High-power CW mid-IR quantum cascade lasers

Jerry R. Meyer; William W. Bewley; James R. Lindle; Igor Vurgaftman; Allan J. Evans; Jae Su Yu; Steven Slivken; Manijeh Razeghi

doi:10.1117/12.597072

25 March 2005 High-power CW mid-IR quantum cascade lasers

Jerry R. Meyer, William W. Bewley, James R. Lindle, Igor Vurgaftman, Allan J. Evans, Jae Su Yu, Steven Slivken, Manijeh Razeghi

Author Affiliations +

Proceedings Volume 5732, Quantum Sensing and Nanophotonic Devices II; (2005) https://doi.org/10.1117/12.597072
Event: Integrated Optoelectronic Devices 2005, 2005, San Jose, California, United States

Abstract

We report the cw operation of quantum cascade lasers that do not require cryogenic cooling and emit at λ = 4.7-6.2 μm. At 200 K, more than 1 W of output power is obtained from 12-μm-wide stripes, with a wall-plug efficiency (η_wall) near 10%. Room-temperature cw operation has also been demonstrated, with a maximum output power of 640 mW (η_wall = 4.5%) at 6 μm and 260 mW (η_wall = 2.3%) at 4.8 μm. Far-field characterization indicates that whereas the beam quality remains close to the diffraction limit in all of the tested lasers, in the devices emitting at 6.2 μm the beam tends to steer by as much as 5-10° degrees in either direction with varying temperature and pump current.

Citation Download Citation

Jerry R. Meyer, William W. Bewley, James R. Lindle, Igor Vurgaftman, Allan J. Evans, Jae Su Yu, Steven Slivken, and Manijeh Razeghi "High-power CW mid-IR quantum cascade lasers", Proc. SPIE 5732, Quantum Sensing and Nanophotonic Devices II, (25 March 2005); https://doi.org/10.1117/12.597072

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