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We report on GaSb-based laterally coupled distributed-feedback (DFB) diode lasers designed to operate at wavelengths near 2.05 μm. Second-order Bragg gratings were etched alongside narrow ridge waveguides to enable single-mode DFB operation in 2-mm-long laser diodes. At a heat-sink temperature of 10 °C, the lasers emit more than 40 mW continuous-wave in a single longitudinal mode, while increasing the current beyond 300 mA results in multimode operation due to spectral shifting of the laser gain with respect to the peak grating reflectivity. At -10 °C, we observe DFB operation at higher current, with single-facet emission exceeding 80 mW.
Published in:
Applied Physics Letters
(Volume:100
,
Issue:
3
)
Date of Publication: Jan 2012
- Page(s):
- 031107 - 031107-4
- ISSN :
- 0003-6951
- Digital Object Identifier :
- 10.1063/1.3678187
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 23 January 2012
- Issue Date :
- Jan 2012
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