Abstract
Controllable random lasers based on two-dimensional (2D) random gain systems with nematic liquid crystals are investigated by using the finite-difference time-domain (FDTD) methods. The dependence of random lasers on the scattering strength of nematic liquid crystals is studied. The results show that the random laser characteristics including the pump threshold, the emission intensity and the number of laser modes can be controlled by varying the pump rates, the filling fraction of nematic liquid crystals, and the included angle between the polarization direction of pump beam and the director of nematic liquid crystals. To achieve the optimal random lasers, the polarization direction of pump beam should be parallel to the director of nematic liquid crystals.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
