Parasitic lasing in large aperture Ti:sapphire chirped pulse amplifier

• 作 者: 范祖涛 甘泽彪 梁晓燕 於亮红 李文启 郭震 袁晓龙 曹鹤 黄培 李儒新 徐至展
• 机 构: Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai Tech University
• 出 处: Chinese Optics Letters
• 发表日期: 2017年06期
• 关键词: sapphire amplifier lasing aperture evolutionary parasitic spontaneous repetition

We research some properties of parasitic lasing(PL) in the Ti:sapphire chirped pulse amplifier with the crystal diameter of 100 mm. The evolutionary process from the spontaneous emission to the PL and its influence on amplified output energy, spectrum, and beam profile are experimentally measured. The threshold of PL in the crystal is 22 J, and the output signal can still keep rising with the pump when the pump energy is below 38 J. The PL has no obvious impact on the output spectrum and beam profile besides the energy.

We research some properties of parasitic lasing (PL) in the Ti: sapphire chirped pulse amplifier with the crystal diameter of 100 mm. The evolutionary process from the spontaneous emission to the PL and its influence on the amplified output energy, spectrum, and beam profile are experimentally measured. The threshold of PL in the crystal is 22 J, and the output signal can still keep rising with the pump when the pump energy is below 38 J. The PL has no obvious impact on the output spectrum and beam profile besides the energy .