Newly designed multilayer thin film mirror for dispersion compensation in Ti:sapphire femtosecond lasers

作者:Chunyan Liao Jianda Shao Jianbing Huang Zhengxiu Fan and Hongbo He Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai Graduate School of the Chinese Academy of Sciences Beijing
来源:Chinese Optics Letters, 2005, (02): 122-124.

摘要

<正>There are two different effects to generate group delay dispersion by multilayer thin film mirrors: chirper effect and Gires-Tournois effect. Both effects are employed to introduce desired dispersion in the designed mirror. Thus the designed mirror provides large dispersion throughout broad waveband. Such mirror can be used for dispersion compensation in Ti:sapphire femtosecond lasers. Most group delay dispersion of a 5-mm Ti:sapphire crystal can be compensated perfectly with only four bounces of the designed mirror.