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16 January 1988 Interferometric Alignment By A Circular Zone Plate
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Proceedings Volume 0952, Laser Technologies in Industry; (1988)
Event: Laser Technologies in Industry, 1988, Porto, Portugal
A simple method for optical alignment and positioning between two planes by means of a Circular Zone Plate (CZP), is proposed.The first plane is determinated by the zone plate and the other one is related to position of a reflecting surface situated in the forward space of the zone plate. Two points sources are generated by the same zone plate,when it is illuminated by a plane wave, and by several diffracted orders reflected by the reflecting surface.. Interference pattern produced by two spherical waves depend on the relative position of the generating sources. Tilting or axial misalignment between the planes determine the relative position of the two point sources and it yield fringe pattern variation.
© (1988) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
V. Moreno, M. V. Perez, S. Bara, and C. Gomez -Reino "Interferometric Alignment By A Circular Zone Plate", Proc. SPIE 0952, Laser Technologies in Industry, (16 January 1988);

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