Research Areas
Physics of intersubband transitions and carrier transport through multi-layered semiconductor structures, low dimensional semiconductor devices, monolithic sensors, infrared spectroscopy.
Publications
A. Lyakh, R. Barron-Jimenez, I. Dunayevskiy, R. Go, and C. Kumar N. Patel, “External Cavity quantum cascade lasers with ultra rapid acoustooptic tuning” Applied Physics Letters 106, 151101, March 2015
A. Lyakh, R. Maulini, A. Tsekoun, R. Go, and C. K. N. Patel, “Continuous wave operation of buried heterostructure 4.6µm quantum cascade laser Y-junctions and tree arrays”, Optics Express 22, 1203, January 2014
A. Lyakh, R. Maulini, A. Tsekoun, R. Go, and C. K. N. Patel, “Multiwatt long wavelength quantum cascade lasers based on high strain composition with 70% injection efficiency”, Optics Express 22, 24272, October 2012
A. Lyakh, R. Maulini, A. Tsekoun, R. Go, and C. K. N. Patel, “Tapered 4.7μm quantum cascade lasers with highly strained active region composition delivering over 4.5 watts of continuous wave optical power”, Optics Express 20, 4382, February 2012
R. Maulini, A. Lyakh, A. Tsekoun, R. Go, and C. K. N. Patel, “λ~7.1μm Quantum Cascade Lasers with 19% wall-plug efficiency at room temperature”, Optics Express 19, 17203, August 2011
A. Lyakh, R. Maulini, A. Tsekoun, and C. K. N. Patel, “Progress in high-performance quantum cascade lasers”, Optical Engineering, vol. 49, p. 111105, November 2010
A. Lyakh, R. Maulini, A. Tsekoun, R. Go, S. Von Der Porten, C. Pflugl, L. Diehl, F. Capasso, and C. K. N. Patel, “High-performance continuous-wave room temperature 4.0-μm quantum cascade lasers with single-facet optical emission exceeding 2 W”, Proceedings of the National Academy of Sciences, vol. 107, p. 18799, November 2010
A. Lyakh, R. Maulini, A. Tsekoun, R. Go, C. Pflügl, L. Diehl, Q. Wang, F. Capasso, and C. K. N. Patel, “3 W continuous-wave room temperature single-facet emission from quantum cascade lasers based on non-resonant extraction design approach”, Applied Physics Letters vol. 95, p. 141113, October 2009
R. Maulini, I. Dunayevskiy, A. Lyakh, A. Tsekoun, L. Diehl, C. Pllugl, Federico Capasso, “Widely tunable high-power external cavity quantum cascade laser operating in continuous-wave at room temperature”, Electronic Letters, vol. 45, p. 107, January 2009
A. Lyakh, R. Maulini, A. Tsekoun, R. Go, and C. K. N. Patel, “Intersubband absorption of quantum cascade laser structures and its applications to laser modulation”, Applied Physics Letters vol. 92, p. 211108, May 2008
A. Lyakh, P. Zory, M. D’Souza, D. Botez, D. Bour, “Substrate-emitting, distributed feedback quantum cascade lasers”, Applied Physics Letters, Vol. 91, p. 181116, October 2007
Oversees
Oversees the following graduate students:
Davis Robinson