Title :
Dual-Wavelength Passively Q-Switched Nd,Mg:LiTaO3 Laser With a Monolayer Graphene as Saturable Absorber
Author :
Hongwei Chu ; Shengzhi Zhao ; Tao Li ; Kejian Yang ; Guiqiu Li ; Dechun Li ; Jia Zhao ; Wenchao Qiao ; Jianqiu Xu ; Yin Hang
Author_Institution :
Sch. of Sci. Inf. & Eng., Shandong Univ., Jinan, China
Abstract :
Compact LD pumped, CW, and passively Q-switched Nd,Mg:LiTaO3 lasers with a stable, synchronous dual-wavelength operation near 1082 and 1092 nm were demonstrated for the first time. Under an incident pump power of 7.69 W, a maximum CW output power of 464 mW was obtained, corresponding to a slope efficiency of 7.6%. By using a monolayer graphene as saturable absorber, the steadily Q-switched Nd,Mg:LiTaO3 laser with dual-wavelength oscillation was achieved. The maximum output power of the Q-switched laser was 365 mW with a repetition rate of 133 kHz. The minimum pulse duration was measured to be 176 ns. The corresponding maximum pulse energy and peak power were 2.75 μJ and 15.7 W, respectively.
Keywords :
Q-switching; graphene; lithium compounds; magnesium; neodymium; optical pumping; optical saturable absorption; solid lasers; C; LiTaO3:Nd,Mg; dual-wavelength oscillation; dual-wavelength passively Q-switched laser; frequency 133 kHz; incident pump power; maximum CW output power; minimum pulse duration; monolayer graphene; power 7.69 W; pulse energy; repetition rate; saturable absorber; slope efficiency; Educational institutions; Graphene; Laser excitation; Laser theory; Measurement by laser beam; Optics; Pump lasers; Mg:LiTaO3 crystal; Nd; monolayer graphene saturable absorber; passively Q-switched laser;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2014.2329938
