论文类型：期刊论文
第一作者：Yu, Anlan
通讯作者：Zuo, Duluo
合写作者： Anlan; Zuo, Duluo; Li, Bin; Gao, Jun; Wang, Xinbing
发表刊物：Applied Optics
收录刊物：EI、SCI
所属单位：武汉光电国家实验室
刊物所在地：USA
学科门类：工学
一级学科：光学工程
文献类型：J
卷号：55
期号：13
页面范围：3650-3655
ISSN号：1559-128X
发表时间：2016-04-26
摘要：A compact Raman system constructed by a parabolic sample cell and an imaging spectrograph, which has good capability for enhancing a Raman signal and compressing a continuous background, has been put forward. In the Raman spectra of ambient air acquired by this system, the signal level of N-2 was enhanced up to 14 times compared with free space, and the related signal to background ratio was increased nearly to 96. With an integration time of 10 s, the rotational fine structure of O-2 and N-2 were clearly recognized. Besides, a standard analytic gas mixture consisting of H-2, CO2, and CO ...