3C10 Electro-tuning of Laser Action Induced by Holographic Excitation Using Nematic Liquid Crystal as a Waveguide Core Layer

Abstract

Optically pumped distributed feedback (DFB) lasing has been demonstrated in a dye-doped nematic liquid crystal (NLC) waveguide by holographic excitation. The excitation was performed by two-beam interference using Lloyd mirror configuration. With an applied electric field, continuous tuning of the lasing wavelength was realized due to the change of the effective refractive index of the NLC core layer caused by the reorientation of NLC molecules.