? ~ 3.35 µm distributed-feedback quantum-cascade lasers with high-aspect-ratio lateral grating

Slight, T. and Tandoi, G. and Revin, D. and McKee, A. and Zhang, S. and Meredith, W. and Cockburn, J. et al. 2011. ? ~ 3.35 µm distributed-feedback quantum-cascade lasers with high-aspect-ratio lateral grating. IEEE Photonics Technology Letters. 23 (7): pp. 420-422.

Source Title

IEEE Photonics Technology Letters

DOI

10.1109/LPT.2010.2103358

ISSN

1041-1135

School

Department of Physics and Astronomy

URI

http://hdl.handle.net/20.500.11937/5825

Collection

Curtin Research Publications

Abstract

We report the development of room-temperature distributed-feedback quantum-cascade lasers operating in a single mode in the 3.34 to 3.35 μm wavelength range. First-order lateral gratings with high aspect ratio (the ratio between the grating etch depth and its period) were formed using inductively coupled plasma etching. The as-cleaved lasers emit in pulsed regime with a sidemode suppression ratio of up to 24 dB and a peak single-mode output power of 130 mW from a single facet.