【研究成果】2011
研究成果24
Tunable Lasing from a Cholesteric Liquid Crystal Film Embedded with a Liquid Crystal Nanopore Network
Yo Inoue, Hiroyuki Yoshida, Kenta Inoue, Yusuke Shiozaki, Hitoshi Kubo, Akihiko Fujii, and Masanori Ozaki
Advanced Materials Volume 23, 5498, published online:14 NOV 2011
Wavelength tuning was demonstrated in a cholesteric liquid crystal based on refractive index modulation. A simple fabrication method in which a network of nano pores is formed in a photo polymerized ChLC film was presented, and wavelength-swept lasing from a single free standing film was demonstrated. These nano composite films are potentially useful to realize ultra compact wavelength swept lasers.
FE-SEM image taken after rising the sample with supercritical CO2.
(a) Emission spectra from the cell applied with a sinusoidal electric field (160 V/μm, 600.0 Hz) with various phase shiftings, (b) slope efficiency characteristics of the laser with and without electric field, and (c) demonstration of wavelength-swept lasing from the ChLC film.
