Lasing properties of a cholesteric liquid crystal containing aggregation-induced-emission material

Optics Express
Nan WangSailing He

Abstract

We demonstrate band edge lasing action from a cholesteric liquid crystal (CLC) containing an aggregation-induced-emission (AIE) dye as gain material. AIE materials do not suffer aggregation-caused quenching, have strong resistance to photobleaching, and can show large Stokes shift. The amplified spontaneous emission (ASE) and lasing emission of the dye-doped CLC cell have been characterized, the lasing threshold has been estimated, and its resistance to photobleaching has been measured. AIE materials with their unique properties are especially suitable for acting as gain materials in liquid crystal lasers where defect structures lower the threshold for nanoscale aggregation effects. Our studies have shown that such AIE-dye-doped CLC is capable of lasing action with unusually large Stokes shift at moderate threshold with strong resistance to photobleaching.

References

Nov 5, 2003·Chemical Communications : Chem Comm·Hsiu-Chih YehChin-Ti Chen
Jul 15, 2009·Chemical Communications : Chem Comm·Yuning HongBen Zhong Tang
Sep 22, 2010·Journal of the American Chemical Society·Yang LiuBen Zhong Tang
Jul 30, 2011·Chemical Society Reviews·Yuning HongBen Zhong Tang
Nov 29, 2012·Optics Express·Chun-Wei ChenTsung-Hsien Lin
May 23, 2014·Scientific Reports·James L BanalWallace W H Wong

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Citations

Aug 7, 2017·Journal of Polymer Science. Part A, Polymer Chemistry·C OrofinoP J Skabara
Jul 1, 2017·Chemistry : a European Journal·Steffen RiebeJens Voskuhl

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