Setting And Testing Of A Right Angle System With Zone Plate Pattern Analysis

Po-Hsin Chen; Ding-Tin Lin; Ming-Wen Chang

doi:10.1117/12.948036

27 January 1989 Setting And Testing Of A Right Angle System With Zone Plate Pattern Analysis

Po-Hsin Chen, Ding-Tin Lin, Ming-Wen Chang

Proceedings Volume 0965, Current Developments in Optical Engineering III; (1989) https://doi.org/10.1117/12.948036
Event: 32nd Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1988, San Diego, CA, United States

Abstract

By using a low power laser beam to pass through a beam splitter to illuminate the system which functions as a right angle reflector, the incident beam is reflected several times in the interval between the beam splitter and the system. The reflections will result in multiple beams to emerge from the system to the screen. The two principal ones of these beams will interfere each other to generate a zone plate pattern. When the centers of the beams are not coincided, unsymmetrical fringe pattern will be observed. By adjusting the system to get symmetrical pattern, perpendicularity of setting of the system will be gotten. In testing, deviation of perpendicularity of the angle to be tested can be estimated from the symmetry of the interference pattern. It is very easy to get five arc seconds accuracy both in setting and testing.

Citation Download Citation

Po-Hsin Chen, Ding-Tin Lin, and Ming-Wen Chang "Setting And Testing Of A Right Angle System With Zone Plate Pattern Analysis", Proc. SPIE 0965, Current Developments in Optical Engineering III, (27 January 1989); https://doi.org/10.1117/12.948036

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KEYWORDS

Beam splitters

Zone plates

Prisms

Optical engineering

Laser resonators

Analytical research

Light sources

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