Reduced-Threshold Emission of Capillary Filled by Doped-Dye Cholesteric Liquid Crystals With Photo-Alignment Polyimide Films

Autor: Yue-Lan Lu, Xiang-Bao Yin, Zuo-Ren Xiong, Yue Yang, Wei-Min Sun, Yong-Jun Liu
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: IEEE Photonics Journal, Vol 10, Iss 1, Pp 1-7 (2018)
Druh dokumentu: article
ISSN: 1943-0655
DOI: 10.1109/JPHOT.2018.2795106
Popis: A microcavity laser is reported using dye-doped cholesteric liquid crystals (CLCs) filled in a glass capillary with photo-alignment polyimide films. This laser runs based on the properties that a CLC has a refractive index much higher than that of glass, so whispering-gallery-mode (WGM) laser and distributed-feedback-mode lasers are included in the emission spectrum. We obtain a low threshold energy of 4.5 μJ · pulse-1 · mm-2, establish the shift of 3.04 nm of the WGMs in the temperature range 43-48 °C, and investigate electric field tunability.
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