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Proceedings Paper

Simple lateral shearing interferometer using phase-shifting interferometry technique
Author(s): Jae Bong Song; Yun Woo Lee; In Won Lee; Jung Hoon Lee
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Paper Abstract

In order to use phase shifting interferometry(PSI) in lateral shearing interferometer, piezoelectric transducer(PZT) is mainly used. But because PZT has many error sources and the moving distance for required phase shifting is very short, the phase shifting quantity has always considerable errors. We present a simple phase shifting technique without PZT. Moving the wedge plate parallel to the first wedge surface changes the phase difference between the original wavefront and the sheared wavefront. This method makes the shearing interferometer very simple in spite of using PSI technique. We derive the phase shifting relations originated from the moving wedge and discuss some error factors.

Paper Details

Date Published: 20 September 2002
PDF: 9 pages
Proc. SPIE 4927, Optical Design and Testing, (20 September 2002); doi: 10.1117/12.464343
Show Author Affiliations
Jae Bong Song, Korea Research Institute of Standards and Science (South Korea)
Yun Woo Lee, Korea Research Institute of Standards and Science (South Korea)
In Won Lee, Korea Research Institute of Standards and Science (South Korea)
Jung Hoon Lee, Yeungnam Univ. (South Korea)


Published in SPIE Proceedings Vol. 4927:
Optical Design and Testing
Zhicheng Weng; Jose M. Sasian; Yongtian Wang, Editor(s)

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