山东科技大学 理学院, 青岛市太赫兹技术重点实验室, 山东 青岛 266510
基于单轴晶体中三波互作用的共线相位匹配技术, 采用CO2激光器泵浦非线性晶体AgGaSe2, 数值计算出在oee类和oeo类相位匹配条件下, 差频产生太赫兹波的相位匹配角、走离角、允许角和有效非线性系数。计算结果表明:两类相位匹配太赫兹波可调谐的范围都非常宽, 而且走离角都在1°以下, 允许角足够大。在绝大部分太赫兹波区域, oee类匹配有效非线性系数远大于oeo类匹配, 实验中适合采用oee类相位匹配方式。
太赫兹波 AgGaSe2晶体 差频产生 相位匹配 可调谐 terahertz wave AgGaSe2 crystal difference-frequency generation phase-matching tunable 强激光与粒子束
2010, 22(11): 2653
Author Affiliations
Abstract
1 Modern Optical Laboratory, Department of Physics, Shandong Normal University, Ji'nan 250014
2 Institute of Physics, Chinese Academy of Science, Beijing 100080
In this paper, we report a high peak power passively Q-switched laser-diode-end-pumped Nd:YVO4/Cr^(4+):YAG laser polarized along the C axis, generating 4.23-W average power and 18-kW peak power (144-μJ pulse power) with 8.0-ns time duration (29.4-kHz repetition rate) at 1064 nm while the pump power is 21.2 W.
140.0140 lasers and laser optics Chinese Optics Letters
2004, 2(10): 10590
