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Interband Cascade Lasers with Sidewall Corrugations for Enhanced Brightness
Author(s): M. Kim; C.S. Kim; C. L. Canedy; W. W. Bewley; C. D. Merritt; I. Vurgaftman; J. R. Meyer
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Paper Abstract

We have experimentally investigated the effects of sidewall corrugations on the beam quality and brightness of narrow-ridge interband cascade lasers (ICLs) emitting at λ ≈ 3.3 μm. We find that at this wavelength a corrugation period of 10 µm provides greater suppression of higher-order lateral modes than a shorter period of 2-4 µm. While the power and efficiency decrease modestly for the longer corrugation period, there is a net increase of the brightness defined as the output power divided by the beam quality factor M2 . However, the brightness degrades when the corrugation amplitude is increased from 2 µm to 3.5 µm, since lower output power offsets a relatively small improvement of the beam quality

Paper Details

Date Published: 8 March 2019
PDF: 9 pages
Proc. SPIE 10939, Novel In-Plane Semiconductor Lasers XVIII, 109390X (8 March 2019); doi: 10.1117/12.2508703
Show Author Affiliations
M. Kim, KeyW Corp. (United States)
C.S. Kim, U.S. Naval Research Lab. (United States)
C. L. Canedy, U.S. Naval Research Lab. (United States)
W. W. Bewley, U.S. Naval Research Lab. (United States)
C. D. Merritt, U.S. Naval Research Lab. (United States)
I. Vurgaftman, U.S. Naval Research Lab. (United States)
J. R. Meyer, U.S. Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 10939:
Novel In-Plane Semiconductor Lasers XVIII
Alexey A. Belyanin; Peter M. Smowton, Editor(s)

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