Dr. Chengao Wang Profile

Dr. Chengao Wang

at Univ of New Mexico

SPIE Involvement:

Author

Publications (10)

Proceedings Article | 5 September 2018 Paper

Tip-enhanced stimulated Raman scattering with ultra-high-aspect-ratio tips and confocal polarization Raman spectroscopy for evaluation of sidewalls in Type II superlattices FPAs

Fei-Hung Chu, G. Smolyakov, C. F. Wang, Y. Gao, C. Wang, K. Malloy, A. Ukhanov, D. Pete, M. Jaime-Vasquez, N. Baril, J. Benson, D. Tenne

Proceedings Volume 10726, 107261C (2018) https://doi.org/10.1117/12.2504541

KEYWORDS: Raman spectroscopy, Atomic force microscopy, Gallium antimonide, Near field optics, Phonons, Raman scattering, Gold, Semiconductor lasers, Polarization

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SPIE Journal Paper | 5 October 2016 Open Access

Determination of external quantum efficiency in semiconductors using pulsed power-dependent photoluminescence

Chengao Wang, Mansoor Sheik-Bahae

OE, Vol. 56, Issue 01, 011106, (October 2016) https://doi.org/10.1117/12.10.1117/1.OE.56.1.011106

KEYWORDS: External quantum efficiency, Semiconductors, Luminescence, Semiconductor lasers, Temperature metrology, Solids, Metalorganic chemical vapor deposition, Semiconducting wafers, Optical engineering, Numerical simulations

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Proceedings Article | 10 March 2015 Paper

High sensitivity background absorption measurements in semiconductors

Nathan Giannini, Junior Silva, Chengao Wang, Alexander Albrecht, Seth Melgaard, Mansoor Sheik-Bahae

Proceedings Volume 9380, 93800F (2015) https://doi.org/10.1117/12.2080087

KEYWORDS: Absorption, External quantum efficiency, Gallium arsenide, Calibration, Zinc, Semiconductors, Interfaces, Indium gallium phosphide, Absorbance, Neodymium

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Proceedings Article | 11 March 2013 Paper

Accurate measurement of external quantum efficiency in semiconductors

Chengao Wang, Mansoor Sheik-Bahae, Jeffrey Cederberg, Daniel Bender

Proceedings Volume 8638, 86380H (2013) https://doi.org/10.1117/12.2007519

KEYWORDS: External quantum efficiency, Luminescence, Semiconductors, Semiconductor lasers, Gallium arsenide, Heterojunctions, Absorption, Internal quantum efficiency, Temperature metrology, Quantum efficiency

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Proceedings Article | 9 February 2011 Paper

GaAs/GaInP double heterostructure characterization for laser cooling of semiconductors

Chengao Wang, Chia-Yeh Li, Michael Hasselbeck, Thomas Rotter, Kevin Malloy, Mansoor Sheik-Bahae, Jerry Olson

Proceedings Volume 7951, 79510D (2011) https://doi.org/10.1117/12.878979

KEYWORDS: External quantum efficiency, Luminescence, Semiconductor lasers, Semiconductors, Temperature metrology, Gallium arsenide, Heterojunctions, Absorption, Internal quantum efficiency, Calorimetry

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Proceedings Article | 18 February 2010 Paper

Characterization of external quantum efficiency and absorption efficiency in GaAs/ InGaP double heterostructures for laser cooling applications

Chengao Wang, Michael Hasselbeck, Chia-Yeh Li, Mansoor Sheik-Bahae

Proceedings Volume 7614, 76140B (2010) https://doi.org/10.1117/12.845053

KEYWORDS: External quantum efficiency, Absorption, Luminescence, Semiconductors, Semiconductor lasers, Temperature metrology, Quantum efficiency, Heterojunctions, Gallium arsenide, Metalorganic chemical vapor deposition

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Proceedings Article | 18 February 2010 Paper

Determination of nonradiative recombination in high quantum efficiency GaAs/InGaP heterostructures

Chia-Yeh Li, Chengao Wang, Michael Hasselbeck, Mansoor Sheik-Bahae, Kevin Malloy

Proceedings Volume 7614, 76140E (2010) https://doi.org/10.1117/12.845054

KEYWORDS: Luminescence, Heterojunctions, Semiconductor lasers, External quantum efficiency, Metalorganic chemical vapor deposition, Quantum efficiency, Semiconductors, Neodymium, Lithium, Photomultipliers

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Proceedings Article | 15 March 2007 Paper

Heterostructure design optimization for laser cooling of GaAs

B. Imangholi, C. Wang, E. Soto, M. Sheik-Bahae, A. Stintz, K. Malloy, N. Nuntawong, R. Epstein

Proceedings Volume 6461, 64610G (2007) https://doi.org/10.1117/12.709847

KEYWORDS: Gallium arsenide, Heterojunctions, Luminescence, External quantum efficiency, Absorption, Electrons, Semiconductor lasers, Indium gallium phosphide, Photons, Diffusion

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Proceedings Article | 14 February 2007 Paper

Analysis of a third-order optical parametric oscillator in TiO2

Chengao Wang, Mansoor Sheik-Bahae

Proceedings Volume 6455, 64550O (2007) https://doi.org/10.1117/12.709779

KEYWORDS: Optical parametric oscillators, Crystals, Bismuth, Picosecond phenomena, Oscillators, Refractive index, Nonlinear crystals, Four wave mixing, Fiber optics, Titanium dioxide

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Proceedings Article | 28 February 2006 Paper

Differential luminescence thermometry in semiconductor laser cooling

Babak Imangholi, Michael Hasselbeck, Daniel Bender, Chengao Wang, Mansoor Sheik-Bahae, Richard Epstein, Sarah Kurtz

Proceedings Volume 6115, 61151C (2006) https://doi.org/10.1117/12.646346

KEYWORDS: Luminescence, Gallium arsenide, External quantum efficiency, Temperature metrology, Semiconductors, Heterojunctions, Semiconductor lasers, Spectroscopy, Thermometry, Solids

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Showing 5 of 10 publications

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