Title :
The effect of incident angle of pumping light to cholesteric liquid crystal
Author :
Xiangbao Yin ; Yongjun Liu ; Lingli Zhang
Author_Institution :
Harbin Eng. Univ., Harbin, China
Abstract :
Optical characteristics research was carried out for the tunable laser of dye doped cholesteric liquid crystal. Based on the characteristic that pitch of the dye doped cholesteric liquid crystal varyed with the incident angle of pumping light, emission characteristics of the tunable laser of dye doped cholesteric liquid crystal were studied. Taking the mixture of laser dye and nematic liquid crystal and left-handed chiral additive as the layer of gain medium, wavelength tunable laser was prepared. The laser sample pumped by 532nm Nd : YAG pulse laser has the following optical characteristics: the wavelength of the emission laser was tuning from 647.38 to 658.11nm with the incident angle of pumping light, reaching 10.73nm.
Keywords :
cholesteric liquid crystals; laser tuning; nematic liquid crystals; neodymium; optical materials; optical pumping; solid lasers; YAG:Nd; dye doped cholesteric liquid crystal; emission characteristics; gain medium; incident angle; left-handed chiral additive; nematic liquid crystal; pumping light; tunable laser; wavelength 532 nm to 658.11 nm; wavelength tunable laser; Fiber lasers; Laser excitation; Laser theory; Laser tuning; Pump lasers; Vertical cavity surface emitting lasers; cholesteric liquid crystal; incident angle; tunable laser;
Conference_Titel :
Optoelectronics and Microelectronics (ICOM), 2013 International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4799-1214-8
DOI :
10.1109/ICoOM.2013.6626493
