Infrared and Laser Engineering, Volume. 50, Issue 2, 20200427(2021)
Principle and optimum analysis of small near-infrared spectrometers based on digital micromirror device
Figures & Tables(10)
Fig. 1. Schematic diagram of DMD-based spectrometer optical system
Fig. 2. Corresponding curves of different bands of InGaAs single-point detector
Table 1. Main parameters of a DMD-based small NIR spectrometer
View tableView in ArticleTable 1. Main parameters of a DMD-based small NIR spectrometer
Parameter Value Wavelength range 1000-1700 nm Spectral resolution <15 nm Size <150 mm×150 mm×150 mm
Table 2. Optical system design parameters
View tableView in ArticleTable 2. Optical system design parameters
Parameter Value Working wavelength 1000-1700 nm Slit length 1 mm Slit width 50 μm Collimating lens focal length 75 nm Imaging lens focal length 45 nm Raster line density 300 l/mm DMD pixel size 7.6 μm×7.6 μm DMD pixel number 1140×912 pixels DMD tilt angle ±12°
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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
Paper Information
Category: Lasers and laser optics
Received: Dec. 5, 2020
Accepted: --
Published Online: Mar. 22, 2021
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