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.
机构署名：
本校为第一且通讯机构
院系归属：
物理科学与技术学院
摘要：
We report an external cavity quantum cascade laser (EC-QCL) operating near 6.9 μm using the LittmanMetcalf 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 lo...
