Spatially separated heterodyne grating interferometer for eliminating periodic nonlinear errors | Zendy

Xing Xu | Zendy; Di Chang | Zendy; Pengcheng Hu | Zendy; Jiubin Tan | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Spatially separated heterodyne grating interferometer for eliminating periodic nonlinear errors

Author(s) -

Xing Xu,

Di Chang,

Pengcheng Hu,

Jiubin Tan

Publication year - 2017

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.25.031384

Subject(s) - optics , grating , astronomical interferometer , heterodyne (poetry) , interferometry , nonlinear system , physics , frequency domain , heterodyne detection , diffraction grating , spatial frequency , laser , acoustics , computer science , quantum mechanics , computer vision

Periodic nonlinear errors caused by frequency mixing are serious obstacles for increasing the resolution of heterodyne grating interferometers. To eliminate the periodic nonlinear errors, a spatially separated heterodyne grating interferometer is proposed in this study. Two modulated beams with different frequencies are transferred respectively by two fibers, which form a spatially separated construction. A couple of comparison experiments in both time domain and frequency domain are designed and conducted. The results of the frequency-spectrum analysis experiment showed that the periodic nonlinear errors were no larger than 0.086 nm, which proved that the proposed system was effectual in eliminating periodic nonlinear errors.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research