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Your search keyword '"Chen, Siying"' showing total 13 results
Start Over Author "Chen, Siying" Publication Year Range Last 10 years Journal applied optics
13 results on '"Chen, Siying"'

13. Optical design of a reflective double-grating spectrometer to detect one branch in the pure rotational Raman spectrum of N 2 .

Author

Wang L, Chen H, Zhang Y, Chen S, Guo P, Tan W, Jiang Y, and Li X

Abstract

This paper presents the optical design of a high-resolution double-grating spectrometer for extracting the multiple lines in the Stokes or anti-Stokes branch of the pure rotational Raman spectra of nitrogen. The spectrometer is composed of collimating and focusing mirrors, two reflective gratings, and a linear detector. The structural parameters were calculated using geometric configuration, dispersion, and aberrational theory, and conditions for first-order correction of keystone distortion with divergent grating illumination were derived. Based on this method, we simulated a spectrometer with a 16-channel linear array photomultiplier tube, resulting in uniformly distributed single-branch lines on each detector channel. The resolution reached 0.225 nm per channel, and the keystone distortion was less than 0.7%. The spectrometer avoids the interference of elastic signals by not detecting them, enabling the extraction of atmospheric temperature profiles via separated single-branch lines with high precision. Our design provides a promising solution to extract atmospheric temperature profiles for pure rotational Raman lidar.

Published
2023
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