Continuous wave and passively Q-switched Nd:YAG laser with a multisegmented crystal diode-pumped at 885 nm

被引：5
|
作者：
Evangelatos, C. [1 ]
Bakopoulos, P. [2 ]
Tsaknakis, G. [1 ]
Papadopoulos, D. [3 ]
Avdikos, G. [4 ]
Papayannis, A. [1 ]
Tzeremes, G. [5 ]
机构：
[1] Natl Tech Univ Athens, Dept Phys, Laser Remote Sensing Unit, Zografos 15780, Greece
[2] Natl Tech Univ Athens, Sch Elect & Comp Engn, Photon Commun Res Lab, Zografos 15780, Greece
[3] Univ Ioannina, GR-45110 Ioannina, Greece
[4] Raymetrics SA, Peania 19002, Greece
[5] Estec, European Space Agcy, Noordwijk, Netherlands
来源：
APPLIED OPTICS | 2013年 / 52卷 / 36期
关键词：
ND-YAG LASER; RODS;
D O I：
10.1364/AO.52.008795
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Mitigation of thermal effects in a 1064 nm Nd:YAG laser is demonstrated through the combination of a multisegmented crystal rod and upper laser level pumping by diode at 885 nm toward optimizing the generated beam profile. Continuous wave (cw) and passively Q-switched operation is demonstrated obtaining 7.5 W and 2 mJ at 100 Hz, respectively, with excellent beam quality. Comparison with a conventional uniform Nd: YAG rod reveals improvements of up to 64% in optical conversion efficiency and 67% in output power for retaining the beam quality. Thermal-lensing measurements validate the improved thermal management in the multisegmented crystal in conjunction with M-square values better than 1.3. (C) 2013 Optical Society of America
引用
收藏
页码：8795 / 8801
页数：7
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