Processing Interband Cascade Laser for High Temperature CW Operation

Report No. ARL-TN-233
Authors: Richard L. Tober, Carlos Monroy, Kimberly Olver, and John D. Bruno
Date/Pages: November 2004; 12 pages
Abstract: A narrow ridge-waveguide mid-IR interband cascade laser based on Type-II InAs/GaInSb heterostructures processed with a thick gold heat spreading layer operated CW at temperatures ranging from 80 K to 214.4 K. Its differential quantum efficiency was 547% at 80 K and dropped slowly to 239% at 200 K, commensurate with a T1 of 160.2. The device had a characteristic temperature, T0, of 40.2 K and showed signs of significant heating at temperatures above 200 K.
Distribution: Approved for public release
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Last Update / Reviewed: November 1, 2004