Journal
SENSORS
Volume 21, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/s21020323
Keywords
optical design; Czerny– Turner spectrometer; cylindrical lens
Funding
- Key Research and Development Program of Anhui Province [1804d08020310]
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This paper presents a unique method to design a high-throughput and high-resolution ultrathin Czerny-Turner (UTCT) spectrometer based on Coddington's equations. By simulating the design, a spectral resolution of 0.4 nm at central wavelength and 0.75 nm at edge wavelength was achieved with a slit width of 25 μm and a groove density of 900 lines/mm.
A unique method to design a high-throughput and high-resolution ultrathin Czerny-Turner (UTCT) spectrometer is proposed. This paper reveals an infrequent design process of spectrometers based on Coddington's equations, which will lead us to develop a high-performance spectrometer from scratch. The spectrometer is composed of cylindrical elements except a planar grating. In the simulation design, spot radius is sub-pixel size, which means that almost all of the energy is collected by the detector. The spectral resolution is 0.4 nm at central wavelength and 0.75 nm at edge wavelength when the width of slit is chosen to be 25 mu m and the groove density is 900 lines/mm.
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