Open AccessSurface plasmon-enhanced lasing in dye-doped cholesteric liquid crystals
Author(s) -
Cheng-Yu Shih,
H. C. Yeh
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.020698
Subject(s) - materials science , lasing threshold , surface plasmon , surface plasmon resonance , dye laser , plasmon , optics , optoelectronics , localized surface plasmon , surface plasmon polariton , excitation , wavelength , doping , laser , nanoparticle , nanotechnology , physics , electrical engineering , engineering
This study shows the results of a photonic band-edge laser using dye-doped cholesteric liquid crystals (CLCs) combined with silver (Ag) nanoparticles. When the Ag nanoparticle surface plasmon resonance wavelength matched the excitation source wavelength, the large optical fields provided by surface plasmons increased the fluorescence of dye molecules by enhancing the molecular excitation rate, achieving a low lasing threshold and high pumping efficiency.