Title :
Efficient Continuous-Wave 1053-nm Nd:GYSGG Laser With Passively Q-Switched Dual-Wavelength Operation for Terahertz Generation
Author :
Kai Zhong ; Chongling Sun ; Jianquan Yao ; Degang Xu ; Xinyi Xie ; Xiaolong Cao ; Qingli Zhang ; Jianqiao Luo ; Dunlu Sun ; Shaotang Yin
Author_Institution :
Coll. of Precision Instrum. & Opto-Electron. Eng., Tianjin Univ., Tianjin, China
Abstract :
Research on an efficient continuous-wave Nd:GYSGG laser at 1053 nm with excellent stability is demonstrated. The maximum output power is 4.17 W, corresponding to the conversion efficiency of 33.9% and the slope efficiency of 42.92%. Using a Cr:YAG absorber, pulsed dual-wavelength operation at 1053 and 1058.4 nm is obtained, of which the maximum single pulse energy and peak power are 172.1 μJ and 26.1 kW, respectively, when the pulse width is 6.6 ns and the repetition rate is 4.3 kHz. A polarization property is observed, owing to the anisotropy of Cr:YAG. This stably Q-switched dual-wavelength laser is a good pump source for the generation of a terahertz wave at 1.53 THz.
Keywords :
Q-switching; gadolinium compounds; laser stability; laser transitions; light polarisation; microwave photonics; neodymium; optical pumping; scandium compounds; solid lasers; terahertz wave generation; yttrium compounds; Gd3xY3(1-x)Sc2Ga3(1+δ)O12:Nd; YAG:Cr; conversion efficiency; efficiency 33.9 percent; efficiency 42.92 percent; efficient continuous-wave laser; energy 172.1 muJ; frequency 1.53 THz; laser stability; laser transitions; maximum output power; maximum single pulse energy; passively Q-switched dual-wavelength operation; peak power; polarization property; power 26.1 kW; power 4.17 W; pulsed dual-wavelength operation; pump source; slope efficiency; terahertz wave generation; wavelength 1053 nm; wavelength 1058.4 nm; Cavity resonators; Crystals; Educational institutions; Laser excitation; Pump lasers; Semiconductor lasers; Sun; Diode pumped laser; Nd:GYSGG; passively Q-switched; terahertz;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2013.2246545
