Acta Optica Sinica, Volume. 44, Issue 24, 2422001(2024)
Design Method of Spectral Tunable Stellar Spectrum Simulation System Based on Dual-Grating Dispersion Multiplexing
Figures & Tables(25)
Fig. 1. Results of 2700 K color temperature simulation at spectral half-peak width ω=10 nm. (a) ω=10 nm, Δλ=5 nm; (b) ω=10 nm,Δλ=10 nm; (c) ω=10 nm, Δλ=20 nm
Fig. 2. Results of 2700 K color temperature simulation at spectral half-peak width ω=20 nm. (a) ω=20 nm, Δλ=5 nm; (b) ω=20 nm, Δλ=10 nm; (c) ω=20 nm, Δλ=20 nm
Fig. 3. Results of 2700 K color temperature simulation at spectral half-peak width ω=50 nm. (a) ω=50 nm, Δλ=5 nm; (b) ω=50 nm, Δλ=10 nm; (c) ω=50 nm, Δλ=20 nm
Fig. 4. Schematic representation of composition of spectral tunable stellar simulation system
Fig. 10. Two-grating dispersion multiplexing spectral tunable stellar spectral simulation test platform
Table 1. DMD parameters of DLP6500 model
View tableTable 1. DMD parameters of DLP6500 model
Parameter Value Eigenresolution 1080×1920 Microscope array size 1.651 cm Micromirror element size 7.56 μm Spectral range 300‒1600 nm
Table 2. Output beam parameters of supercontinuum laser source
View tableTable 2. Output beam parameters of supercontinuum laser source
Parameter Value Output spot radius 2 mm@1000 nm， 1.5 mm@500 nm spectral range 420‒2500 nm luminous power 6 W Divergence angle <2 mrad （0.115°）
Table 3. Parallelism of output beam
View tableTable 3. Parallelism of output beam
Field of view
（normalized）
Pupil position
（normalized）
With optical axis angle /（°） 0 1.0 0.0002 0 0.0000 1.0 0.0002 0.7 1.0 0.0055 0 0.0008 1.0 0.0059 1.0 1.0 0.0079 0 0.0012 1.0 0.0084
Table 4. Optical parameters of no-focal dispersion system
View tableTable 4. Optical parameters of no-focal dispersion system
Number Radius /mm Thickness /mm Glass 1 7.75 2.00 H-K9L 2 Infinity 53.33 — 3 36.18 5.25 H-K9L 4 Infinity 62.84 — 5 Infinity 42.25 Mirror 6 （DGRATING） Infinity 65.00 — 7 （DGRATING） Infinity 73.80 — 8 （DMD） Infinity — —
Table 5. Test data of beam half-peak width
View tableTable 5. Test data of beam half-peak width
Parameter Value Channel 1 Channel 2 Channel 3 Channel 4 Channel 5 Channel 6 FWHM 41.20 39.10 40.41 43.30 40.69 40.49
Table 6. Test data of spectral peak interval
View tableTable 6. Test data of spectral peak interval
Parameter Value Channel 1 Channel 2 Channel 3 Channel 4 Channel 5 Channel 6 Peak wavelength 530.57 534.69 706.67 710.13 870.53 874.66 Peak interval （Δλ2-Δλ1） 4.12 3.46 4.13
Table 7. Test results of magnitude simulation accuracy and range
View tableTable 7. Test results of magnitude simulation accuracy and range
Magnitude /Mv Magnitude simulation error /Mv 0 +0.011 +1 +0.025 +2 -0.022 +3 +0.021 +4 -0.031 +5 -0.029 +6 +0.221
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Da Xu, Gaofei Sun, Jierui Zhang, Siwen Chen, Jiayi Qiao, Xianzhu Liu, Yao Meng, Shi Liu. Design Method of Spectral Tunable Stellar Spectrum Simulation System Based on Dual-Grating Dispersion Multiplexing[J]. Acta Optica Sinica, 2024, 44(24): 2422001
Paper Information
Category: Optical Design and Fabrication
Received: Apr. 22, 2024
Accepted: Jun. 24, 2024
Published Online: Dec. 19, 2024
The Author Email: Sun Gaofei (51579428@qq.com)
CSTR:32393.14.AOS240882
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