Laser-induced circular birefringence measurements have been performed on a liquid suspension of polymer microellipsoids in order to study its optical nonlinearity as a function of the host liquid’s refractive index nh. The results show that the large values obtained for the χ1221(3) term (1.6 × 10-8 esu for nh = 1.330) can be explained with an intrinsic birefringence of the microellipsoids relative to their geometrical axes. The obtained values for the refractive indices are n‖ = 1.391 and n⊥ = 1.368.
© 1989 Optical Society of America
M. De Spirito, R. Pizzoferrato, U. Zammit, M. Marinelli, F. Scudieri, S. Martellucci, and M. Romagnoli, "Third-order nonlinearity enhancement in an artificial Kerr medium through bulk intrinsic birefringence," Opt. Lett. 14, 239-241 (1989)