Laser source with coherent beam recombination

Details Laser source with coherent beam recombination Laser source with coherent beam recombination

2006-08-10

2010-12-14

Harvey, Minsun (Department: 2828)

Coherent light generators

Particular beam control device

Optical output stabilization

C372S029020, C359S237000

Reexamination Certificate

active

07852888

ABSTRACT:
A laser source is disclosed with coherent recombination of N spatial monomode laser beams having N phase shifters controlled by a phase-lock device (3). The phase-lock device has an optical device (30) capable of taking at least a portion of each of the N beams. The optical device has an optical element (32) capable of applying a phase deformation, and at least one matrix (M1) of detectors capable of detecting a first image (im) of a wave surface corresponding to the N beams. The matrix (M1) of detectors also detects a second image (imd) deformed by the optical element (32). Processing means (31) are provided for processing the first and second images. The processing means are configured so as to measure the phase pistons between on the sub-pupils (spj) corresponding to the N beams and to apply phase corrections c(φ) to each of the N beams, by means of said N phase shifters so as to minimize the phase pistons.

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Kendrick, R. L. et al. “Phase-Diversity Wave-Front Sensor for Imaging Systems.” Applied Optics, OSA, Optical Society of America, Washington, DC, US, vol. 33, No. 27, Sep. 20, 1994, pp. 6533-6546, XP000469298. OSSM 0003-6935.
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