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. 1997 Mar 15;22(6):360-2.
doi: 10.1364/ol.22.000360.

Brillouin-enhanced four-wave-mixing vector phase-conjugate mirror with beam-combining capability

M W Bowers, R W Boyd, A K Hankla

Brillouin-enhanced four-wave-mixing vector phase-conjugate mirror with beam-combining capability

M W Bowers et al. Opt Lett. .

Abstract

It is often desirable to remove both wave front and polarization aberrations from an optical beam. Scalar phase conjugation, such as ordinary stimulated Brillouin scattering, can correct only for wave-front aberrations. We have developed a new geometry for Brillouin-enhanced four-wave mixing that performs vector phase conjugation to correct for both wave-front and polarization distortions. Results show a reduction in the depolarization losses from 50% to less than 2% of the total output energy. Coherent, variable, multiple-beam combination is achieved without need of nonreciprocal devices such as Faraday rotators.

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