Prof. Robert Fedosejevs Profile

Prof. Robert Fedosejevs

Professor at Univ of Alberta

SPIE Involvement:

Author

Publications (25)

Proceedings Article | 13 May 2019 Presentation

Possibility of an in situ gauge for PW relativistic intensities (Conference Presentation)

Luis Roso, José Antonio Pérez-Hernandez, Massimo De Marco, Giancarlo Gatti, Wendell Hill, Calvin He, Robert Fedosejevs, Andrew Longman

Proceedings Volume 11034, 1103408 (2019) https://doi.org/10.1117/12.2523004

KEYWORDS: Chemical species, Doppler effect, Electrons, Thomson scattering, Pulsed laser operation, High power lasers, Plasma, Laser scattering, Nondestructive evaluation, Numerical simulations

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Proceedings Article | 24 April 2019 Paper

Characterisation of a laser plasma accelerator x-ray source size using a Kirkpatrick-Baez microscope

M. Shazad, L. Reid, R. Spesyvtsev, A. Maitrallain, G. Holt, G. Zeraouli, W. Li, G. Vieux, E. Brunetti, S. Wiggins, G. Gatti, D. De Luis, L. Volpe, R. Fedosejevs, D. Jaroszynski

Proceedings Volume 11036, 110360Q (2019) https://doi.org/10.1117/12.2522778

KEYWORDS: Mirrors, Plasma, X-rays, Microscopes, X-ray sources, Silicon, Semiconducting wafers, Image resolution, Metrology, Platinum

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Proceedings Article | 24 October 2012 Paper

High sensitivity surface enhanced Raman scattering detection of organic molecules and amino acids

A. Kandakkathara, I. Utkin, R. Fedosejevs

Proceedings Volume 8412, 84120E (2012) https://doi.org/10.1117/12.2007352

KEYWORDS: Surface enhanced Raman spectroscopy, Silver, Composites, Raman spectroscopy, Molecules, Sodium, Adaptive optics, Raman scattering, Charge-coupled devices, Rhodamine B

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SPIE Journal Paper | 1 September 2010 Open Access

Optical resolution photoacoustic microscopy using novel high-repetition-rate passively Q-switched microchip and fiber lasers

Wei Shi, Shaun Kerr, Ilya Utkin, Janaka Ranasinghesagara, Lei Pan, Yogesh Godwal, Roger Zemp, Robert Fedosejevs

JBO, Vol. 15, Issue 05, 056017, (September 2010) https://doi.org/10.1117/12.10.1117/1.3502661

KEYWORDS: Fiber lasers, Photoacoustic spectroscopy, Mirrors, Pulsed laser operation, Acoustics, Transducers, Photoacoustic microscopy, Laser systems engineering, Photoacoustic imaging, Ultrasonography

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Proceedings Article | 24 February 2010 Paper

High repetition rate passively Q-switched fiber and microchip lasers for optical resolution photoacoustic imaging

Wei Shi, Ilya Utkin, Janaka Ranasinghesagara, Lei Pan, Yogesh Godwal, Shaun Kerr, Roger Zemp, Robert Fedosejevs

Proceedings Volume 7564, 75640X (2010) https://doi.org/10.1117/12.842533

KEYWORDS: Fiber lasers, Photoacoustic spectroscopy, Pulsed laser operation, Acoustics, Transducers, Ultrasonography, Imaging systems, Photoacoustic microscopy, Prisms, Laser optics

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Proceedings Article | 5 August 2009 Paper

Parametric investigation of laser wakefield acceleration versus F-number of focusing optics

N. Vafaei-Najafabadi, A. Ali, J. Chakera, R. Fedosejevs, Y. Tsui

Proceedings Volume 7386, 738638 (2009) https://doi.org/10.1117/12.839825

KEYWORDS: Plasma, Pulsed laser operation, Electron beams, Nitrogen, Helium, Physics, Laser systems engineering, Femtosecond phenomena, Light sources, Laser energy

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Proceedings Article | 5 August 2009 Paper

Surface-enhanced Raman scattering detection of amino acids and peptides in a microfluidic device

A. Kandakkathara, I. Utkin, R. Fedosejevs

Proceedings Volume 7386, 73860A (2009) https://doi.org/10.1117/12.839790

KEYWORDS: Surface enhanced Raman spectroscopy, Microfluidics, Raman spectroscopy, Raman scattering, Silver, Scattering, Laser scattering, Sodium, Molecules, Micromachining

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Proceedings Article | 5 August 2009 Paper

High power Nd:YAG ceramic lasers: passive Q-switching and frequency doubling

Ruijun Lan, Robert Fedosejevs, Hong Liu, Zhengping Wang, Yaohui Lv, Yuanhua Sang, Haohai Yu, Jiyang Wang

Proceedings Volume 7386, 738634 (2009) https://doi.org/10.1117/12.839626

KEYWORDS: Nd:YAG lasers, Ceramics, Q switched lasers, Crystals, Continuous wave operation, Laser crystals, High power lasers, Ferroelectric materials, Laser development, Second-harmonic generation

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Proceedings Article | 15 January 2007 Paper

Femtosecond interaction processes near threshold: damage and ablation

R. Fedosejevs, S. Kirkwood, R. Holenstein, N. Young, Y. Tsui

Proceedings Volume 6403, 640302 (2007) https://doi.org/10.1117/12.697293

KEYWORDS: Absorption, Femtosecond phenomena, Ionization, Copper, Laser ablation, Metals, Semiconductors, Thermal modeling, Silicon, Laser damage threshold

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Proceedings Article | 8 September 2006 Paper

Sub-micron resolution three dimensional structure writing using two photon absorption process

Zahidur Chowdhury, Robert Fedosejevs

Proceedings Volume 6343, 634326 (2006) https://doi.org/10.1117/12.707943

KEYWORDS: Absorption, Photonic crystals, 3D microstructuring, Photoresist materials, Sapphire lasers, Objectives, Photonic crystal devices, Structural design, Oscillators, Glasses

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Proceedings Article | 8 September 2006 Paper

GaAs based semiconductor quantum dot saturable absorber mirror grown by molecular beam epitaxy

Z. Zhang, C. Scurtescu, M. Taschuk, Y. Tsui, R. Fedosejevs, M. Blumin, I. Saveliev, S. Yang, H. Ruda

Proceedings Volume 6343, 63432N (2006) https://doi.org/10.1117/12.707736

KEYWORDS: Gallium arsenide, Reflectivity, Semiconducting wafers, Quantum dots, Mirrors, Semiconductors, Molecular beam epitaxy, Mode locking, Fiber lasers, Indium arsenide

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Proceedings Article | 20 December 2004 Paper

Terahertz emission from surface optical rectification in n-InAs

M. Reid, R. Fedosejevs

Proceedings Volume 5577, (2004) https://doi.org/10.1117/12.567332

KEYWORDS: Terahertz radiation, Crystals, Frequency conversion, Indium arsenide, Polarization, Laser crystals, Dielectric polarization, Nonlinear crystals, Solids, Einsteinium

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Proceedings Article | 16 November 2004 Paper

Simulation of femtosecond laser ablation of silicon

Roman Holenstein, Sean Kirkwood, Robert Fedosejevs, Ying Tsui

Proceedings Volume 5579, (2004) https://doi.org/10.1117/12.567675

KEYWORDS: Laser ablation, Silicon, Chemical species, Absorption, Femtosecond phenomena, Particles, Solids, Optical simulations, Semiconductor lasers, Ionization

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Proceedings Article | 14 October 2004 Paper

Effects of film structure on photoluminescent emission properties of nanostructured Y2O3:Eu thin films

Peter Hrudey, Michael Taschuk, Ying Tsui, Robert Fedosejevs, Michael Brett

Proceedings Volume 5510, (2004) https://doi.org/10.1117/12.559957

KEYWORDS: Thin films, Solids, Nanostructures, Luminescence, Polarization, Nanostructuring, Europium, Nanolithography, Scanning electron microscopy, Spectroscopy

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Proceedings Article | 7 January 2004 Paper

Micro x-ray sources from femtosecond laser plasmas

Cristina Serbanescu, Jaime Santiago, Robert Fedosejevs

Proceedings Volume 5196, (2004) https://doi.org/10.1117/12.504864

KEYWORDS: X-rays, Copper, Plasmas, Electrons, Aluminum, Solids, Microscopes, Signal detection, Femtosecond phenomena, Optical filters

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Proceedings Article | 24 November 2003 Paper

Luminescence of nanostructured Y2O3:Eu thin films fabricated using glancing angle deposition techniques

Peter Hrudey, Mike Taschuk, Ying Tsui, Robert Fedosejevs, Jeremy Sit, Michael Brett

Proceedings Volume 5224, (2003) https://doi.org/10.1117/12.506266

KEYWORDS: Europium, Silicon films, Thin films, Silicon, Oxygen, Luminescence, Nanostructures, Sapphire, Annealing, Nanolithography

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Proceedings Article | 22 September 2003 Paper

Scaling to millijoule energies for laser-induced breakdown spectroscopy of water samples

Mike Taschuk, Igor Cravetchi, Ying Tsui, Robert Fedosejevs

Proceedings Volume 5149, (2003) https://doi.org/10.1117/12.519768

KEYWORDS: Sodium, Plasma, Laser induced breakdown spectroscopy, Pulsed laser operation, Interference (communication), Signal to noise ratio, Laser energy, Aluminum, Signal detection, Image intensifiers

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Proceedings Article | 17 February 2003 Paper

Reduction of stress cracking in micromachining of glass by preheating of samples

Michael Argument, Kenneth Chau, Ying Tsui, Robert Fedosejevs

Proceedings Volume 4833, (2003) https://doi.org/10.1117/12.473933

KEYWORDS: Glasses, Laser ablation, Femtosecond phenomena, Micromachining, Laser drilling, Pulsed laser operation, Diffusion, Laser applications, Plasma, Absorption

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Proceedings Article | 15 December 2000 Paper

Interaction of femtosecond laser pulses with metals

Ying Tsui, C. Li, Robert Fedosejevs, Clarence Capjack

Proceedings Volume 4087, (2000) https://doi.org/10.1117/12.406369

KEYWORDS: Plasma, Laser ablation, Aluminum, Absorption, Picosecond phenomena, Metals, Pulsed laser operation, Data modeling, Liquids, Femtosecond phenomena

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Proceedings Article | 15 December 2000 Paper

Laser-induced breakdown spectroscopy with low-energy laser pulses

G. Rieger, M. Taschuk, Ying Tsui, Robert Fedosejevs

Proceedings Volume 4087, (2000) https://doi.org/10.1117/12.406357

KEYWORDS: Plasma, Aluminum, Laser induced breakdown spectroscopy, Laser energy, Calibration, Pulsed laser operation, Silicon, Spectroscopy, Picosecond phenomena, Sensors

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Proceedings Article | 15 December 2000 Paper

Micromachining with femtosecond 250-nm laser pulses

C. Li, Michael Argument, Ying Tsui, Robert Fedosejevs

Proceedings Volume 4087, (2000) https://doi.org/10.1117/12.406367

KEYWORDS: Laser ablation, Micromachining, Femtosecond phenomena, Metals, Ultraviolet radiation, Aluminum, Copper, Objectives, Absorption, Pulsed laser operation

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Proceedings Article | 25 June 1999 Paper

Development of a 0.1 micron linewidth fabrication process for x-ray lithography with a laser plasma source

Romuald Bobkowski, Robert Fedosejevs, James Broughton

Proceedings Volume 3676, (1999) https://doi.org/10.1117/12.351111

KEYWORDS: X-rays, X-ray lithography, Helium, Plasma, Photomasks, Electrodes, Gold, Silicon, Optical filters, Diffusion

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Proceedings Article | 4 December 1998 Paper

Interaction of 10 fs to 15 ns KrF laser pulses with metals

Ying Tsui, Robert Fedosejevs, Clarence Capjack

Proceedings Volume 3491, (1998) https://doi.org/10.1117/12.328617

KEYWORDS: Picosecond phenomena, Reflectivity, Laser damage threshold, Liquids, Aluminum, Solids, Metals, Pulsed laser operation, Laser ablation, Absorption

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Proceedings Article | 27 May 1996 Paper

Fabrication of 0.25-um electrode width SAW filters using x-ray lithography with a laser plasma source

Romuald Bobkowski, Yunlei Li, Robert Fedosejevs, James Broughton

Proceedings Volume 2723, (1996) https://doi.org/10.1117/12.240492

KEYWORDS: X-ray lithography, X-rays, Electrodes, Photomasks, Acoustics, Optical filters, Plasma, Aluminum, Gold, Manufacturing

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Proceedings Article | 9 July 1992 Paper

keV x-ray source based on high-repetition-rate excimer-laser-produced plasmas (Poster Paper)

Robert Fedosejevs, Romuald Bobkowski, James Broughton, B. Harwood

Proceedings Volume 1671, (1992) https://doi.org/10.1117/12.136027

KEYWORDS: X-rays, Plasmas, Picosecond phenomena, Pulsed laser operation, Copper, Diodes, X-ray sources, Energy efficiency, Optical filters, Amplifiers

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Showing 5 of 25 publications

Conference Committee Involvement (1)

Medical Laser Applications and Laser-Tissue Interactions V

24 May 2011 | Munich, Germany

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