Acta Photonica Sinica, Volume. 51, Issue 5, 0530001(2022)
Research on Near-infrared Spatial Heterodyne Raman Spectrometer
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Fig. 2. Simulation optical system of spatial heterodyne Raman spectroscopy
Fig. 3. Simulation results of spatial heterodyne Raman spectroscopy
Fig. 4. Magnification and distortion test target of fringe-imaging lens group
Fig. 5. The experiment prototype of spatial heterodyne Raman spectroscopy
Fig. 6. Actual test results of spatial heterodyne Raman spectroscopy
Fig. 8. Raman spectrum of calcium carbonate，calcium sulfate，and potassium sulfate
Table 1. The system parameters of spatial heterodyne Raman spectroscopy
View tableView in ArticleTable 1. The system parameters of spatial heterodyne Raman spectroscopy
Component Description Littrow wavelength 842 nm Spectral sampling interval 2.96 cm-1（0.21 nm@842 nm） Raman shift range 171.71~3 031.04 cm-1 Grating Groove density：150 lp/mm Blaze angle：3.62° Effective size：13.338 mm×13.338 mm Field-widened prism Wedge angle：4.7255° Material：silica Detector Pixel size：6.5 μm×6.5 μm Pixel number：2 048×2 048 Fringe-imaging lens group Magnification：1 F number：9 Collimator lens Object NA：0.22 Focal length：44.341 mm
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Bozhao FAN, Yutao FENG, Quan WANG, Chi GAO, Yang WU, Bin HAN, Chenguang CHANG, Juan LI, Yiru LI, Hengxiang ZHAO, Di FU. Research on Near-infrared Spatial Heterodyne Raman Spectrometer[J]. Acta Photonica Sinica, 2022, 51(5): 0530001
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Received: Dec. 16, 2021
Accepted: Jan. 10, 2022
Published Online: Jun. 28, 2022
The Author Email: Yutao FENG (fytciom@126.com)
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