Share with Facebook
Tweet This
Post on reddit
Share with LinkedIn
Add to CiteULike
Add to Mendeley
Add to BibSonomy
Abstract
We report on experimental investigations of the lasing effect in novel chiral liquid crystal (CLC) systems with a deformed lying helix (DLH). The lasing is studied for both odd- and even-order field-induced stop-bands, which are characteristic exclusively of the DLH state. The DLH state is achieved in special CLC cells with periodic boundary conditions, when the surface alignment is flipped between planar and vertical states. The alignment surfaces are prepared using focused ion-beam lithography. In an electric field, such CLC systems undergo an orientational transition, when the initial Grandjean-plane texture with the helix axis perpendicular to the CLC layer is transformed into the DLH state with the helix axis oriented in the plane of the layer. Due to field-induced strong deformation, the DLH system is characterized by a set of photonic stop-bands with a fine spectral structure; namely, on these fine-structured sub-bands, we have observed and studied the low-threshold lasing effect.
© 2020 Optical Society of America
Full Article | PDF ArticleMore Like This
Fengfeng Yao, Rongqu Hong, Boao Zhang, Yanbo Pei, Chunfeng Hou, and Xiudong Sun
Opt. Lett. 45(22) 6118-6121 (2020)
Anil K. Thakur, Sarabjot Kaur, Sukhwant S. Bawa, and Ashok M. Biradar
Appl. Opt. 43(30) 5614-5617 (2004)
David Marco, Asticio Vargas, María del Mar Sánchez-López, and Ignacio Moreno
Opt. Lett. 45(16) 4480-4483 (2020)