Martín-Mateos Pedro, Acedo Pablo
Opt Express. 2014 Jun 16;22(12):15143-53. doi: 10.1364/OE.22.015143.
In this paper, a technique for molecular dispersion spectroscopy based on heterodyne phase-sensitive detection is presented. The method offers immunity to fluctuations of the received optical power and an output linearly dependent of the gas concentration. Besides this, an analytical model for the propagation of light in gaseous samples has been developed enabling calibration-free operation. The proposed architecture has been tested and experimentally validated using methane as target gas.
本文提出了一种基于外差相敏检测的分子色散光谱技术。该方法不受接收光功率波动的影响，输出与气体浓度呈线性相关。除此之外，还开发了一种用于光在气态样品中传播的分析模型，实现了免校准操作。所提出的架构已使用甲烷作为目标气体进行了测试和实验验证。
