Nonlinearities reported as self-focusing in exotic media such as green Chinese tea are identified as thermal self-defocusing. These large index changes can be used to study hysteresis, power-induced self-switching and cross-switching, the power-induced lensing effect, and other nonlinearities at interfaces.
© 1990 Optical Society of America
Original Manuscript: February 2, 1990
Published: September 20, 1990
Ming Lai and Jean-Claude Diels, "Thermal nonlinear effects in exotic media: application to the study of nonlinear interfaces," Appl. Opt. 29, 3882-3885 (1990)