Author Affiliations
Abstract
1 National Laboratory on High Power Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
2 Shanghai Institute of Laser plasmas, Chinese Academy of Engineering Physics, Shanghai 201800, China
A new type of optical parametric chirped pulse amplifier is designed and analyzed for the amplification of pulse centered at 808 nm. A novel crystal, yttrium calcium oxyborate YCa4O(BO3)3 (YCOB), is utilized in the power amplification stage of optical parametric amplification (OPA). Noncollinear phase matching parameters in the xoz principle plane of YCOB, compared with those in BBO and DKDP, are analyzed by numerical simulation. The results show that YCOB rather than DKDP can be used in the power amplification stage of OPA to realize the amplification of chirped pulse to several joules with a gain bandwidth exceeding 100 nm. This can be used to gain a high intensity pulse of ~10 fs after the compressor.
非线性光学 光参量啁啾脉冲放大 超宽带增益 三硼酸氧钙钇 190.4410 Nonlinear optics, parametric processes 190.4970 Parametric oscillators and amplifiers 140.4480 Optical amplifiers Collection Of theses on high power laser and plasma physics
2011, 9(1): 101901
Author Affiliations
Abstract
1 National Laboratory on High Power Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
2 Shanghai Institute of Laser plasmas, Chinese Academy of Engineering Physics, Shanghai 201800, China
A new type of optical parametric chirped pulse amplifier is designed and analyzed for the amplification of pulse centered at 808 nm. A novel crystal, yttrium calcium oxyborate YCa4O(BO3)3 (YCOB), is utilized in the power amplification stage of optical parametric amplification (OPA). Noncollinear phase matching parameters in the xoz principle plane of YCOB, compared with those in BBO and DKDP, are analyzed by numerical simulation. The results show that YCOB rather than DKDP can be used in the power amplification stage of OPA to realize the amplification of chirped pulse to several joules with a gain bandwidth exceeding 100 nm. This can be used to gain a high intensity pulse of ~10 fs after the compressor.
非线性光学 光参量啁啾脉冲放大 超宽带增益 三硼酸氧钙钇 190.4410 Nonlinear optics, parametric processes 190.4970 Parametric oscillators and amplifiers 140.4480 Optical amplifiers Chinese Optics Letters
2011, 9(10): 101901
中国科学院上海光学精密机械研究所国家高功率激光物理实验室, 上海 201800
以中心波长为1053 nm的信号光及中心波长为532 nm的抽运光光参变放大过程为例，通过数值模拟，详细分析了三硼酸氧钙钇[YCa4O(BO3)3，YCOB]晶体XOY与XOZ主平面内，非共线相位匹配的匹配特点与增益特性。按照相位匹配技术主要参数定义要求，不经近似，通过数值计算，给出了最佳非共线角、相位匹配角、参量带宽、走离角、接收角和有效非线性系数与增益带宽。结果显示，YCOB晶体具有很大的增益带宽与较大的增益，较大的接收角和小的走离角；作为增益介质，不仅可以用于大能量高功率固体激光器，也可以用于几十飞秒量级超短脉冲激光系统。
非线性光学 光参变啁啾脉冲放大 非共线相位匹配 超宽带增益 三硼酸氧钙钇晶体
