Abstract
Laser systems often consist of several parallel channels. For cooling and suppressing amplified spontaneous emission, such lasers have an advantage over those with monolithic active elements. For any multichannel optical system operating with diffraction beams, optical path difference (OPD) between beams (and their every aperture) should be controlled with the accuracy of wavelength fraction. It has been shown1,2 that wavefront reversal by stimulated Brillouin scattering (SBS) permits solution of this task in principle.
© 1991 Optical Society of America
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