Dependence of interferogram phase on incident wavenumber and phase stability of Doppler asymmetric spatial heterodyne spectroscopy  

作　　者：Ya-Fei Zhang Yu-Tao Feng Di Fu Peng-Chong Wang Jian Sun Qing-Lan Bai 张亚飞;冯玉涛;傅頔;王鹏冲;孙剑;白清兰(Xi'an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi'an 710119,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]Xi'an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi'an 710119,China [2]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Chinese Physics B》2020年第10期255-260,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No. 41005019);the Fund from the Chinese Academy of Scieneces for West Yong Scientists (Grant No. XAB 2016A07);the Natural Science Basic Research Program of Shaanxi Province, China (Grant No. 2019JQ-931).

摘　　要：Instrument drifts introduce additional phase errors into atmospheric wind measurement of Doppler asymmetric spatial heterodyne spectroscopy (DASH). Aiming at the phase sensitivity of DASH to instrument drifts, in this paper we calculate the optical path difference (OPD) and present an accurate formula of DASH interferogram. By controlling variables in computational ray-tracing simulations and laboratory experiments, it is indicated that initial phase is directly determined by incident wavenumber, OPD offset and field of view (FOV). Accordingly, it is indicated that retrieved phase of DASH is sensitive to slight structural change caused by instrument drift, which provides the proof of necessary-to-track and -correct phase errors from instrument drifts.

关 键 词：atmospheric wind measurement Doppler asymmetric spatial heterodyne spectroscopy optical path difference interference phase 

分 类 号：O436.1[机械工程—光学工程] P41[理学—光学] P351[理学—物理]