Controllable random lasers based on two-dimensional random gain systems with nematic liquid crystals
作者： Yuan Wan , Yang Yang , Zhaozhong Meng
DOI: 10.1007/S12648-021-02109-X
关键词: Optics 、 Liquid crystal 、 Finite-difference time-domain method 、 Random laser 、 Beam (structure) 、 Scattering 、 Laser 、 Filling fraction 、 Materials science 、 Polarization (waves)
摘要: Controllable random lasers based on two-dimensional (2D) gain systems with nematic liquid crystals are investigated by using the finite-difference time-domain (FDTD) methods. The dependence of scattering strength is studied. results show that laser characteristics including pump threshold, emission intensity and number modes can be controlled varying rates, filling fraction crystals, included angle between polarization direction beam director crystals. To achieve optimal lasers, should parallel to
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