Shan Mao, Tao Lai, Huaile Nie, Yufeng Tang, Yichen Song, Jianlin Zhao. Optimal Design and Application of Double-Layer Diffractive Optical Element over Wide Temperature Range[J]. Acta Optica Sinica, 2023, 43(8): 0822026
- Acta Optica Sinica
- Vol. 43, Issue 8, 0822026 (2023)
Fig. 1. Micro-structure heights changing with environment temperature change
Fig. 2. Influence of ambient temperature on diffraction efficiency of double-layer DOE based on traditional design. (a) Diffraction efficiency varying with wavelength and temperature; (b) BIADE varying with temperature
Fig. 3. Influence of incident wavelength on diffraction characteristics under ambient temperature of -20-60 ℃
Fig. 4. Influence of ambient temperature on diffraction efficiency of double-layer DOE based on optimized design. (a) Diffraction efficiency varying with wavelength and temperature; (b) BIADE varying with temperature
Fig. 5. Athermalization design results of mid-infrared waveband hybrid imaging optical system containing double-layer DOE
Fig. 6. MTF of middle infrared hybrid imaging optical system at different temperatures. (a) 20 ℃; (b) -20 ℃; (c) 60 ℃
Fig. 7. Minimum MTF of hybrid imaging optical system at cutoff frequency. (a) TBIADE under two designs; (b) effect of TBIADE on MTF
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Table 1. Design results of double-layer DOE based on BIADE
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Table 2. Design results of double-layer DOE under ambient temperature of -20-60 ℃
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Table 3. Athermalization design specifications of mid-infrared waveband hybrid imaging optical system
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Table 4. Structure parameters of mid-infrared waveband hybrid imaging optical system with double-layer DOE
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Table 5. Parameters of binary DOE surfaces for double waveband hybrid imaging optical system
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