External cavity quantum cascade lasers with ultra rapid acousto-optic tuning
External cavity quantum cascade lasers with ultra rapid acousto-optic tuning
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DOI：
10.1063/1.4917241
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发表时间：
2015-04-06
影响因子：
4
通讯作者：
Patel, C. Kumar N.
中科院分区：
文献类型：
--
作者：
Lyakh, A.;Barron-Jimenez, R.;Patel, C. Kumar N.
报道了用声光调制器（AOM）控制发射波长的可调谐外腔量子级联激光器。当AOM频率从41 MHz左右变化到49 MHz左右时，长波红外量子级联激光器的波长从8.5 μ m左右调谐到9.8 μ m左右。激光器在调谐曲线的中心以近似4.7 cm（-1）的线宽提供超过350 mW的平均功率。在QCL的调谐范围内的任何两个波长之间的测量波长切换时间小于1 μ s。氟里昂的红外吸收特性的光谱测量表明，在不到20亩的能力，获得完整的光谱数据。(C)2015 AIP Publishing LLC.
We report operation of tunable external cavity quantum cascade lasers with emission wavelength controlled by an acousto-optic modulator (AOM). A long-wave infrared quantum cascade laser wavelength tuned from similar to 8.5 mu m to similar to 9.8 mu m when the AOM frequency was changed from similar to 41 MHz to similar to 49 MHz. The laser delivered over 350 mW of average power at the center of the tuning curve in a linewidth of similar to 4.7 cm(-1). Measured wavelength switching time between any two wavelengths within the tuning range of the QCL was less than 1 mu s. Spectral measurements of infrared absorption features of Freon demonstrated a capability of obtaining complete spectral data in less than 20 mu s. (C) 2015 AIP Publishing LLC.