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How doping a cholesteric liquid crystal with polymeric dye improves an order parameter and makes possible low threshold lasing.
- Source :
-
Journal of Applied Physics . 7/1/2003, Vol. 94 Issue 1, p279. 5p. 1 Black and White Photograph, 5 Diagrams, 5 Graphs. - Publication Year :
- 2003
-
Abstract
- Lasing conditions in a dye-doped cholesteric liquid crystal (ChLC) have been studied in view of optical modes for the light propagating in ChLCs using a polymeric dye with the transition dipole moment parallel to the local director of the ChLC host. We found that lasing always occurs at the lower-energy edge of the photonic gap. This is because that the optical eigen mode at the lower-energy gap is linearly polarized parallel to the director, while it is perpendicular at the higher-energy gap. Because of this well-defined lasing condition, low-threshold lasing was successfully achieved. [ABSTRACT FROM AUTHOR]
- Subjects :
- *LIQUID crystals
*PHOTONICS
*CRYSTALS
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 94
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 10071045
- Full Text :
- https://doi.org/10.1063/1.1578534