https://doi.org/10.1117/12.10.1117/1.OE.54.1.011006

KEYWORDS: Transducers, Aluminum, Wave plates, Waveguides, Wave propagation, Optical engineering, Electrodes, Feature extraction, Damage detection, Signal detection

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Proceedings Article | 1 July 2014 Paper

Paper

Examination of laser-induced heating on multi-component chalcogenide glass

Laura Sisken, Nils Gehlich, Joshua Bradford, Ali Abdulfattah, Larry Shah, Martin Richardson, Kathleen Richardson

Proceedings Volume 9070, 90701A (2014) https://doi.org/10.1117/12.2053316

KEYWORDS: Glasses, Crystals, Chalcogenide glass, Laser crystals, Laser ablation, Solids, Infrared radiation, Ceramics, Neodymium, Ions

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Proceedings Article | 9 June 2014 Paper

Paper

Thulium fiber laser and application development

Lawrence Shah, Christian Gaida, Martin Gebhardt, Alex Sincore, Joshua Bradford, Nils Gehlich, Ilya Mingareev, Martin Richardson

Proceedings Volume 9081, 90810H (2014) https://doi.org/10.1117/12.2053297

KEYWORDS: Fiber lasers, Laser development, Laser applications, YAG lasers, Fiber amplifiers, Optical amplifiers, Defense and security, Mid-IR, Optical parametric oscillators, Thulium

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Proceedings Article | 11 March 2014 Paper

Paper

Photonic crystal fiber pump combiner for high-peak power all-fiber thulium lasers

Alex Sincore, Jason Tafoya, Donald Sipes, Lasse Leick, Lawrence Shah, Martin Richardson

Proceedings Volume 8961, 896133 (2014) https://doi.org/10.1117/12.2041327

KEYWORDS: Photonic crystal fibers, Fiber lasers, Polarization, Amplifiers, Modulation, Fiber amplifiers, YAG lasers, Optical amplifiers, Optical isolators, Superluminescent sources

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Proceedings Article | 6 March 2014 Paper

Paper

Utilizing the transparency of semiconductors via "backside" machining with a nanosecond 2 um Tm:fiber laser

Nils Gehlich, Tobias Bonhoff, Laura Sisken, Mark Ramme, Christian Gaida, Martin Gebhardt, Ilya Mingareev, Lawrence Shah, Martin Richardson

Proceedings Volume 8968, 89680W (2014) https://doi.org/10.1117/12.2040306

KEYWORDS: Semiconducting wafers, Silicon, Gallium arsenide, Semiconductors, Semiconductor lasers, Laser processing, Transparency, Absorption, Pulsed laser operation, Scanning electron microscopy

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Proceedings Article | 28 February 2014 Paper

Paper

Picosecond DPSS laser technology for OPCPA pumping

Andreas Vaupel, Nathan Bodnar, Benjamin Webb, Lawrence Shah, Martin Richardson

Proceedings Volume 8959, 895918 (2014) https://doi.org/10.1117/12.2039595

KEYWORDS: Optical amplifiers, Picosecond phenomena, Diode pumped solid state lasers, Amplifiers, Nd:YAG lasers, Laser applications, Oscillators, Thermal effects, Solid state lasers, Optical pumping

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Proceedings Article | 20 February 2014 Paper

Paper

Measurement of thermal lensing in GaAs induced by 100 W Tm:fiber laser

Joshua Bradford, Konstantin Vodopyanov, Peter Schunemann, Lawrence Shah, Martin Richardson

Proceedings Volume 8964, 896419 (2014) https://doi.org/10.1117/12.2041323

KEYWORDS: Gallium arsenide, Mid-IR, Semiconducting wafers, Wavefront sensors, Refractor telescopes, Optical parametric oscillators, Laser beam diagnostics, Distortion, Thermal effects, Optical testing

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SPIE Journal Paper | 31 December 2013 Open Access

Open Access

Concepts, performance review, and prospects of table-top, few-cycle optical parametric chirped-pulse amplification

Andreas Vaupel, Nathan Bodnar, Benjamin Webb, Lawrence Shah, Martin Richardson

OE, Vol. 53, Issue 05, 051507, (December 2013) https://doi.org/10.1117/12.10.1117/1.OE.53.5.051507

KEYWORDS: Picosecond phenomena, Optical amplifiers, Crystals, Diode pumped solid state lasers, Pulsed laser operation, Optical fibers, Laser systems engineering, Laser applications, Fiber amplifiers, Oscillators

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Proceedings Article | 14 November 2013 Paper

Paper

High-power laser testing of 3D meta-optics

A. Pung, I. Raghu Srimathi, Y. Li, E. Johnson, M. Shinn, K. J. Lee, R. Magnusson, J. Talghader, L. Taylor, L. Shah, M. Richardson

Proceedings Volume 8885, 88850K (2013) https://doi.org/10.1117/12.2032410

KEYWORDS: Reflectivity, Waveguides, Photoresist materials, High power lasers, Silica, Etching, Optical components, Polarization, Silicon, Atomic layer deposition

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Proceedings Article | 1 April 2013 Paper

Paper

Resonant optical devices for IR lasers

Eric Johnson, Yuan Li, Indumathi Raghu Srimathi, Ryan Woodward, Menelaos Poutous, Aaron Pung, Martin Richardson, Lawrence Shah, Ramesh Shori, Robert Magnusson

Proceedings Volume 8599, 85991G (2013) https://doi.org/10.1117/12.2012525

KEYWORDS: Mid-IR, Fiber lasers, Mirrors, Optical filters, Optical components, Infrared lasers, Laser systems engineering, Reflectivity, Quartz, Polarization

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Proceedings Article | 22 March 2013 Paper

Paper

Peak power scaling in Tm doped fiber lasers to MW-level

Christian Gaida, Martin Gebhardt, Pankaj Kadwani, Lasse Leick, Jes Broeng, Lawrence Shah, Martin Richardson

Proceedings Volume 8601, 86012Y (2013) https://doi.org/10.1117/12.2004467

KEYWORDS: Thulium, Fiber lasers, Mirrors, Oscillators, Reflectivity, Amplifiers, Diffraction, Optical amplifiers, Cladding, Photonics

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Proceedings Article | 22 March 2013 Paper

Paper

Chirped pulse amplification in Tm doped fiber using a chirped Bragg grating

Robert Andrew Sims, Pankaj Kadwani, Lawrence Shah, Martin Richardson

Proceedings Volume 8601, 86012P (2013) https://doi.org/10.1117/12.2004112

KEYWORDS: Fiber Bragg gratings, Mode locking, Thulium, Fiber lasers, Oscillators, Phase modulation, Fiber amplifiers, Optical isolators, Femtosecond phenomena, Solitons

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Proceedings Article | 18 March 2013 Paper

Paper

Thermo-optic quality assessment of doped optical ceramics

Christina C. Willis, Joshua Bradford, Emily Maddox, Lawrence Shah, Martin Richardson

Proceedings Volume 8599, 85990Z (2013) https://doi.org/10.1117/12.2004360

KEYWORDS: Ceramics, Crystals, Thermography, Wavefront sensors, Laser applications, Thermal optics, Diagnostics, Absorption, Diodes, High power lasers

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Proceedings Article | 9 March 2013 Paper

Paper

Silicon backside machining using a nanosecond 2-µm Tm:fiber laser

Lawrence Shah, Tobias Bonhoff, Thomas Ferhat, Ashraf El-Sherif, Mark Ramme, Christina C. Willis, Matthieu Baudelet, Pankaj Kadwani, Christian Gaida, Martin Gebhardt, Ilya Mingareev, Martin Richardson

Proceedings Volume 8612, 861207 (2013) https://doi.org/10.1117/12.2004878

KEYWORDS: Silicon, Semiconductor lasers, Semiconducting wafers, Oscillators, Laser ablation, Pulsed laser operation, Laser damage threshold, Laser applications, Laser systems engineering, Optical parametric oscillators

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Proceedings Article | 7 May 2012 Paper

Paper

Modal properties of photonic crystal fiber for high-power two micron fiber laser systems

C. Jollivet, T. Alkeskjold, L. Leick, P. Kadwani, R. Sims, L. Shah, M. Richardson, R. Amezcua Correa, A. Schülzgen

Proceedings Volume 8381, 838105 (2012) https://doi.org/10.1117/12.921585

KEYWORDS: Fiber lasers, Laser systems engineering, Fourier transforms, Photonic crystal fibers, Cladding, Neodymium, Optical fibers, Ions, Photonic crystals, Laser development

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Proceedings Article | 7 May 2012 Paper

Paper

CW and pulsed performance of Tm-doped photonic crystal fiber lasers

Pankaj Kadwani, R. Andrew Sims, Lasse Leick, Jes Broeng, Lawrence Shah, Martin Richardson

Proceedings Volume 8381, 83811F (2012) https://doi.org/10.1117/12.925408

KEYWORDS: Fiber lasers, Q switching, Thulium, Photonic crystal fibers, Continuous wave operation, Oscillators, Cladding, Mirrors, Pulsed laser operation, Polarization

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Proceedings Article | 7 May 2012 Paper

Paper

Integrated 100 W thulium fiber MOPA system

Lawrence Shah, R. Andrew Sims, Pankaj Kadwani, Christina C. Willis, Joshua Bradford, Zachary Roth, Aaron Pung, Menelous Poutous, Eric Johnson, Martin Richardson

Proceedings Volume 8381, 83810Z (2012) https://doi.org/10.1117/12.925411

KEYWORDS: Phase modulation, Oscillators, Fiber lasers, Fiber amplifiers, Optical amplifiers, Polarization, Optical isolators, Thulium, System integration, Amplifiers

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Proceedings Article | 16 February 2012 Paper

Paper

Lasing in thulium doped polarizing photonic crystal fibers (PCF)

Pankaj Kadwani, Norbert Modsching, R. Andrew Sims, Lasse Leick, Jes Broeng, Lawrence Shah, Martin Richardson

Proceedings Volume 8237, 82372Z (2012) https://doi.org/10.1117/12.909440

KEYWORDS: Thulium, Polarization, Cladding, Absorption, Fiber lasers, Oscillators, Photonic crystal fibers, Optical pumping, Mid-IR, Laser systems engineering

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Proceedings Article | 16 February 2012 Paper

Paper

Integrated 100-W polarized narrow linewidth thulium fiber MOPA system

Lawrence Shah, R. Andrew Sims, Pankaj Kadwani, Christina C. Willis, Joshua Bradford, Zachary Roth, Aaron Pung, Menelaos Poutous, Eric Johnson, Martin Richardson

Proceedings Volume 8237, 82371M (2012) https://doi.org/10.1117/12.909292

KEYWORDS: Oscillators, Phase modulation, Optical amplifiers, Polarization, Diodes, Amplifiers, Thulium, Fiber lasers, Fiber amplifiers, High power fiber amplifiers

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Proceedings Article | 16 February 2012 Paper

Paper

Q switched PM Tm: fiber laser oscillator for mid-IR generation

Pankaj Kadwani, R. Andrew Sims, Lawrence Shah, Martin Richardson

Proceedings Volume 8237, 82373G (2012) https://doi.org/10.1117/12.909332

KEYWORDS: Fiber lasers, Oscillators, Thulium, Q switching, Q switched fiber lasers, Phase modulation, Mid-IR, Photonics, Cladding, Laser applications

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Proceedings Article | 7 February 2012 Paper

Paper

High-power transmission characterization of Chalcogenide glasses using a Tm:fiber laser system

Pankaj Kadwani, Joshua Bradford, R. Andrew Sims, David Musgraves, Kathleen Richardson, Lawrence Shah, Martin Richardson

Proceedings Volume 8239, 82390A (2012) https://doi.org/10.1117/12.909505

KEYWORDS: Silica, High power lasers, Chalcogenide glass, Laser systems engineering, Selenium, Fiber lasers, Semiconductor lasers, Near infrared, Thermal optics, Absorption

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Proceedings Article | 4 June 2011 Paper

Paper

Generation and amplification of femtosecond pulses in Tm:fiber

R. Andrew Sims, Pankaj Kadwani, Lawrence Shah, Martin Richardson

Proceedings Volume 8039, 80390K (2011) https://doi.org/10.1117/12.886422

KEYWORDS: Oscillators, Raman spectroscopy, Thulium, Mode locking, Solitons, Fiber lasers, Optical amplifiers, Femtosecond phenomena, Optical filters, Fiber amplifiers

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Proceedings Article | 26 May 2011 Paper

Paper

Monolithic narrow linewidth polarization-maintaining thulium fiber laser using femtosecond laser written fiber Bragg gratings

Christina C. Willis, Joshua Bradford, R. Andrew Sims, Lawrence Shah, Martin Richardson, Jens Thomas, Ria Becker, Christian Voigtländer, Andreas Tünnermann, Stefan Nolte

Proceedings Volume 8039, 80390H (2011) https://doi.org/10.1117/12.885989

KEYWORDS: Fiber Bragg gratings, Polarization, Fiber lasers, Reflectivity, YAG lasers, Femtosecond phenomena, Laser systems engineering, Optical components, Optical fibers, Phase modulation

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Proceedings Article | 26 May 2011 Paper

Paper

Atmospheric gas detection using broadband mid-IR thulium fiber-based sources

Pankaj Kadwani, Robert Sims, Jeffrey Chia, Falah Altal, Lawrence Shah, Martin Richardson

Proceedings Volume 8039, 80390L (2011) https://doi.org/10.1117/12.887020

KEYWORDS: Superluminescent sources, Carbon dioxide, Absorption, Atmospheric sensing, Atmospheric optics, Raman spectroscopy, Optical amplifiers, Thulium, Mid-IR, Optical components

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Proceedings Article | 22 February 2011 Paper

Paper

Generation and amplification of 350 fs, 2 µm pulses in Tm:fiber

R. Andrew Sims, Pankaj Kadwani, Lawrence Shah, Martin Richardson

Proceedings Volume 7914, 79141L (2011) https://doi.org/10.1117/12.877765

KEYWORDS: Oscillators, Raman spectroscopy, Amplifiers, Thulium, Mode locking, Dispersion, Fiber lasers, Optical filters, Picosecond phenomena, Modulation

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Proceedings Article | 11 February 2011 Paper

Paper

All-fiber single-mode PM thulium fiber lasers using femtosecond laser written fiber Bragg gratings

Christina C. Willis, Joshua Bradford, R. Andrew Sims, Lawrence Shah, Martin Richardson, Jens Thomas, Ria Becker, Christian Voigtländer, Andreas Tünnermann, Stefan Nolte

Proceedings Volume 7914, 79140I (2011) https://doi.org/10.1117/12.877795

KEYWORDS: Fiber Bragg gratings, Fiber lasers, Polarization, Phase modulation, YAG lasers, Thulium, Continuous wave operation, Femtosecond phenomena, Laser systems engineering, Birefringence

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Proceedings Article | 10 February 2011 Paper

Paper

Atmospheric absorption spectroscopy using Tm: fiber sources around two microns

Pankaj Kadwani, Jeffrey Chia, Faleh Altal, Robert Sims, Christina Willis, Lawrence Shah, Dennis Killinger, Martin Richardson

Proceedings Volume 7924, 79240L (2011) https://doi.org/10.1117/12.875167

KEYWORDS: Raman spectroscopy, Carbon dioxide, Absorption, Superluminescent sources, Thulium, Fiber amplifiers, Optical amplifiers, Absorption spectroscopy, Oscillators, Optical fibers

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Proceedings Article | 17 February 2010 Paper

Paper

Atmospheric propagation testing with a high power, tunable thulium fiber laser system

Timothy McComb, Lawrence Shah, R. Andrew Sims, Christina C. Willis, Pankaj Kadwani, Vikas Sudesh, Martin Richardson

Proceedings Volume 7578, 75781G (2010) https://doi.org/10.1117/12.842378

KEYWORDS: Atmospheric propagation, Fiber lasers, Thulium, Molybdenum, Laser systems engineering, Optical amplifiers, Quantum efficiency, YAG lasers, Oscillators, Atmospheric modeling

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Proceedings Article | 17 February 2010 Paper

Paper

Spectral beam combining of thulium fiber laser systems

R. Andrew Sims, Christina C. Willis, Pankaj Kadwani, Timothy McComb, Lawrence Shah, Vikas Sudesh, Zachary Roth, Menelaos Poutous, Eric Johnson, Martin Richardson

Proceedings Volume 7580, 75801Q (2010) https://doi.org/10.1117/12.842500

KEYWORDS: Fiber lasers, Diffraction gratings, Oscillators, Laser systems engineering, Fiber amplifiers, Optical amplifiers, YAG lasers, Thulium, Silica, Metals

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Proceedings Article | 17 February 2010 Paper

Paper

High power tunable thulium fiber laser with volume Bragg grating spectral control

Timothy McComb, Lawrence Shah, R. Andrew Sims, Vikas Sudesh, Martin Richardson

Proceedings Volume 7580, 75801F (2010) https://doi.org/10.1117/12.842351

KEYWORDS: Reflectivity, Fiber lasers, Mirrors, Fiber Bragg gratings, Thulium, YAG lasers, Laser resonators, Diodes, Laser applications, Tunable lasers

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Proceedings Article | 17 February 2010 Paper

Paper

High-energy Q-switched Tm3+-doped polarization maintaining silica fiber laser

Christina C. Willis, Lawrence Shah, Matthieu Baudelet, Pankaj Kadwani, Timothy McComb, R. Andrews Sims, Vikas Sudesh, Martin Richardson

Proceedings Volume 7580, 758003 (2010) https://doi.org/10.1117/12.843003

KEYWORDS: Fiber lasers, Laser induced breakdown spectroscopy, Q switched lasers, Copper, Mirrors, Polarization, YAG lasers, Thulium, Laser systems engineering, Fiber Bragg gratings

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Proceedings Article | 17 February 2010 Paper

Paper

Spectral narrowing and stabilization of thulium fiber lasers using guided-mode resonance filters

R. Sims, Tanya Dax, Zachary Roth, Timothy McComb, Lawrence Shah, Vikas Sudesh, Menelaos Poutous, Eric Johnson, Martin Richardson

Proceedings Volume 7580, 75800F (2010) https://doi.org/10.1117/12.842474

KEYWORDS: Fiber lasers, Oscillators, Thulium, Reflectivity, Optical filtering, Diffraction gratings, Dielectric polarization, Polarization, YAG lasers, Laser stabilization

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Proceedings Article | 11 May 2009 Paper

Paper

Wideband lasers on manned/unmanned platforms under poly-environment

Lawrence Shah, John Zeller, Martin Richardson, Michael Talbert, Gunasekaran Seetharaman, Tariq Manzur

Proceedings Volume 7332, 733203 (2009) https://doi.org/10.1117/12.821792

KEYWORDS: Free space optics, Mid-IR, Laser applications, Atmospheric modeling, Infrared radiation, High power lasers, Laser sources, Laser optics, Telecommunications, Free space optical communications

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Proceedings Article | 9 May 2009 Paper

Paper

Latest developments in high-power tunable CW narrow line thulium fiber laser for deployment to the ISTEF

Vikas Sudesh, Timothy McComb, Robert Sims, Lawrence Shah, Martin Richardson, John Stryjewski

Proceedings Volume 7325, 73250B (2009) https://doi.org/10.1117/12.820814

KEYWORDS: Optical amplifiers, Oscillators, Fiber lasers, Tunable lasers, Amplifiers, Thulium, Mirrors, Fiber amplifiers, Atmospheric propagation, YAG lasers

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Proceedings Article | 28 February 2009 Paper

Paper

Widely tunable (>100 nm) continuous-wave narrow-linewidth high-power thulium fiber laser

Timothy McComb, Vikas Sudesh, Lawrence Shah, Robert Sims, Martin Richardson

Proceedings Volume 7193, 71931I (2009) https://doi.org/10.1117/12.815316

KEYWORDS: Molybdenum, Fiber lasers, Optical amplifiers, Mirrors, Oscillators, YAG lasers, Thulium, Atmospheric propagation, Fiber amplifiers, Cladding

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Proceedings Article | 7 February 2009 Paper

Paper

Latest developments of ultrafast fiber laser and its material applications

G. C. Cho, B. Liu, L. Shah, Z. Liu, Y. Che, J. Xu

Proceedings Volume 7214, 72140R (2009) https://doi.org/10.1117/12.808582

KEYWORDS: Ultrafast phenomena, Fiber lasers, Fiber amplifiers, Femtosecond phenomena, Nanoparticles, Semiconducting wafers, Particles, Silicon, Laser ablation, Crystals

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Proceedings Article | 12 May 2008 Paper

Paper

Fabrication of microfluidic networks using a high power femtosecond fiber laser

Lawrence Shah, Dong Hyuck Kam, Jyotirmoy Mazumder

Proceedings Volume 7005, 70050E (2008) https://doi.org/10.1117/12.782655

KEYWORDS: Etching, Microfluidics, Femtosecond phenomena, Femtosecond fiber lasers, Silicon, Ultrafast phenomena, Laser ablation, Semiconductor lasers, Scanning electron microscopy, Prototyping

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Proceedings Article | 23 February 2008 Paper

Paper

Laser micromachining of branching networks

DongHyuck Kam, Lawrence Shah, Jyotirmoy Mazumder

Proceedings Volume 6880, 68800S (2008) https://doi.org/10.1117/12.761821

KEYWORDS: Silicon, Wet etching, Laser ablation, Femtosecond phenomena, Semiconductor lasers, Semiconducting wafers, Lung, Scanning electron microscopy, Pulsed laser operation, Etching

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Proceedings Article | 20 February 2007 Paper

Paper

Compact 50W ultrashort pulse fiber laser for precision and high-speed material processing

L. Shah, M. Fermann, J. Dawson, C. Barty

Proceedings Volume 6453, 64530Z (2007) https://doi.org/10.1117/12.713437

KEYWORDS: Ultrafast phenomena, Fiber lasers, Micromachining, Laser ablation, Fiber amplifiers, Dielectrics, Glasses, Materials processing, Diffraction gratings, Aluminum

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Proceedings Article | 8 September 2006 Paper

Paper

Fiber chirped pulse amplification system for micromachining

A. Arai, J. Bovatsek, F. Yoshino, Z. Liu, G. Cho, L. Shah, M. Fermann, Y. Uehara

Proceedings Volume 6343, 63430S (2006) https://doi.org/10.1117/12.707699

KEYWORDS: Glasses, Fiber amplifiers, Femtosecond phenomena, Waveguides, Sapphire, Semiconducting wafers, Optics manufacturing, Silicon, Micromachining, Ultrafast phenomena

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Proceedings Article | 28 February 2006 Paper

Paper

Optimized precision micromachining using commercially available high-repetition rate microjoule femtosecond fiber lasers

Michelle Stock, Lawrence Shah, Bing Liu, Makoto Yoshida, Fumiyo Yoshino, James Bovatsek, Alan Arai

Proceedings Volume 6108, 61080Q (2006) https://doi.org/10.1117/12.659866

KEYWORDS: Fiber lasers, Waveguides, Ultrafast phenomena, Laser processing, Materials processing, Laser systems engineering, Femtosecond fiber lasers, Micromachining, Ultrafast lasers, Oscillators

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Proceedings Article | 23 February 2006 Paper

Paper

Ultrafast high energy amplifiers beyond the B-integral limit

L. Shah, Z. Liu, I. Hartl, G. Imeshev, G. C. Cho, M. Fermann

Proceedings Volume 6102, 61020Z (2006) https://doi.org/10.1117/12.659365

KEYWORDS: Ultrafast phenomena, Fiber lasers, Fiber amplifiers, Pulsed laser operation, Scanning probe microscopy, Solid state lasers, Laser processing, Optical amplifiers, Single mode fibers, Oscillators

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Proceedings Article | 12 April 2005 Paper

Paper

Thermal heating effects in writing optical waveguides with 0.1 - 5 MHz repetition rate

Shane Eaton, Fumiyo Yoshino, Lawrence Shah, Alan Arai, Haibin Zhang, Stephen Ho, Peter Herman

Proceedings Volume 5713, (2005) https://doi.org/10.1117/12.591058

KEYWORDS: Waveguides, Silica, Thermal effects, Glasses, Borosilicate glass, Ultrafast lasers, Optical microscopes, Signal attenuation, Refractive index, Pulsed laser operation

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Proceedings Article | 21 March 2005 Paper

Paper

MHz-rate ultrafast fiber laser for writing of optical waveguides in silica glasses

Lawrence Shah, Fumiyo Yoshino, Alan Arai, Shane Eaton, Haibin Zhang, Stephen Ho, Peter Herman

Proceedings Volume 5714, (2005) https://doi.org/10.1117/12.590850

KEYWORDS: Waveguides, Silica, Glasses, Femtosecond phenomena, Laser processing, Microscopes, Borosilicate glass, Oscillators, Wave propagation, Laser systems engineering

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Proceedings Article | 8 October 2004 Paper

Paper

Laser ablation threshold and etch rate comparison between the ultrafast Yb fiber-based FCPA laser and a Ti:sapphire laser for various materials

James Bovatsek, Lawrence Shah, Alan Arai, Yuzuru Uehara

Proceedings Volume 5662, (2004) https://doi.org/10.1117/12.596573

KEYWORDS: Laser damage threshold, Germanium, Laser ablation, Copper, Sapphire lasers, Aluminum, Etching, Pulsed laser operation, Semiconductors, Dielectrics

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Proceedings Article | 10 June 2004 Paper

Paper

Ablation and optical property modification of transparent materials with femtosecond lasers

Martin Richardson, Arnaud Zoubir, Lawrence Shah, Clara Rivero, Cedric Lopez, Kathleen Richardson, Nicolas Ho, Real Vallee

Proceedings Volume 5273, (2004) https://doi.org/10.1117/12.530684

KEYWORDS: Femtosecond phenomena, Laser ablation, Waveguides, Glasses, Micromachining, Ionization, Silicate glass, Laser processing, Laser drilling, Refractive index

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Proceedings Article | 13 September 2002 Paper

Paper

Technology developments toward the practical use of femtosecond laser micromaterials processing

Arnaud Zoubir, Lawrence Shah, Kathleen Richardson, Martin Richardson

Proceedings Volume 4760, (2002) https://doi.org/10.1117/12.482110

KEYWORDS: Femtosecond phenomena, Laser ablation, Glasses, Waveguides, Ionization, Silicate glass, Silicates, Materials processing, Composites, Lead

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Proceedings Article | 4 May 1999 Paper

Paper

Laser action in Yb3+: YCOB (Yb3+:YCa4O(BO3)3)

Dennis Hammons, Jason Eichenholz, Lawrence Shah, Q. Ye, Robert Peale, Bruce Chai, Martin Richardson, Aland Chin

Proceedings Volume 3613, (1999) https://doi.org/10.1117/12.347683

KEYWORDS: Crystals, Laser crystals, Semiconductor lasers, Nonlinear crystals, Absorption, Ytterbium, Luminescence, Tunable lasers, Continuous wave operation, Diodes

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Proceedings Article | 4 May 1999 Paper

Paper

Diode-pumped laser action and self-frequency doubling in Nd3+:YCOB

Jason Eichenholz, Dennis Hammons, Lawrence Shah, Q. Ye, Martin Richardson, Bruce Chai, Aland Chin, John Cary

Proceedings Volume 3613, (1999) https://doi.org/10.1117/12.347698

KEYWORDS: Crystals, Semiconductor lasers, Laser crystals, Diodes, Output couplers, Absorption, Polarization, Mirrors, Laser resonators, Solid state lasers

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Showing 5 of 64 publications

Conference Committee Involvement (8)

Fiber Lasers XXII: Technology and Systems

27 January 2025 | San Francisco, California, United States

Fiber Lasers XXI: Technology and Systems

29 January 2024 | San Francisco, California, United States

Fiber Lasers XX: Technology and Systems

30 January 2023 | San Francisco, California, United States

Fiber Lasers XIX: Technology and Systems

24 January 2022 | San Francisco, California, United States

Fiber Lasers XVIII: Technology and Systems

6 March 2021 | Online Only, California, United States

Showing 5 of 8 Conference Committees

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