摘要
为了进一步研究Nd∶YAG陶瓷激光器的红光波段,研制了一台重复频率为1 000 Hz的670 nm电光调QNd∶YAG陶瓷激光器.采用三个激光二极管列阵侧面抽运掺杂浓度为1.1at%、尺寸为Φ3×50 mm2的Nd∶YAG陶瓷晶体,根据实验测量的陶瓷晶体热透镜焦距,优化设计了折叠腔的各个参量,并对陶瓷晶体及倍频晶体热焦距对晶体内光斑半径的影响进行了分析.采用LN晶体电光调Q、KTP晶体Ⅱ类匹配腔内倍频,实现了670 nm的激光输出.当单脉冲抽运能量为144 mJ时,获得了能量为1.48 mJ,脉冲宽度为35 ns的红光输出,总的光-光转换效率为1.03%.
To further investigate the red band of Nd∶YAG ceramic laser,an electro-optical Q-switched ceramic laser at the wavelength of 670 nm was studied.The Nd∶YAG ceramic crystal with 1.1at% Nd doping and dimensions of Φ3×50 mm2 was side-pumped by three laser diodes positioned with 120° respectively.The folding cavity parameters based on the ceramic thermal focal length were designed.The influences of thermal focal length in ceramic crystal and frequency crystal on spot radius were discussed.The LN crystal to electro-optical Q-switched and KTP crystal typeⅡphase matching for intracavity frequency-doubling were used to realize the laser.Under repetition rate of 1 000 Hz and single pulse pumped energy of 144 mJ,the output energy of 1.48 mJ and pulse width of 35 ns were obtained at 670 nm,and the optic-optic efficiency was 1.03%.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2011年第1期83-86,共4页
Acta Photonica Sinica
关键词
激光器
Nd∶YAG陶瓷红光激光器
腔内倍频
电光调Q
Laser
Nd∶YAG ceramic red laser
Intracavity frequency-doubling
Electro-optical Q-switching
