Continuous wave operation of quantum cascade lasers with frequency-shifted feedback
Abstract
Operation of continuous wave quantum cascade lasers with a frequency-shifted feedback provided by an acousto-optic modulator is reported. Measured linewidth of 1.7 cm−1 for these devices, under CW operating conditions, was in a good agreement with predictions of a model based on frequency-shifted feedback seeded by spontaneous emission. Linewidth broadening was observed for short sweep times, consistent with sound wave grating period variation across the illuminated area on the acousto-optic modulator. Standoff detection capability of the AOM-based QCL setup was demonstrated for several solid materials.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 01, 2016
- Source ID
- 10.1063/1.4940760
Entities
People
- Arkadiy Lyakh
- Chandra Patel
- G. Tsvid
- I. Dunayevskiy
- R. Barron-jimenez
- R. Go
Organizations
- Army Research Office
- University of Central Florida