DocumentCode :
67194
Title :
Efficient CW Dual-Wavelength and Passively 
-Switched Tm:LuAG Lasers
Author :
Tianli Feng ; Kejian Yang ; Shengzhi Zhao ; Jia Zhao ; Wenchao Qiao ; Tao Li ; Lihe Zheng ; Jun Xu ; Qingguo Wang ; Xiaodong Xu ; Liangbi Su ; Yonggang Wang
Author_Institution :
Sch. of Inf. Sci. & Eng., Shandong Univ., Jinan, China
Volume :
27
Issue :
1
fYear :
2015
fDate :
Jan.1, 1 2015
Firstpage :
7
Lastpage :
10
Abstract :
Efficient diode-pumped Tm:LuAG lasers operating in continuous wave, dual-wavelength,and passive Q-switching regimes have been demonstrated. A maximum output power of 4.42 W with a beam quality of M2 ≤1.45 at 2021.2 nm was obtained, corresponding to a slope efficiency of 49.5%. Using a birefringent quartz plate, the Tm:LuAG laser emitted the highest output power of 2.3 W at dual-wavelength of 2022 and 2030 nm. With a SWCNT-SA employed as saturable absorber, passively Q-switched Tm:LuAG laser was realized, which generated the shortest pulses of 405 ns at 2021.6 nm and a maximum single pulse energy of 40.6 μJ at 2019.7 nm.
Keywords :
Q-switching; carbon nanotubes; high-speed optical techniques; laser beams; nanophotonics; optical pumping; optical saturable absorption; solid lasers; thulium; LuAG:Tm; SWCNT-SA; beam quality; birefringent quartz plate; continuous wave operation; diode-pumped lasers; efficiency 49.5 percent; efficient CW dual-wavelength lasers; output power; passively Q-switched Tm:LuAG lasers; power 2.3 W; power 4.42 W; saturable absorber; short pulse generation; single pulse energy; slope efficiency; time 405 ns; wavelength 2019.7 nm to 2030 nm; Crystals; Laser excitation; Measurement by laser beam; Power generation; Pump lasers; Semiconductor lasers; Q-switched; Rare-earth-doped materials; Solid-state;
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/LPT.2014.2357800
Filename :
6897984
Link To Document :
