TY - GEN
T1 - Continuous-wave room-temperature operation of λ ∼ 3 μm quantum cascade laser
AU - Bandyopadhyay, N.
AU - Bai, Y.
AU - Tsao, S.
AU - Nida, S.
AU - Slivken, Steven Boyd
AU - Razeghi, Manijeh
PY - 2013/4/9
Y1 - 2013/4/9
N2 - Quantum Cascade Lasers (QCLs), operating in continuous wave (cw) at room temperature (rt) in 3-3.5μm spectral range, which overlaps the spectral fingerprint region of many hydrocarbons, is essential in spectroscopic trace gas detection, environment monitoring, and pollution control. A 3μm QCL, operating in cw at rt is demonstrated. This initial result makes it possible, for the most popular material system (AlInAs/GaInAs on InP) used in QCLs in mid-infrared and long-infrared, to cover the entire spectral range of mid-infrared atmospheric window (3-5μm). In 0.79 Ga 0.21 As/In 0.11 Al 0.89 As strain balanced superlattice, which has a large conduction band offset, was grown. The strain was balanced with composite barriers (In0.11Al0.89As /In0.4Al0.6As) in the injector region, to eliminate the need of extremely high compressively strained GaInAs, whose pseudomorphic growth is very difficult.
AB - Quantum Cascade Lasers (QCLs), operating in continuous wave (cw) at room temperature (rt) in 3-3.5μm spectral range, which overlaps the spectral fingerprint region of many hydrocarbons, is essential in spectroscopic trace gas detection, environment monitoring, and pollution control. A 3μm QCL, operating in cw at rt is demonstrated. This initial result makes it possible, for the most popular material system (AlInAs/GaInAs on InP) used in QCLs in mid-infrared and long-infrared, to cover the entire spectral range of mid-infrared atmospheric window (3-5μm). In 0.79 Ga 0.21 As/In 0.11 Al 0.89 As strain balanced superlattice, which has a large conduction band offset, was grown. The strain was balanced with composite barriers (In0.11Al0.89As /In0.4Al0.6As) in the injector region, to eliminate the need of extremely high compressively strained GaInAs, whose pseudomorphic growth is very difficult.
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U2 - 10.1117/12.2019105
DO - 10.1117/12.2019105
M3 - Conference contribution
AN - SCOPUS:84875777580
SN - 9780819494009
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Quantum Sensing and Nanophotonic Devices X
T2 - Quantum Sensing and Nanophotonic Devices X
Y2 - 3 February 2013 through 7 February 2013
ER -