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Proceedings Paper

Interband cascade distributed-feedback lasers
Author(s): J. R. Meyer; C. S. Kim; M. Kim; C. L. Canedy; W. W. Bewley; J. R. Lindle; I. Vurgaftman
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Paper Abstract

Significant recent advances in the high-temperature, high-power performance of type-II antimonide interband cascade lasers (ICLs) operating in the mid-infrared are reported. A 5-stage ICL with a 12-&mgr;m ridge width and Au electroplating for improved epitaxial-side-up heat sinking operates cw to a maximum temperature of 257 K, where the emission wavelength is 3.7 &mgr;m. A similar device with a ridge width of 22 &mgr;m emits > 260 mW per facet for cw operation at 80 K (λ = 3.4 &mgr;m) and 100 mW at 200 K (λ = 3.6 &mgr;m). Beam qualities for the narrowest ridges approach the diffraction limit. A single-mode output power of 41 mW has been obtained at T = 120 K and λ ≈ 3.44 μm from a 13-&mgr;m-wide ICL patterned with a Ge distributed-feedback grating. The side mode suppression ratio at the maximum power is 23 dB, and the linewidth of 0.1 nm is instrument-limited. An alternate contacting geometry yielded robust single-mode output over a broad range of currents and temperatures, and current tuning of the wavelength by up to 17 nm.

Paper Details

Date Published: 2 February 2007
PDF: 9 pages
Proc. SPIE 6479, Quantum Sensing and Nanophotonic Devices IV, 647916 (2 February 2007); doi: 10.1117/12.693445
Show Author Affiliations
J. R. Meyer, Naval Research Lab. (United States)
C. S. Kim, Naval Research Lab. (United States)
M. Kim, Naval Research Lab. (United States)
C. L. Canedy, Naval Research Lab. (United States)
W. W. Bewley, Naval Research Lab. (United States)
J. R. Lindle, Naval Research Lab. (United States)
I. Vurgaftman, Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 6479:
Quantum Sensing and Nanophotonic Devices IV
Manijeh Razeghi; Gail J. Brown, Editor(s)

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