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Title: Mid-infrared widely tunable single-mode interband cascade lasers based on V-coupled cavities

We demonstrate widely tunable single-mode V-coupled-cavity lasers emitting at wavelengths near 3 µm based on a type-II interband cascade (IC) structure. The mode selection is achieved using a half-wave V-coupler designed for the IC structure in the mid-infrared range. The laser waveguides and cavity structure are deeply etched in a single etching step, without any grating. By changing the injection current at a fixed heat-sink temperature, a tuning range over 35 nm can be achieved with a side-mode suppression-ratio up to 28 dB. The tuning range can be extended to 60 nm when combined with the adjustments of the heat-sink temperature.

 
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Award ID(s):
1931193
NSF-PAR ID:
10148273
Author(s) / Creator(s):
; ; ;
Publisher / Repository:
Optical Society of America
Date Published:
Journal Name:
Optics Letters
Volume:
45
Issue:
10
ISSN:
0146-9592; OPLEDP
Page Range / eLocation ID:
Article No. 2700
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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