Wave-front correction of femtosecond terawatt lasers by deformable mirrors.
Wave-front correction of femtosecond terawatt lasers by deformable mirrors.
复制标题
通过可变形镜对飞秒太瓦激光器进行波前校正。
DOI：
10.1364/ol.23.001043
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发表时间：
1998
期刊：
影响因子：
3.6
通讯作者：
G. Vdovin
中科院分区：
文献类型：
--
作者：
F. Druon;G. Chériaux;J. Faure;J. Nees;M. Nantel;A. Maksimchuk;G. Mourou;J. Chanteloup;G. Vdovin
据我们所知，第一次利用带在线单次三波横向剪切干涉仪诊断的可变形镜实现了飞秒激光束的波前校正和焦斑改善。对由三阶非线性效应引起的100-fs激光波前畸变进行了补偿。该技术允许在不需要反馈回路的直接过程中进行校正，也用于10-TW的Ti：蓝宝石- nd：磷酸盐玻璃激光器，其速度为亚皮秒。我们还证明，有一个焦点光斑接近衍射极限并不构成一个良好的标准，在峰强度方面的激光质量。
Wave-front correction and focal spot improvement of femtosecond laser beams have been achieved, for the first time to our knowledge, with a deformable mirror with an on-line single-shot three-wave lateral shearing interferometer diagnostic. Wave-front distortions of a 100-fs laser that are due to third-order nonlinear effects have been compensated for. This technique, which permits correction in a straightforward process that requires no feedback loop, is also used on a 10-TW Ti:sapphire-Nd:phosphate glass laser in the subpicosecond regime. We also demonstrate that having a focal spot close to the diffraction limit does not constitute a good criterion for the quality of the laser in terms of peak intensity.