Eliminating the longitudinal piston error between tiled gratings by angle tuning.
In a tiled-grating system, it is difficult to make two tiled gratings strictly coplanar. We propose and demonstrate for the first time, as far as we know, a simple method by which the longitudinal piston error between two tiled gratings can be reduced below lambda/10, close to the influence of the environmental factors. The alignment precision of the method increases with the tiled-grating system's stability to environmental factors.
Zuo
Yanlei
Y
Research Center of Laser Fusion, Chinese Academy of Engineering Physics, Mianyang, Sichuan 621900, China. zuoyanlei@tsinghua.org.cn
Wei
Xiaofeng
X
Wang
Xiao
X
Zhu
Qihua
Q
Ren
Rui
R
Huang
Zheng
Z
Liu
Hongjie
H
Ying
Chuntong
C