Full-surface interferometric scanner (FSIS) for testing large cylindrical mirror surfaces

John L. Remo

doi:10.1117/12.208206

26 April 1995 Full-surface interferometric scanner (FSIS) for testing large cylindrical mirror surfaces

John L. Remo

Proceedings Volume 2376, Laser Power Beaming II; (1995) https://doi.org/10.1117/12.208206
Event: Photonics West '95, 1995, San Jose, CA, United States

Abstract

Adaptive and active optics in general, and laser power beaming in particular, requires the construction of large, complex mirror systems. Since these mirrors need to be tested with high accuracy to achieve optimum performance, their unusual shape and size often require the construction of special testing equipment. A full-surface interferometric scanning (FSIS) system for testing large cylindrical surfaces, which cannot be readily tested with current commercial interferometer systems, is described. The FSIS approach, using grating shearing interferometry, is based on interferometric slope measurement along the long direction of the cylindrical surface under test. The full surface measurement is synthesized from a discrete set of subaperture measurements obtained by scanning in the direction of the long side of the cylindrical surface. The FSIS is characterized by a high degree of immunity from the effects of vibration.

Citation Download Citation

John L. Remo "Full-surface interferometric scanner (FSIS) for testing large cylindrical mirror surfaces", Proc. SPIE 2376, Laser Power Beaming II, (26 April 1995); https://doi.org/10.1117/12.208206

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