LOW-THRESHOLD LASING AT THE EDGE OF A PHOTONIC STOP BAND IN CHOLESTERIC LIQUID-CRYSTALS

Authors
KOPP VI FAN B VITHANA HKM GENACK AZ
Citation
Vi. Kopp et al., LOW-THRESHOLD LASING AT THE EDGE OF A PHOTONIC STOP BAND IN CHOLESTERIC LIQUID-CRYSTALS, Optics letters, 23(21), 1998, pp. 1707-1709
Citations number
16
Categorie Soggetti
Optics
Journal title
Optics letters → ACNP
ISSN journal
01469592
Volume
23
Issue
21
Year of publication
1998
Pages
1707 - 1709
Database
ISI
SICI code
0146-9592(1998)23:21<1707:LLATEO>2.0.ZU;2-P
Abstract
Low-threshold lasing is observed at the edge of the stop band of a one -dimensional structure-a dye-doped cholesteric liquid-crystal film. Th e mode closest to the edge has the lowest lasing threshold. The rates of spontaneous and stimulated emission are suppressed within the stop band and enhanced at the band edge. The ratio of right to left circula rly polarized spontaneous emission is in good agreement with calculate d density of photon states. (C) 1998 Optical Society of America.