双光梳光谱学研究进展

Progress in dual-comb spectroscopy

双光梳光谱仪具有超高光谱分辨率、超快采样时间的特性,是研究分子吸收光谱的有力工具。文章介绍了双光梳光谱仪的基本原理以及它与传统傅里叶光谱仪的区别,叙述了几种典型的双光梳光谱仪构成及其用于测量分子吸收光谱的实验结果,并对双光梳光谱学做了详细说明。随着中红外光梳和中红外探测器技术的进一步发展,双光梳光谱学将会在大气污染监测、呼吸气体检测等重要的国计民生领域得到越来越广泛的应用。

Dual-comb spectrometers possess the advantages of both high resolution and short measurement times, which make them powerful tools in studying molecular spectroscopy. This article explores the principles of dual-comb spectroscopy and makes a comparison with tradi-tional Fourier transform spectrometers. We then explain in detail both the structures and the mo-lecular absorption results of several typical dual-comb spectrometers. With the development of op-tical frequency combs and detector techniques in the mid-infrared region, dual-comb spectrosco-py is bound to be widely used in such fields as air pollution and breath gas detection in the near future.