Open AccessA Gires-Tournois mirror for dispersion compensation in the Ti-sapphire laser system
Author(s) -
Qing Zhang,
Peng Ye,
Zhiyi Wei,
Qun Ma,
Shuna Zhang,
Yueguang Zhang,
Weiyong Yuan,
Weidong Shen,
Zhenyue Luo,
Xü Liu
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.027804
Subject(s) - femtosecond , materials science , sapphire , optics , laser , dispersion (optics) , group delay dispersion , ti:sapphire laser , interferometry , optoelectronics , physics , optical fiber , fiber optic sensor , dispersion shifted fiber
A Gires-Tournois(GT) mirror with a group delay dispersion (GDD) of -60 fs2 in one reflection was designed according to the requirement of dispersion compensation in the Ti-sapphire femtosecond laser system. It was manufactured by ion assisted deposition combined with the optical monitoring in transmission. The reflectance of the mirror was measured by a spectrophometer working in the range from 650 nm to 950 nm with a resolution of 1 nm. The results were consistent with the design. Furthermore, a home-made white light interferometry system was employed to test the reflection GDD and the result also agreed well with the design. The experimental GDD oscillation was less than ± 20 fs2. The GT mirror was applied in the Ti-sapphire femtosecond laser system and a good clamping result was obtained. Finally a 29 fs ultra-short pulse was acquired.