InAs-Based Single-Mode Distributed Feedback Interband Cascade Lasers

Author

Jiang, Yuchao ; Li, Lu ; Ye, Hao ; Yang, Rui Q. ; Mishima, Tetsuya D. ; Santos, Michael B. ; Johnson, Matthew B. ; Feng, David Jui-Yang ; Choa, Fow-Sen

Author_Institution

School of Electrical and Computer Engineering, University of Oklahoma, Norman, OK, USA

Volume

51

Issue

9

fYear

2015

Firstpage

1

Lastpage

7

Abstract

InAs-based single-mode distributed feedback (DFB) interband cascade (IC) lasers were investigated. The DFB grating was patterned using interference lithography to etch the cladding-free upper separate confinement layer of the IC laser structure. Single-mode emission with a side mode suppression ratio of $\\sim 30$ dB was obtained in continuous wave operation at temperatures up to 180 K near 4.5 $\\mu text{m}$ . A total tuning range of 16 nm could be achieved for a single device, with typical temperature- and current-tuning rates of 0.4 nm/K and 0.016 nm/mA, respectively. The impact of the DFB grating on device performance was evaluated and discussed in comparison with Fabry–Perot lasers.

Keywords

Gratings; Integrated circuits; Metals; Performance evaluation; Quantum cascade lasers; Threshold current; Tuning; Diode lasers; distributed feedback devices; interband cascade; mid-infrared;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2015.2470534

Filename

7234837