1.
Opt Lett
; 15(21): 1239-41, 1990 Nov 01.
Article
in English
| MEDLINE
| ID: mdl-19771053
ABSTRACT
We report the measurements of picometer vibration amplitudes produced by a piezo mirror in an interferometric setup, using a GaAs:Cr photoconductive device. The moving light fringes (gratings) induce in this new detector periodic photocurrents characterized by efficient suppression of the low-frequency drifts of the working point and low sensitivity to the amplitude laser noise. The optimum operation conditions of this system are also shown.