Rapid and sensitive trace gas detection with continuous wave Optical Parametric Oscillator-based Wavelength Modulation Spectroscopy
Rapid and sensitive trace gas detection with continuous wave Optical Parametric Oscillator-based Wavelength Modulation Spectroscopy
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使用基于连续波光学参量振荡器的波长调制光谱进行快速、灵敏的痕量气体检测
DOI：
10.1007/s00340-010-4242-0
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
Arslanov D
中科院分区：
文献类型：
--
作者：
Arslanov D
采用光纤放大的分布布拉格反射器半导体激光器泵浦连续波单谐振光参量振荡器（OPO）。输出辐射覆盖3-4 μm，具有快速（100 THz/s）和宽模式无跳变（5 cm−1）的调谐能力。波长调制光谱与OPO相结合，以充分利用光谱扫描速度。该系统的灵敏度被确定为0.8 ppbv（十亿分之一体积）乙烷（C2 H6）的吸收峰在2996.9 cm− 1记录在1.3秒，对应的噪声等效吸收灵敏度（NEAS）为1.2×10− 9 cm −1/Hz 1/2。对波长调制的一阶、二阶和四阶谐波导数信号的结果进行了比较。通过覆盖35 cm− 1，同时记录乙烷、甲烷和水的吸收特征，证明了广泛的连续可调谐性。
A fiber-amplified Distributed Bragg Reflector diode laser is used to pump a continuous wave, singly resonant Optical Parametric Oscillator (OPO). The output radiation covers the 3–4 μm with ability of rapid (100 THz/s) and broad mode-hop-free tuning (5 cm−1). Wavelength Modulation Spectroscopy is combined with the OPO to take optimal advantage of the spectral scan speed. The sensitivity of the system was determined as 0.8 ppbv (parts-per-billion by volume) for ethane (C2H6) for the absorption peak at 2996.9 cm−1recorded in 1.3 seconds, corresponding to a noise equivalent absorption sensitivity (NEAS) of 1.2×10−9cm−1/Hz1/2. A comparison between results using the 1st, 2ndand 4thharmonic derivative signal from wavelength modulation was performed. The broad continuous tunability was demonstrated by covering 35 cm−1while recording absorption features of ethane, methane and water.
由光纤放大 DBR 二极管激光器泵浦的光学参量振荡器实现 110GHz 快速、连续调谐。
影响因子：
3.8
作者：
I. Lindsay;B. Adhimoolam;P. Gross;M. Klein;K. Boller
通讯作者：
K. Boller
影响因子：
2.1
作者：
Moeskops, BWM;Naus, H;Harren, FJM
通讯作者：
Harren, FJM