论文标题
光频梳傅里叶变换腔圆形光谱
Optical frequency comb Fourier transform cavity ring-down spectroscopy
论文作者
论文摘要
我们使用近红外频率梳子和时间分辨的傅立叶变换光谱仪展示了宽带和敏感的腔环铃响光谱。同时测量和频谱分类的空腔衰减，导致每个光谱元素的纯指数衰减。检索大气水和二氧化碳的吸收光谱，并证明了该技术的高频分辨率和吸收精度。描述了实验设备，测量概念和数据处理。该技术受益于空腔降压光谱的优势，即检索到的吸收不取决于腔参数，从而完全无校准，以使高精度吸收光谱谱图开放。
We demonstrate broadband and sensitive cavity ring-down spectroscopy using a near infrared frequency comb and a time-resolved Fourier transform spectrometer. The cavity decays are measured simultaneously and spectrally sorted, leading to purely exponential decays for each spectral element. The absorption spectra of atmospheric water and carbon dioxide are retrieved and demonstrate the high frequency resolution and absorption precision of the technique. The experimental apparatus, the measurement concept and the data treatment are described. The technique benefits from the advantages of cavity ring-down spectroscopy, i.e. the retrieved absorption does not depend on the cavity parameters, opening up for high accuracy absorption spectroscopy entirely calibration-free.
