High-Stability High-Energy Picosecond Optical Parametric Chirped Pulse Amplifier as a Preamplifier in Nd：Glass Petawatt System for Contrast Enhancement

作     者：黄庭瑞 潘雪 张鹏 王江峰 欧阳小平 李学春 

作者机构：National Laboratory on High Power Laser and Physics Shanghai 201800 Key Laboratory of High Power Laser and Physics Shanghai Institute of Optics and fine Mechanics Chinese Academy of Science Shanghai 201800 University of Chinese Academy of Sciences Beijing 100049 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2017年第34卷第6期

页      面：53-57页

核心收录：

学科分类：080902[工学-电路与系统] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 11604350 and 61405211 

主　　题：High-Stability High-Energy Picosecond Optical Parametric Chirped Pulse Amplifier as a Preamplifier in Nd:Glass Petawatt System for Contrast Enhancement length Nd 

摘      要：We demonstrate a novel picosecond optical parametric preamplification to generate high-stability, high-energy and high-contrast seed pulses. The 5ps seed pulse is amplified from 60pJ to 300μJ with an 8.6ps/ 3mJ pump laser in a signal stage of short pulse non-collinear optical parametric chirped pulse amplification. The total gain is more than 106 and the rms energy stability is under 1.35%. The contrast ratio is higher than 10s within a scale of 20ps before the main pulse. Consequently, the improvement factor of the signal contrast is approximately equal to the gain 106 outside the pump window.