1.
Opt Lett
; 37(13): 2448-50, 2012 Jul 01.
Article
in English
| MEDLINE
| ID: mdl-22743417
ABSTRACT
We present a method for the linearization and minimization of interferometer cyclic error. We utilize a polynomial curve fitting and resampling algorithm to correct for nonlinear mirror displacement. In the frequency domain, this algorithm compresses cyclic error into a single-frequency component and enables the precise measurement of cyclic error in a noise-dominated environment. We have applied the technique to determine the cyclic error for a range of interferometer components. In addition, we have used these measurements to optimize interferometer configuration and performance such that we routinely achieve a cyclic error of â¼50 pm for our custom Glan-Laser interferometer and â¼100 pm for a commercial interferometer.