Dr. Sangil Ahn Profile

Dr. Sangil Ahn

Light Sources Engineer

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Author

Publications (3)

Proceedings Article | 15 May 2012 Paper

Facet reflectivity reduction of quantum cascade lasers by tilted facets

S. Ahn, C. Schwarzer, S. Kalchmair, R. Gansch, D. Ristanic, T. Zederbauer, P. Reiniger, H. Detz, A. Andrews, W. Schrenk, G. Strasser

Proceedings Volume 8432, 84320L (2012) https://doi.org/10.1117/12.922417

KEYWORDS: Quantum cascade lasers, Reflectivity, Polarization, Internal quantum efficiency, Semiconductor lasers, Interfaces, Refractive index, Ion beams, Heterojunctions, Quantum efficiency

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Proceedings Article | 25 April 2012 Paper

Optimized photonic crystal design for quantum well infrared photodetectors

P. Reininger, S. Kalchmair, R. Gansch, A. Andrews, H. Detz, T. Zederbauer, S. Ahn, W. Schrenk, G. Strasser

Proceedings Volume 8425, 84250A (2012) https://doi.org/10.1117/12.923045

KEYWORDS: Quantum well infrared photodetectors, Absorption, Photonic crystals, Optical instrument design, Finite-difference time-domain method, Scanning electron microscopy, Gallium arsenide, Resonators, Photodetectors, Refractive index

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Proceedings Article | 12 February 2010 Paper

Ring resonator-based surface emitting quantum cascade lasers

E. Mujagic, C. Schwarzer, M. Nobile, H. Detz, S. Ahn, P. Klang, A. Andrews, W. Schrenk, C. Deutsch, K. Unterrainer, J. Chen, C. Gmachl, G. Strasser

Proceedings Volume 7616, 76161Q (2010) https://doi.org/10.1117/12.842703

KEYWORDS: Quantum cascade lasers, Terahertz radiation, Resonators, Laser damage threshold, Fabry–Perot interferometers, Continuous wave operation, Waveguides, Laser resonators, Beam shaping, Measurement devices

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