Hongming Liu, Yujuan Liu, Ying Song, Zhicheng Zhong, Lingsheng Kong, Huaibin Liu. Principle and optimum analysis of small near-infrared spectrometers based on digital micromirror device[J]. Infrared and Laser Engineering, 2021, 50(2): 20200427
- Infrared and Laser Engineering
- Vol. 50, Issue 2, 20200427 (2021)
Fig. 1. Schematic diagram of DMD-based spectrometer optical system
Fig. 2. Corresponding curves of different bands of InGaAs single-point detector
Fig. 3. Digital micromirror working principle diagram
Fig. 4. Diffraction efficiency curve
Fig. 5. System parameter diagram
Fig. 6. System optimization structure
Fig. 7. Spot diagram of the system simulation
Fig. 8. Spot diagram at different wavelengths during DMD imaging
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Table 1. Main parameters of a DMD-based small NIR spectrometer
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Table 2. Optical system design parameters
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