Jinlong Zhang, Shuaikai Shi, Hongfei Jiao, Xinbin Cheng. Analytical Mode Matching in Stacked Subwavelength Gratings[J]. Acta Optica Sinica, 2020, 40(12): 1205001
- Acta Optica Sinica
- Vol. 40, Issue 12, 1205001 (2020)
Fig. 1. Stacked grating structure diagrams. (a) Three-dimensional schematic diagram; (b) section diagram
Fig. 2. Three layers stacked grating section diagram
Fig. 3. Cross section diagram of double layers grating and calculation errors of diffraction efficiency. (a) Section diagram (Λ=780 nm, s/Λ=0.72,z1=440 nm,z2=370 nm); (b) comparison of diffraction efficiency calculated by rigorous coupled wave analysis and mode analytical method
Fig. 4. Comparison of the amplitude distribution of magnetic field calculated by two methods in the double layers grating. (a) Rigorous coupled wave analysis; (b) mode analytical method
Fig. 5. Amplitude distribution of magnetic field of the first four modes in the double layers grating. (a) Mode 1; (d)mode 2; (c)mode 3; (d)mode 4
Fig. 6. Sectional diagram of three-layer stacked grating and calculation error of diffraction efficiency. (a) Section diagram (Λ=690 nm, s/Λ=0.76, z1=405 nm, z2=662 nm, z3=284 nm); (b) comparison of diffraction efficiency calculated by rigorous coupled wave analysis and mode analytical method
Fig. 7. Calculation results of three-layer stacked grating. (a) Amplitude distribution of magnetic field of the first four modes in the grating; (b) perfect cancellation of two modes at the output plane(z=0) leading to high reflectivity
|
Table 1. Running time of different algorithms for the double layers grating calculation
|
Table 2. Running time of different algorithms for three-layers stacked grating calculation
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20