Shiqi Yang, Yuanrui Cao, Xiao Yang, Jinlin Bai, Yang Meng, Huasong Liu. Study on the response characteristics of multilayer optical elements to beam linewidth[J]. Infrared and Laser Engineering, 2023, 52(12): 20230574
- Infrared and Laser Engineering
- Vol. 52, Issue 12, 20230574 (2023)
Fig. 1. Electromagnetic wave distribution in multilayer films
Fig. 2. Theoretical transmission spectrum of narrow-band filter
Fig. 3. Comparison of transmission spectra of narrowband filter with Gaussian, Lorentzian and rectangular line-shapes for beam linewidths of (a) 0.5 nm, (b) 2.5 nm, (c) 4.5 nm, and (d) 9.0 nm
Fig. 4. The curves of (a) central wavelength, (b) peak transmittance of transmission band, (c) full width at half maximum and (d) rectangle degree versus beam linewidth under Gaussian, Lorentzian and rectangular line-shape conditions
Fig. 5. Comparison of the overall transmission spectra of filters with different substrate thicknesses for linewidths of (a) 0.5 nm, (b) 2.5 nm, (c) 4.5 nm, and (d) 9.0 nm under the Gaussian line-shape condition
Fig. 6. Variation curves of transmittance at 1064 nm with substrate thickness for monolayer substrates with linewidths of (a) 0.5 nm; (b) 2.5 nm; (c) 4.5 nm, and (d) 9.0 nm under the Gaussian line-shape condition
Fig. 7. Gaussian line-shape conditions with linewidths of 0.5 nm, 2.5 nm, 4.5 nm, and 9.0 nm, (a) T max, and (b) FWHM versus substrate thickness curves
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