TITLE

Corrugated-sidewall interband cascade lasers with single-mode midwave-infrared emission at room temperature

AUTHOR(S)
Kim, C. S.; Kim, M.; Bewley, W. W.; Lindle, J. R.; Canedy, C. L.; Abell, J.; Vurgaftman, I.; Meyer, J. R.
PUB. DATE
December 2009
SOURCE
Applied Physics Letters;12/7/2009, Vol. 95 Issue 23, p231103
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report interband cascade lasers operating in a single spectral mode (λ≈3.6 μm) at -5–30 °C. A corrugated pattern etched into both sidewalls of the 6- and 9-μm-wide ridges serves to suppress higher-order lateral modes by increasing their loss, and also provides a fourth-order distributed-feedback grating for longitudinal mode selection. Despite the grating’s weak coupling strength, the 9 μm ridge produced up to 12 mW per facet of single-mode cw output power at 25 °C, with a side-mode suppression ratio of >30 dB.
ACCESSION #
46708397

 

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