Wavelength Modulation Spectroscopy 波长调制光谱 ; 波长调制光谱学 ; 波长调制光谱技术
wavelength modulation function 波长调制函数
wavelength modulation technique 波长调制
Wavelength modulation spectroscopy technology 波长调制光谱技术
wavelength modulation and harmonic detection 波长调制和谐波探测技术
wavelength-temperature modulation 温控调频
Wavelength modulation spectroscopy was performed to increase the signal-to-noise ratio. A sensitivity of 130 ppm was obtained with an integration time of 2 s. The discrepancy between the measured and the calculated value was less than 1%.
在以CO2为样例气体的测量实验中,使用中心发射波长为1578.7nm的VCSEL型二极管激光器获得了CO2的高分辨吸收光谱,通过应用波长调制光谱（WMS）技术显著提高了信噪比,采用2s的积分时间获得了130ppm的测量灵敏度,测量值与计算值的偏差小于1%。
参考来源 - 气体监测的可调谐多模二极管激光关联光谱技术研究Signal to noise ratio (SNR) is improved by using wavelength modulation and second harmonic detection.
同时结合波长调制和锁相放大器的二次谐波探测技术,提高了系统的信噪比,得到了较高的检测极限灵敏度。
参考来源 - 基于光纤激光器和光纤放大器的光声光谱仪·2,447,543篇论文数据，部分数据来源于NoteExpress
Wavelength modulation spectroscopy (WMS) is an important technique of TDLAS.
波长调制光谱(WMS)技术是TDLAS技术中一种重要技术。
Then, the idea that detecting oxygen concentration by using laser diode wavelength modulation and harmonic signal treatment was proposed.
在分析比较的基础上，提出将激光二极管发射波长调制及谐波检测分析处理技术用于氧气浓度检测。
Difference absorption measurement and wavelength modulation harmonic measurement are two fundamental approaches for gas light absorption detection.
差分吸收检测和波长调制谐波检测是气体光吸收检测的两种基本方法。
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