Prof. Watheq Al-Basheer Profile

Prof. Watheq Al-Basheer

Associate Professor of Physics at King Fahd Univ. of Petroleum & Minerals

SPIE Involvement:

Author

Publications (24)

SPIE Journal Paper | 5 September 2024

External cavity diode laser in Littrow configuration with narrowband emission at 448 nm for NO₂ gas detection

Khaled Gasmi, Abdulaziz Aljalal, Watheq Al-Basheer

OE, Vol. 63, Issue 09, 096102, (September 2024) https://doi.org/10.1117/12.10.1117/1.OE.63.9.096102

KEYWORDS: Semiconductor lasers, Diffraction gratings, Emission spectrum, Optical gratings, Emission wavelengths, Holography, Wavelength tuning, Molecules, Optical engineering, Light absorption

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Proceedings Article | 20 June 2024 Poster + Paper

Littrow configuration tunable external cavity diode laser with narrowband emission at 448 nm

Khaled Gasmi, Abdulaziz Aljalal, Watheq Al-Basheer

Proceedings Volume 13002, 130020P (2024) https://doi.org/10.1117/12.3021900

KEYWORDS: Semiconductor lasers, Fabry Perot interferometers, Emission spectrum, Holography, Emission wavelengths, Wavelength tuning, Molecules, CCD cameras, Monochromators

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Proceedings Article | 5 June 2023 Poster + Paper

A new ultrasensitive nonlinear magneto-optical Voigt device operating in the blue spectral region

Watheq Al-Basheer

Proceedings Volume 12569, 125690D (2023) https://doi.org/10.1117/12.2665248

KEYWORDS: Polarized light, Magnetism, Magneto-optics, Polarizers, Light emitting diodes, Polarization, Silicon, Photodiodes, Blue light emitting diodes, Signal detection

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Proceedings Article | 31 May 2023 Poster + Paper

Optical sensor for NO2 gas detection using an external cavity diode laser

Khaled Gasmi, Abdulaziz AlJalal, Watheq Al-Basheer

Proceedings Volume 12572, 1257214 (2023) https://doi.org/10.1117/12.2665254

KEYWORDS: Semiconductor lasers, Emission wavelengths, Diffraction gratings, Nitrogen dioxide, CCD cameras, Optical sensors, Optical gratings, Emission spectrum, Optical gas detection

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Proceedings Article | 26 May 2022 Poster + Paper

One- and two-photon absorption circular dichroism of optically active chiral systems

Watheq Al-Basheer

Proceedings Volume 12143, 121430G (2022) https://doi.org/10.1117/12.2621023

KEYWORDS: Absorption, Molecules, Circular dichroism spectroscopy, Spectroscopy, Active optics, Optical activity, Dichroic materials, Ultraviolet radiation, Ionization, Near ultraviolet

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Proceedings Article | 18 April 2021 Poster + Presentation + Paper

Nonlinear photoionization of supersonically expanded molecular pulses of iodomethane (CH3I)

Watheq Al-Basheer

Proceedings Volume 11770, 117701I (2021) https://doi.org/10.1117/12.2589033

KEYWORDS: Ultraviolet radiation, Spectroscopy, Sensors, Optical parametric oscillators, Molecules, Molecular lasers, Microchannel plates, Ionization, Gases, Argon

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Proceedings Article | 18 April 2021 Presentation + Paper

Pore size assessment of nanoporous alumina using absorption of laser light

A. Aljalal, A. Al-Saudi, K. Gasmi, W. Al-Basheer, S. Qari

Proceedings Volume 11772, 1177213 (2021) https://doi.org/10.1117/12.2589272

KEYWORDS: Absorption, Molecules, Oxygen, Semiconductor lasers, Scattering media, Mercury, Gases, Absorption spectroscopy

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Proceedings Article | 21 August 2020 Poster + Presentation + Paper

Utilizing wall collision broadening of O2 absorption line for pore size assessment

Ahmed Al-Saudi, Abdulaziz Aljalal, Watheq Al-Basheer, Khaled Gasmi, Samer Qari

Proceedings Volume 11483, 114830Q (2020) https://doi.org/10.1117/12.2565900

KEYWORDS: Oxygen, Absorption, Molecules, Absorbance, Scanning electron microscopy, Vertical cavity surface emitting lasers, Gases, Signal detection, Sensors

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Proceedings Article | 1 April 2020 Presentation + Paper

Nonlinear optical properties of mirror-image configurations of chiral limonene molecule

Watheq Al-Basheer, Said Azar

Proceedings Volume 11358, 113581Q (2020) https://doi.org/10.1117/12.2552044

KEYWORDS: Molecules, Absorption, Infrared spectroscopy, Spectroscopy, Mid-IR, Dichroic materials, Infrared radiation, Molecular spectroscopy, Circular dichroism spectroscopy, Minerals

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Proceedings Article | 1 April 2020 Presentation + Paper

Highly-resolved (2+1) nonlinear resonantly-enhanced multiphoton ionization of supersonically jet-cooled H2O and D2O molecules

Watheq Al-Basheer

Proceedings Volume 11358, 113581S (2020) https://doi.org/10.1117/12.2553314

KEYWORDS: Molecules, Ionization, Ions, Signal processing, Molecular lasers, Molecular spectroscopy, Helium, Argon, Gases, Molecular beams

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Proceedings Article | 1 April 2020 Presentation + Paper

Blue external-cavity diode laser for NO2 gas detection

Khaled Gasmi, Abdulaziz Aljalal, Watheq Al-Basheer

Proceedings Volume 11356, 1135616 (2020) https://doi.org/10.1117/12.2554539

KEYWORDS: Semiconductor lasers, Diffraction gratings, Fabry–Perot interferometers, Wavelength tuning, Nitrogen dioxide, Absorption, Spectroscopy, Laser resonators

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Proceedings Article | 30 April 2019 Paper

Laser-induced shockwave crystallization of nitrates

Watheq Al-Basheer, Yusron Darojat, Khaled Gasmi, Abdulaziz Aljalal

Proceedings Volume 11026, 110260X (2019) https://doi.org/10.1117/12.2518722

KEYWORDS: Crystals, Laser crystals, Laser irradiation, Scanning electron microscopy, Nd:YAG lasers, Sodium, Potassium, Calcium, Minerals, Pulsed laser operation

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Proceedings Article | 30 April 2019 Paper

Linear and nonlinear chiro-optical properties of carvone molecule mirror-image configurations

Watheq Al-Basheer

Proceedings Volume 11026, 110260Z (2019) https://doi.org/10.1117/12.2519764

KEYWORDS: Molecules, Absorption, Dichroic materials, Optical activity, Mirrors, Nonlinear optics, Circular dichroism spectroscopy, Spectroscopy, Infrared spectroscopy, Molecular spectroscopy

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Proceedings Article | 26 April 2019 Paper

A newly developed ultrasensitive Faraday optical rotation device

Watheq Al-Basheer, Sohaib AbdElazem

Proceedings Volume 11032, 110320X (2019) https://doi.org/10.1117/12.2519071

KEYWORDS: Magnetism, Polarizers, Light emitting diodes, Polarization, Quartz, Sensors, Magneto-optics, Refractive index, Signal detection, Dielectric polarization

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Proceedings Article | 11 April 2019 Paper

Estimation of pore sizes using laser absorption in molecular oxygen gas enclosed in mesoporous alumina

Ahmed Al-Saudi, Watheq Al-Basheer, Abdulaziz Aljalal, Khaled Gasmi, Samer Qari

Proceedings Volume 11028, 1102818 (2019) https://doi.org/10.1117/12.2519604

KEYWORDS: Absorption, Oxygen, Semiconductor lasers, Molecular lasers, Sensors, Molecules, Vertical cavity surface emitting lasers, Signal detection, Spectroscopy, Scattering media

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Proceedings Article | 24 May 2018 Paper

Imaging of supersonically expanded and pulsed molecular beams by nonlinear photoionization processes

Watheq Al-Basheer

Proceedings Volume 10677, 106773L (2018) https://doi.org/10.1117/12.2306512

KEYWORDS: Molecular lasers, Ionization, Ions, Molecular beams, Photons, Molecular spectroscopy, Molecules, Helium, Spectroscopy, Iodine

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Proceedings Article | 9 May 2018 Paper

Temperature dependence of external differential quantum efficiency of GaN-based blue laser diode

Watheq Al-Basheer, Abdulaziz Aljalal, Khaled Gasmi, Taofeek Adigun

Proceedings Volume 10682, 106821O (2018) https://doi.org/10.1117/12.2306315

KEYWORDS: Semiconductor lasers, Quantum efficiency, External quantum efficiency, Temperature metrology, Photons, Absorption, Laser damage threshold, CCD cameras, Monochromators, Laser stabilization

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Proceedings Article | 16 May 2017 Paper

Detection of trace amount of NO2 gas using tunable blue laser diode

Abdulaziz Aljalal, Sameh Altanany, Khaled Gasmi, Watheq Al-Basheer, Morad Hamad

Proceedings Volume 10231, 102311E (2017) https://doi.org/10.1117/12.2264513

KEYWORDS: NOx, Semiconductor lasers, Laser spectroscopy, Spectroscopy, Absorption, Tunable diode lasers, Absorption spectroscopy, Chemical fiber sensors, Biosensors, Optical sensing, Transmittance, Sensors, Molecules, Light sources, Signal detection

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Proceedings Article | 16 May 2017 Paper

High-resolution investigation of longitudinal modes of a GaN-based blue laser diode

Watheq Al-Basheer, Abdulaziz Aljalal, Khaled Gasmi, Taofeek Adigun

Proceedings Volume 10231, 102312V (2017) https://doi.org/10.1117/12.2264383

KEYWORDS: Semiconductor lasers, Photodetectors, Gallium nitride, Spectroscopy, Modes of laser operation, Laser applications, Laser damage threshold, Temperature metrology, Photon counting, Sensors, Monochromators, CCD cameras, Minerals, Fabry–Perot interferometers, Beam splitters, Diffraction gratings

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Proceedings Article | 5 May 2015 Paper

Evolution of blue laser diode spectral lines with applied current in the range 446-448 nm

Watheq Al-Basheer, Abdulaziz Aljalal, Khaled Gasmi

Proceedings Volume 9506, 950629 (2015) https://doi.org/10.1117/12.2179136

KEYWORDS: Semiconductor lasers, Monochromators, CCD cameras, Laser resonators, Spectral resolution, Gallium nitride, Minerals, Fabry–Perot interferometers, Semiconductors, Data acquisition

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Proceedings Article | 5 May 2015 Paper

Investigating temperature effects on the spectral lines of blue laser diodes for monitoring NO2 gas pollution

Khaled Gasmi, Watheq Al-Basheer, Abdulaziz Aljalal

Proceedings Volume 9506, 950628 (2015) https://doi.org/10.1117/12.2179135

KEYWORDS: Semiconductor lasers, Diodes, Monochromators, NOx, Pollution, Temperature metrology, Fabry–Perot interferometers, CCD cameras, Minerals, Gallium nitride

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Proceedings Article | 5 May 2015 Paper

Active differential optical absorption spectroscopy for NO2 gas pollution using blue light emitting diodes

Abdulaziz Aljalal, Khaled Gasmi, Watheq Al-Basheer

Proceedings Volume 9506, 95062A (2015) https://doi.org/10.1117/12.2179139

KEYWORDS: NOx, Spectroscopy, Blue light emitting diodes, Light emitting diodes, Light sources, Absorption, Active optics, Absorption spectroscopy, Molecules, Pollution

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