Stimulated Brillouin scattering beam combining is shown to be extremely sensitive to optical misalignments. For the coupling of two overlapping beams, the angular misalignment bandwidth is of the order of 1 mrad, which corresponds to a separation of ±0.64 beam spot diameter. This occurs for beam displacements normal to the plane defined by the beams’ propagation paths.
© 1990 Optical Society of America
Original Manuscript: November 6, 1989
Manuscript Accepted: February 22, 1990
Published: May 1, 1990
Shmuel Sternklar, Doron Chomsky, Steven Jackel, and Arie Zigler, "Misalignment sensitivity of beam combining by stimulated Brillouin scattering," Opt. Lett. 15, 469-470 (1990)