Most photorefractive crystals that are suitable for self-pumped four-wave-mixing phase-conjugation and mutual-conjugation geometries are characterized by significant levels of fanning. In some cases this may mean that the nonlinearity in these crystals is already too large to be good, and a decrease in the value of the nonlinear coupling coefficient may result in an improvement in the performance of these geometries. We illustrate this point, using the geometry of a self-pumped ring mirror as an example.
© 1993 Optical Society of America
Original Manuscript: December 3, 1991
Published: June 1, 1993
N. V. Bogodaev, A. V. Mamaev, N. N. Polozkov, A. A. Zozulya, L. I. IvIeva, and A. S. Korshunov, "Geometry of a self-pumped passive ring mirror in crystals with strong fanning," J. Opt. Soc. Am. B 10, 1054-1059 (1993)