Integratable pulsed 2-μm laser with Tm, Mg:LiNbO3 crystal and single-walled carbon nanotube saturable absorber. (January 2015)

• Record Type: Journal Article
• Authors: Zhang, Shuaiyi; Li, Hongqiang; Zhao, Qiuling; Lv, Hao; Wang, Xia; Kong, Weijin; Zhang, Peixiong; Xu, Jianqiu; Hang, Yin
• Is Part Of: Optics & laser technology. Volume 65(2015)
• Page Start: 36
• Page End: 38
• Publication Date: 2015-01
• Subjects: Diode-pumped lasers -- Ferroelectric material -- Q-switched; Optics -- Periodicals; Lasers -- Periodicals; Electronic journals; 621.366
• DOI: 10.1016/j.optlastec.2014.06.015
• Languages: English
• ISSNs: 0030-3992

Abstract

Abstract: We demonstrated an integratable passively Q-switched (PQS) Tm, Mg:LiNbO3 laser with a single-walled carbon nanotube saturable absorber (SWCNT-SA) for the first time. Its laser characteristics were investigated with different output couplers. At the pump power of 9.5 W, the maximum output power of 0.93 W around 1963 nm was obtained with the output transmission of 1%. The optical conversion efficiency is 9.79%, corresponding to a slope efficiency of 17.4%. For pulsed operation, a shortest pulse width attained was 640 ns, with the pulse repetition frequency of 44.6 kHz, and the single pulse energy was 12.6 μJ. Highlights: We demonstrated a pulsed laser operation of Tm, Mg:LiNbO3 for the first time. The technique is a promising routine to the 2-μm integratable laser devices. The integratable single-walled carbon nanotube saturable absorber was used. A minimum pulse width of 640 ns at 1950 nm was obtained.