A Broadband Pulsed External-Cavity Quantum Cascade Laser Operating near 6.9μm
Wei Luo, Chuan-Xi Duan**
College of Physical Science and Technology, Central China Normal University, Wuhan 430079
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.
收稿日期: 2015-11-15
出版日期: 2016-02-26
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2016, Vol. 33 
