Presentation Information
[17a-M_B104-5]Lasing in Liquid Crystalline Shells
〇Yoshiaki Uchida1 (1.Univ. Osaka)
Keywords:
liquid crystal,emulsion,laser
Cholesteric liquid crystal (CLC) phases possess a helical superstructure of molecular orientation. When the helical pitch is comparable to visible light wavelengths, the CLC phase functions as a one-dimensional photonic crystal. Fabricating a CLC shell with a horizontally anchoring interface aligns the helical axis radially, transforming it into a three-dimensional omnidirectional laser resonator, similar to a CLC droplet. This presentation summarizes known characteristics of laser oscillation in CLC shells and reports on the concentration of dye at the capsule center and its effect on the laser threshold, achieved by expelling water from the core to the outer aqueous phase using osmotic pressure differences.