Journal
OPTICS LETTERS
Volume 42, Issue 6, Pages 1181-1184Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.42.001181
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Funding
- Defense Advanced Research Projects Agency (DARPA) [HR0011-15-C-0056]
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Mid-infrared laser sources are of great interest for various applications, including light detection and ranging, spectroscopy, communication, trace-gas detection, and medical sensing. Silicon photonics is a promising platform that enables these applications to be integrated on a single chip with low cost and compact size. Silicon-based high-power lasers have been demonstrated at 1.55 mu m wavelength, while in the 2 mu m region, to the best of our knowledge, high-power, high-efficiency, and monolithic light sources have been minimally investigated. In this Letter, we report on high-power CMOS-compatible thulium-doped distributed feedback and distributed Bragg reflector lasers with single-mode output powers up to 267 and 387 mW, and slope efficiencies of 14% and 23%, respectively. More than 70 dB side-mode suppression ratio is achieved for both lasers. This work extends the applicability of silicon photonic microsystems in the 2 mu m region. (C) 2017 Optical Society of America
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