Indexed by: Journal paper

First Author: Yu, Anlan

Correspondence Author: Zuo, Duluo

Co-author: Anlan; Zuo, Duluo; Li, Bin; Gao, Jun; Wang, Xinbing

Journal: Applied Optics

Included Journals: EI、SCI

Affiliation of Author(s): Wuhan National Laboratory for Optoelectronics

Place of Publication: USA

Discipline: Engineering

First-Level Discipline: Other specialties in Optical Engineering

Document Type: J

Volume: 55

Issue: 13

Page Number: 3650-3655

ISSN No.: 1559-128X

Date of Publication: 2016-04-26

Abstract: 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 ...