Resonance of the monochromatic lights. (IMAGE)
Caption
(a) Schematic model of the conjugated-BIC optical grating with the incident light projects onto the grating. The thicknesses of ITO, SnO2, and ZEP520A are set at 50 nm, 50 nm, and 350 nm, respectively. Field distribution at the grating with the (b) on-resonant light and (c) off-resonant light. Results show that the 540-nm on-resonant light generates a strong resonance with the grating, resulting in monochromatic light confinement. Top-view SEM images of the gratings with resonant wavelength at (d) 455 nm, (e) 540 nm, and (f) 655 nm. Results show that tuning the grating structure can effectively adjust the wavelength of the on-resonant light. Corresponding simulated and experimental transmission spectra of the gratings with resonant wavelength at (g) 455 nm, (h) 540 nm, and (i) 655 nm. On-resonant lights can be effectively confined and off-resonant lights will transmit through the grating, resulting in sharp dips in the transmission spectra.
Credit
by Yanhao Li, Xiong Jiang, Yimu Chen, Yuhan Wang, Yunkai Wu, De Yu, Kaiyang Wang, Sai Bai, Shumin Xiao, Qinghai Song
Usage Restrictions
Credit must be given to the creator.
License
CC BY