7 September 2011 Slope efficiency characteristics of mode-hop driven tunable single-mode cholesteric liquid crystal laser
Author Affiliations +
Abstract
We report tunable single-mode lasing with an improved slope efficiency from a cholesteric liquid crystal (ChLC) cavity with a three-layered structure. The device consists of one photopolymerized ChLC layer with a wide reflection band, another ChLC layer with a notch reflection band and a Rhodamine-6G-doped ionic liquid layer acting as the gain medium. Single-mode lasing can be obtained in this device structure because the ChLC layer with the notch reflection band strongly reflects only one of the Fabry-Perot cavity modes. Tuning of the lasing wavelength is achieved by tuning the reflection band of the notch ChLC. The device showed a maximum slope efficiency of 16%, which was found to be approximately 1.5 times larger than that of ordinary ChLC lasers doped with the pyrromethene 597 laser dye.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yo Inoue, Yo Inoue, Hiroyuki Yoshida, Hiroyuki Yoshida, Kenta Inoue, Kenta Inoue, Yusuke Shiozaki, Yusuke Shiozaki, Hitoshi Kubo, Hitoshi Kubo, Akihiko Fujii, Akihiko Fujii, Masanori Ozaki, Masanori Ozaki, } "Slope efficiency characteristics of mode-hop driven tunable single-mode cholesteric liquid crystal laser", Proc. SPIE 8114, Liquid Crystals XV, 811415 (7 September 2011); doi: 10.1117/12.893208; https://doi.org/10.1117/12.893208
PROCEEDINGS
9 PAGES


SHARE
Back to Top