Lasing in photonic crystals based on dye-doped liquid crystal films

Tsung Hsien Lin, Yi Jan Chen, Chun Hui Wu, J. H. Liu, P. C. Yang, Andy Y.G. Fuh

Research output: Contribution to journalConference articlepeer-review


This letter examines a planar cholesteric cell (CLC) doped with a collocation of two laser dyes as a one-dimensional photonic crystal. Adding the photo-tunable chiral material-AzoB allows the CLC photonic crystal can be lased at the band edges of the photonic band gap with a tuning range of over 100nm. Tuning is performed by irradiating the chiral AzoB material with UV light so that it undergoes trans-cis isomerization in the CLC film. The tuning range is the visible region from 563nm to 667nm. Moreover, the tuning is reversible.

Original languageEnglish
Article number19
Pages (from-to)128-134
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2005 Aug 22
EventEmerging Liquid Crystal Technologies - San Jose, CA, United States
Duration: 2005 Jan 252005 Jan 27

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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