Dr. Xiaojun Wang Profile

Dr. Xiaojun Wang

Director of Engineering at AdTech Photonics Inc

SPIE Involvement:

Author

Publications (16)

Proceedings Article | 15 March 2023 Paper

High power RT quasi-CW 4.6um quantum cascade laser (QCL) arrays

X. J. Wang, C. Luu, H. Quach, R. May, M. Matsuki, L. Chen, T. Massimino, R. Ceballos

Proceedings Volume 12440, 124400P (2023) https://doi.org/10.1117/12.2650844

KEYWORDS: Quantum cascade lasers, Pulsed laser operation, Continuous wave operation, Heatsinks, Copper, Coating, Fabrication, 3D modeling, Visibility, Semiconducting wafers

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SPIE Journal Paper | 19 August 2017

High-power spiral cavity quantum cascade superluminescent emitters with a passive loop back facet

Mei Zheng, Yezhezi Zhang, Peter Liu, Xiaojun Wang, Jen-Yu Fan, Mariano Troccoli, Claire Gmachl

OE, Vol. 57, Issue 01, 011001, (August 2017) https://doi.org/10.1117/12.10.1117/1.OE.57.1.011001

KEYWORDS: Reflectivity, Quantum cascade lasers, Laser damage threshold, Optical coherence tomography, Mid-IR, Signal detection, Antireflective coatings, Imaging systems, Metals

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Proceedings Article | 22 May 2015 Paper

High power MWIR quantum cascade lasers and their use in intra-cavity THz room temperature generation

Mariano Troccoli, Xiaojun Wang, Jenyu Fan, Aiting Jiang, Karun Vijayraghavan, Seungyong Jung, Yifan Jiang, Mikhail Belkin

Proceedings Volume 9467, 94672G (2015) https://doi.org/10.1117/12.2178098

KEYWORDS: Terahertz radiation, Mid-IR, Quantum cascade lasers, High power lasers, Long wavelength infrared, Metalorganic chemical vapor deposition, Waveguides, Semiconductors, Semiconductor lasers, Continuous wave operation

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Proceedings Article | 4 March 2013 Paper

Single-mode quantum cascade lasers with asymmetric Mach-Zehnder interferometer type Fabry-Perot cavity

Peter Liu, Xiaojun Wang, Claire Gmachl

Proceedings Volume 8640, 86401E (2013) https://doi.org/10.1117/12.2012094

KEYWORDS: Quantum cascade lasers, Interferometers, Laser resonators, Waveguides, Laser development, Continuous wave operation, Fabry–Perot interferometers, Laser applications, Pulsed laser operation, Mach-Zehnder interferometers

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Proceedings Article | 4 March 2013 Paper

Transverse mode control in quantum cascade lasers via lossy lateral constrictions

Pierre Bouzi, Peter Liu, Nyan Aung, Xiaojun Wang, Claire Gmachl, Mariano Troccoli, Jen-Yu Fan

Proceedings Volume 8640, 86401V (2013) https://doi.org/10.1117/12.2009408

KEYWORDS: Quantum cascade lasers, Etching, Platinum, Metals, Refractive index, Semiconductor lasers, Radio propagation, Beam steering, Optical simulations, Scanning electron microscopy

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Proceedings Article | 9 February 2012 Paper

Long wavelength quantum cascade lasers for applications in the second atmospheric window at wavelength of 9-11 microns

M. Troccoli, G. Tsvid, C. Gmachl, J. Fan, X. Wang

Proceedings Volume 8277, 82771S (2012) https://doi.org/10.1117/12.909556

KEYWORDS: Quantum cascade lasers, Waveguides, Mid-IR, Applied physics, Scattering, Picosecond phenomena, Long wavelength infrared, Pulsed laser operation, Continuous wave operation

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Proceedings Article | 21 February 2011 Paper

Carrier dynamics investigation in quantum cascade lasers using Mid-IR ultrafast pulses

Sheng Liu, Peter Liu, Claire Gmachl, Elaine Lalanne, Xiaojun Wang, Anthony Johnson

Proceedings Volume 7937, 79370Q (2011) https://doi.org/10.1117/12.875787

KEYWORDS: Quantum cascade lasers, Electrons, Mid-IR, Scattering, Picosecond phenomena, Femtosecond phenomena, Ultrafast phenomena, Optical filtering, Quantum wells, Superlattices

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Proceedings Article | 17 February 2011 Paper

High performance quantum cascade lasers with broadband gain spectra

Xiaojun Wang, Tracy Tsai, William Charles, Jen-Yu Fan, Claire Gmachl, Yu Yao, Gerard Wysocki, Jianxin Chen

Proceedings Volume 7953, 795317 (2011) https://doi.org/10.1117/12.873854

KEYWORDS: Quantum cascade lasers, Electroluminescence, Pulsed laser operation, Laser damage threshold, Laser development, Laser scattering, Electron transport, Tunable lasers, Indium gallium arsenide, Cladding

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Proceedings Article | 17 February 2011 Paper

InGaAs/AlInAs quantum cascade laser sources based on intra-cavity second harmonic generation emitting in 2.6-3.6 micron range

L. W. Cheng, X. Wang, M. Jang, W. Charles, J. X. Chen, M. Belkin, F.-S. Choa, C. Grasse, A. Vizbaras, C. Gmachl, M.-C. Amann, M. Anders, R. Adams, M. Troccoli

Proceedings Volume 7953, 795315 (2011) https://doi.org/10.1117/12.879232

KEYWORDS: Second-harmonic generation, Quantum cascade lasers, Heterojunctions, Nonlinear optics, Harmonic generation, Continuous wave operation, Waveguides, Semiconductor lasers, Solids, Laser damage threshold

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SPIE Journal Paper | 1 November 2010

Quantum cascade lasers: high-power emission and single-mode operation in the long-wave infrared (>6 µm)

Mariano Troccoli, Xiaojun Wang, Jenyu Fan

OE, Vol. 49, Issue 11, 111106, (November 2010) https://doi.org/10.1117/12.10.1117/1.3498778

KEYWORDS: Quantum cascade lasers, Waveguides, Long wavelength infrared, High power lasers, Mid-IR, Continuous wave operation, Indium gallium arsenide, Optical engineering, Fluctuations and noise, Pulsed laser operation

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Proceedings Article | 23 January 2010 Paper

Quantum cascade laser absorption spectroscopy of UF6 at 7.74 um for analytical uranium enrichment measurements

Mary Fong, Frank Tittel, Claire Gmachl, Rafal Lewicki, Gerard Wysocki, Yu Yao, Xiaojun Wang, Mariano Troccoli, Tracy Tsai, Fatima Toor, Anatoliy Kosterev

Proceedings Volume 7608, 76080E (2010) https://doi.org/10.1117/12.841939

KEYWORDS: Quantum cascade lasers, Uranium, Absorption, Molecules, Absorption spectroscopy, Quartz, Sensors, Mid-IR, Spectroscopy, Laser spectroscopy

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Proceedings Article | 12 February 2009 Paper

Active control of propagating waves on plasmonic surfaces

E. Shaner, X. Wang, S. Howard, F.-S. Choa, T. Ribaudo, C. Gmachl, D. Wasserman

Proceedings Volume 7221, 72210P (2009) https://doi.org/10.1117/12.809614

KEYWORDS: Mid-IR, Plasmonics, Light wave propagation, Quantum cascade lasers, Metals, Wave propagation, FT-IR spectroscopy, Gallium arsenide, Interfaces

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Proceedings Article | 8 February 2007 Paper

MOCVD growth and regrowth of quantum cascade lasers

Xiaojun Wang, Xiaoming Ji, Jenyu Fan, Fow-Sen Choa, Liwei Cheng, Zhijun Liu, Scott Howard, Daniel Wasserman, Claire Gmachl, Jacob Khurgin

Proceedings Volume 6485, 64850N (2007) https://doi.org/10.1117/12.714269

KEYWORDS: Quantum cascade lasers, Metalorganic chemical vapor deposition, Terahertz radiation, Oxides, Waveguides, Molybdenum, Mid-IR, Cladding, Etching, Interfaces

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Proceedings Article | 15 December 2000 Paper

Adiabatic mode expansion laser diodes fabricated by selective area growth

Qiangsheng Xiang, Jem Fan, Fow-Sen Choa, Jun Zhang, Xiaojun Wang

Proceedings Volume 4087, (2000) https://doi.org/10.1117/12.406316

KEYWORDS: Oxides, Semiconductor lasers, Waveguides, Single mode fibers, Tolerancing, Packaging, Optical alignment, Semiconductors, Telecommunications, Fiber couplers

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Proceedings Article | 15 December 2000 Paper

Selective-area-growth materials for widely tunable semiconductor lasers

Fow-Sen Choa, Xiaojun Wang, Jie Lin, Jun Zhang, Gary Carter, Xiangjun Zhao

Proceedings Volume 4087, (2000) https://doi.org/10.1117/12.406317

KEYWORDS: Oxides, Semiconductor lasers, Tunable lasers, Diodes, Wavelength division multiplexing, Quantum wells, Broadband telecommunications, Metalorganic chemical vapor deposition, Multiplexing, Electroluminescence

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Proceedings Article | 15 December 2000 Paper

Effect of background acceptor impurity on the radiative transition in low-dimensional InGaAs material

Xiaojun Wang, Fow-Sen Choa

Proceedings Volume 4087, (2000) https://doi.org/10.1117/12.406315

KEYWORDS: Quantum wells, Excitons, Indium gallium arsenide, Oscillators, Gallium arsenide, Metalorganic chemical vapor deposition, Optical amplifiers, Temperature metrology, Carbon, Laser sintering

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Showing 5 of 16 publications

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