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Proceedings Paper

Computerized lateral-shear interferometer
Author(s): Sorin A. Hasegan; Angela Jianu; Valentin I. Vlad
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Paper Abstract

A lateral-shear interferometer, coupled with a computer for laser wavefront analysis, is described. A CCD camera is used to transfer the fringe images through a frame-grabber into a PC. 3D phase maps are obtained by fringe pattern processing using a new algorithm for direct spatial reconstruction of the optical phase. The program describes phase maps by Zernike polynomials yielding an analytical description of the wavefront aberration. A compact lateral-shear interferometer has been built using a laser diode as light source, a CCD camera and a rechargeable battery supply, which allows measurements in-situ, if necessary.

Paper Details

Date Published: 2 July 1998
PDF: 5 pages
Proc. SPIE 3405, ROMOPTO '97: Fifth Conference on Optics, (2 July 1998); doi: 10.1117/12.312697
Show Author Affiliations
Sorin A. Hasegan, National Institute for Laser, Plasma, and Radiation Physics (Romania)
Angela Jianu, National Institute for Laser, Plasma, and Radiation Physics (Romania)
Valentin I. Vlad, National Institute for Laser, Plasma, and Radiation Physics (Romania)


Published in SPIE Proceedings Vol. 3405:
ROMOPTO '97: Fifth Conference on Optics
Valentin I. Vlad; Dan C. Dumitras, Editor(s)

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