Paper Title:
A Two-Dimensional Surface Profile Imaging Technique Based on Heterodyne Interferometer
  Abstract

A two-dimensional surface profile imaging technique based on heterodyne interferometer is proposed. A piezo translator vibrated grating is used to generate a heterodyne signal. A high speed CCD camera is used to extract the interference signal using a five step method. The uncertainty in the displacement measurement is approximately 0.035 µm within a measurement range of 1.7 µm, confirming the two dimensional heterodyne interferometer is valid for measuring the surface profile. The method is also available for low coherence heterodyne interferometer due to the optical frequency shifts caused by the vibration of grating independent on the wavelength.

  Info
Periodical
Key Engineering Materials (Volumes 295-296)
Edited by
Yongsheng Gao, Shuetfung Tse and Wei Gao
Pages
477-482
DOI
10.4028/www.scientific.net/KEM.295-296.477
Citation
K.W. Wang, Z.J. Cai, L. J. Zeng, "A Two-Dimensional Surface Profile Imaging Technique Based on Heterodyne Interferometer", Key Engineering Materials, Vols. 295-296, pp. 477-482, 2005
Online since
October 2005
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Price
$35.00
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