Yi Ding, Haiyan Luo, Hailiang Shi, Zhiwei Li, Yunfei Han, Wei Xiong. New Flat-Field Correction Method for Spatial Heterodyne Spectrometer[J]. Acta Optica Sinica, 2020, 40(19): 1930002
- Acta Optica Sinica
- Vol. 40, Issue 19, 1930002 (2020)
Fig. 1. Spatial heterodyne spectrometer. (a) Schematic of optical path; (b) monolithic SHS interferometer
Fig. 2. Variation of interference intensity in the direction of dispersion at different wavelengths
Fig. 3. Relationship between wavenumber and modulation
Fig. 4. Simulation results
Fig. 5. Transmittance curve of the flat-field correction filter
Fig. 6. Layout of experimental breadboard
Fig. 7. Relative illumination curve of the system(selected characteristic wavelengths of the interference working filter and flat-field filter are 1575 nm and 1500 nm, respectively)
Fig. 8. Experimental results. (a) Interferogram of flat-field filter; (b) interferogram of working filter
Fig. 9. Comparison between single-row flat-field data and interference data
Fig. 10. Comparison of flat-field correction effect. (a) Interferogram before flat-field correction; (b) interferogram after flat-field correction
Fig. 11. Comparison of single-row interference data before and after flat-field correction
Fig. 12. Effect of flat-field correction on recovery spectrum
|
Table 1. Main parameters of CO2 spatial heterodyne spectrometer
|
Table 2. Effects of flat-field correction
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20