作者
Bing‐Ru Wu, Jhen‐Hong Yang, Pavel S Pankin, Chih‐Hsiang Huang, Wei Lee, Dmitrii N Maksimov, Ivan V Timofeev, Kuo‐Ping Chen
发表日期
2021/5
期刊
Laser & Photonics Reviews
卷号
15
期号
5
页码范围
2000290
简介
Quasibound state in the continuum (quasi‐BIC) is a long‐lived state with a high quality factor (Q factor). Here quasi‐BICs in nematic liquid crystal (LC) layer embedded between a distributed Bragg reflector (DBR) and a metal layer are studied. First, a special class of true BICs between the DBR and the metal film with field localization provided by the Brewster transverse electric (TE) reflection in the DBR is experimentally demonstrated. It is demonstrated that the Q factor of the quasi‐BIC can be tuned by the LC optical axis rotation in a wide range being only restricted by metal losses. The change of coupling with the radiation channel leads to a critical coupling condition, providing a total absorption of incident light. The acquired quasi‐BIC resonance is extremely sensitive to the temperature due to the narrow nematic temperature range of the LC. The quasi‐BIC transforms to BIC at the LC‐isotropic clearing point, due …
学术搜索中的文章
BR Wu, JH Yang, PS Pankin, CH Huang, W Lee… - Laser & Photonics Reviews, 2021