Low threshold and high Q-factor lasing in topologically directed assemblies of blue-phase liquid crystal microspheres

Sumanyu Chauhan; Souptik Mukherjee; Andrii Varanytsia; Chien Tsung Hou; Lu Zou; Liang-Chy Chien

doi:10.1117/12.2652236

14 March 2023 Low threshold and high Q-factor lasing in topologically directed assemblies of blue-phase liquid crystal microspheres

Sumanyu Chauhan, Souptik Mukherjee, Andrii Varanytsia, Chien Tsung Hou, Lu Zou, Liang-Chy Chien

Author Affiliations +

Proceedings Volume 12442, Emerging Liquid Crystal Technologies XVIII; 1244209 (2023) https://doi.org/10.1117/12.2652236
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

A strategy of efficient laser emission with resonant feedback based on a microemulsion comprising of a Blue-Phase Liquid Crystal (BPLC), laser dye and block copolymer is presented here. BPLCs are produced and confined in microspheres with a microfluidic apparatus. These spatially assembled dye doped BPLC microdroplets are used to generate laser light. The topologically directed assemblies of BPLC microspheres with specific shape and symmetry are essential for reducing threshold and increasing Q-factor of laser emission. These results provide new avenues for a wide range of photonic applications.

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Citation Download Citation

Sumanyu Chauhan, Souptik Mukherjee, Andrii Varanytsia, Chien Tsung Hou, Lu Zou, and Liang-Chy Chien "Low threshold and high Q-factor lasing in topologically directed assemblies of blue-phase liquid crystal microspheres", Proc. SPIE 12442, Emerging Liquid Crystal Technologies XVIII, 1244209 (14 March 2023); https://doi.org/10.1117/12.2652236

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