Jinlong Zhang, Shuaikai Shi, Hongfei Jiao, Xiaochuan Ji, Zhanshan Wang, Xinbin Cheng, "Ultra-broadband reflector using double-layer subwavelength gratings," Photonics Res. 8, 426 (2020)
- Photonics Research
- Vol. 8, Issue 3, 426 (2020)
Fig. 1. (a) Cross-sectional view of the double-layer subwavelength grating mirror, (b) interference of light between the two subwavelength gratings.
![(a) Computed zeroth-order reflectance of the two gratings for TM-polarized light at normal incidence (R12,R23, and Rtotal), (b) round-trip phase of the cavity [δ(λ)].](/richHtml/prj/2020/8/3/03000426/img_002.jpg)
Fig. 2. (a) Computed zeroth-order reflectance of the two gratings for TM-polarized light at normal incidence (R 12 , R 23 R total δ ( λ )
Fig. 3. Calculated and measured spectra of the double-layer SWG for TM-polarized light.
Fig. 4. SEM top and cross-sectional views of the double-layer SWG on a quartz substrate.
Fig. 5. Fitted and measured spectra of the double-layer SWG for TM-polarized light.
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