Comparative performance of passively Q-switched diode-pumped Yb3+-doped tungstate and garnet lasers using Cr4+:YAG saturable absorber

被引:12
作者
Kalisky, Yehoshua [1 ]
Kalisky, Ofra
Rachum, Uzi
Boulon, Georges
Brenier, Alain
机构
[1] Nucl Res Ctr Negev, Dept Chem, IL-89140 Beer Sheva, Israel
[2] Jerusalem Coll Technol, IL-91160 Jerusalem, Israel
[3] Ben Gurion Univ Negev, Dept Elect & Comp Engn, IL-84105 Beer Sheva, Israel
[4] Univ Lyon 1, LPCML, Lab Physicochim Mat Luminescents, LPCML, F-69622 Villeurbanne, France
关键词
diode-pumped lasers; passive Q-switching; Yb : GGG; Yb : YAG; Yb : KYW laser;
D O I
10.1109/JSTQE.2007.896084
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We investigated the continuous wave (CW) free-running and repetitive modulation in the kilohertz frequency domain of a passively Q-switched diode-pumped Yb:YAG, Yb:GGG, and Yb:KYW lasers by using Cr4+ NAG as a saturable absorber. The results presented in this paper are focused on the design of a passively Q-switched Yb-doped garnets or Yb-doped tungstates microlasers. The free-running performance of Yb:YAG, Yb:GGG, Yb:KGW, and Yb:KYW were characterized, and experimental parameters such as gain and loss were evaluated. We carried out a fit between our experimental results and an existing numerical model, which relates the experimental and the physical parameters of the ytterbium diode-pumped system to the minimal threshold pumping power. The best performance among the laser crystals was obtained for Yb:YAG laser. A maximum peak power of approximate to 4.5 kW at an average output power of 1.32 W was extracted with an extraction efficiency of approximate to 25 %.
引用
收藏
页码:502 / 510
页数:9
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