Performance characteristics of a fast diamond-turned two mirror collimator

Details Performance characteristics of a fast diamond-turned two mirror collimator Performance characteristics of a fast diamond-turned two mirror collimator

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987spie..751..117c&link_type=abstract

IN: Reflective optics; Proceedings of the Meeting, Los Angeles, CA, Jan. 15, 16, 1987 (A88-34536 13-74). Bellingham, WA, Society

Physics

Optics

Collimators, Diamonds, Machining, Mirrors, Q Switched Lasers, Surface Properties, Far Infrared Radiation, Infrared Radiation, Neodymium Lasers, Yag Lasers

Scientific paper

An account is given of a method for determining the surface quality of a diamond-turned reflective optical element, in which the far-field diffraction pattern of a fast diamond-turned two-mirror collimator, as an illustrative example, is observed for coherent radiation at 0.6328 microns, as well as partially coherent radiation at 0.6328 microns, and coherent radiation at 1.0624 microns. A relationship is noted between the degree of coherence of laser light and collimator surface quality. It appears that the manufacturing of surfaces of this type introduces a low spatial frequency, not unlike a gentle 'ripple' on a drum head.

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