Device which measures the mutual coherence function of a laser b

Details Device which measures the mutual coherence function of a laser b Device which measures the mutual coherence function of a laser b

1979-06-07

1981-05-05

Clark, Conrad J.

Optics: measuring and testing

By particle light scattering

With photocell detection

356353, 250550, G01B 902

Patent

active

042655390

ABSTRACT:
A device which measures the mutual coherence function of a laser beam. The device includes: a screen 1 in which openings 3 to 11 are disposed on the path of the beam 2 and allow pencils of light 19, 29 and 34 to pass; an interferometer constituted by an optical plate 13, a dihedron 14 and a mirror 21; a phase modulator 22 disposed on a branch of the interferometer; receivers 23 to 27 which receive the pencils of light 20 and 33 which emerge from the interferometer; and a processing circuit 36. Application to the analysis of a laser beam.

REFERENCES:
patent: 3517982 (1970-06-01), Fonda-Bonardi
patent: 3776636 (1973-12-01), Dandliker et al.

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