Incident angle and polarization effects on the dye-doped cholesteric liquid crystal laser
Abbreviated Journal Title
photonic crystal laser; photonic bandgap; cholesteric liquid crystal; DISPLAYS; EMISSION; Optics
Polarization effect of the pulsed pumping laser on the lasing characteristics of the dye-doped right-handed cholesteric liquid crystal (CLC) is studied at different incident angles. At a small incident angle (<18 degrees), the CLC laser performance is independent of the polarization state of the pumping laser. As the incident angle exceeds 18 degrees, the CLC laser emission strongly depends on the polarization state of the pumping laser. As the incident angle increases, the lasing efficiency of the CLC laser is dramatically decreased for those excited by the right-handed circularly polarized or linearly polarized laser, but barely affected by the left-handed circularly polarized laser. As the incident angle exceeds similar to 31 degrees, lasing phenomenon diminishes under the excitation of the right-handed circularly polarized laser. The lasing threshold pumped by the linearly polarized laser is similar to 2x higher than that pumped by the left-handed circularly polarized laser. (C) 2005 Elsevier B.V. All rights reserved.
"Incident angle and polarization effects on the dye-doped cholesteric liquid crystal laser" (2006). Faculty Bibliography 2000s. 6239.