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Proceedings Paper

Integrated widely tunable quantum cascade lasers with super-structure gratings
Author(s): Dingkai Guo; Xing Chen; Jiun-Yun Li; Liwei Cheng; Terrance Worchesky; Fow-Sen Choa
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Paper Abstract

An integrated widely wavelength tunable mid-IR source is demonstrated. This three-section quantum cascade laser consists of a Fabry-Perot section placed between two super-structure grating (SSG) sections. The emission wavelength of the SSG-DBR QCL can be well controlled by varying the injection currents to the two grating sections of the device. The wavelength can be tuned from 4.58 μm to 4.77 μm (90 cm-1) with a supermode spacing of 30 nm. The SSG-DBR QCL can be a compact replacement for the external cavity QCL. It has great potential to achieve much further tuning ranges for many mid-IR sensing applications.

Paper Details

Date Published: 27 February 2014
PDF: 8 pages
Proc. SPIE 9002, Novel In-Plane Semiconductor Lasers XIII, 90021N (27 February 2014); doi: 10.1117/12.2040965
Show Author Affiliations
Dingkai Guo, Univ. of Maryland, Baltimore County (United States)
Xing Chen, Univ. of Maryland, Baltimore County (United States)
Jiun-Yun Li, Princeton Univ. (United States)
Liwei Cheng, Univ. of Maryland, Baltimore County (United States)
Terrance Worchesky, Univ. of Maryland, Baltimore County (United States)
Fow-Sen Choa, Univ. of Maryland, Baltimore County (United States)

Published in SPIE Proceedings Vol. 9002:
Novel In-Plane Semiconductor Lasers XIII
Alexey A. Belyanin; Peter M. Smowton, Editor(s)

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