1.
Opt Lett
; 32(3): 280-2, 2007 Feb 01.
Article
in English
| MEDLINE
| ID: mdl-17215945
ABSTRACT
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.