Paper

A Broadband Pulsed External-Cavity Quantum Cascade Laser Operating near 6.9 μm*

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©2016 Chinese Physical Society and IOP Publishing Ltd
, , Citation Luo Wei and Duan Chuan-Xi 2016 Chinese Phys. Lett. 33 024207 DOI 10.1088/0256-307X/33/2/024207

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cxduan@phy.ccnu.edu.cn

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1 College of Physical Science and Technology, Central China Normal University, Wuhan 430079

Dates

  1. Received 15 November 2015
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0256-307X/33/2/024207

Abstract

We report an external cavity quantum cascade laser (EC-QCL) operating near 6.9 μm using the Littman–Metcalf configuration. The EC-QCL works in a pulsed mode and can be tuned continuously from 1340 to 1640 cm−1 by only tilting the tuning mirror. The fine tuning ability of the EC-QCL is demonstrated by measuring the absorption spectrum of water in the ambient air with a lock-in amplifier.

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Footnotes

  • * 

    Supported by the National Natural Science Foundation of China under Grant Nos 11174098 and 11574107, and the Self-Determined Research Funds of Central China Normal University under Grant No CCNU15A02034.

10.1088/0256-307X/33/2/024207