Wide single-mode tuning in quantum cascade lasers with asymmetric Mach-Zehnder interferometer type cavities with separately biased arms
- Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544 (United States)
- AdTech Optics, Inc., City of Industry, California 91748 (United States)
We report on the experimental demonstration of a widely tunable single mode quantum cascade laser with Asymmetric Mach-Zehnder (AMZ) interferometer type cavities with separately biased arms. Current and, consequently, temperature tuning of the two arms of the AMZ type cavity resulted in a single mode tuning range of 20 cm{sup −1} at 80 K in continuous-wave mode operation, a ten-fold improvement from the lasers under a single bias current. In addition, we also observed a five fold increase in the tuning rate as compared to the AMZ cavities controlled by one bias current.
- OSTI ID:
- 22253991
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 21 Vol. 103; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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