title: Enhancing cholesteric liquid crystal laser performance using a cholesteric reflector.
abstract: A high performance dye-doped cholesteric liquid crystal (CLC) laser is demonstrated by incorporating a passive CLC reflector to the active cell. The polarization-conserved CLC reflector effectively increases the distributed feedback cavity length which, in turn, results in a significant enhancement in lasing efficiency and a dramatic reduction in beam divergence. The lasing characteristics are still dominated by the circularly polarized light with the same sense as the cholesteric helix.
authors.forename: Ying
authors.initials: Y
authors.lastname: Zhou
authors.forename: Yuhua
authors.initials: Y
authors.lastname: Huang
authors.forename: Shin-Tson
authors.initials: ST
authors.lastname: Wu