title: Thermal nonlinear effects in exotic media: application to the study of nonlinear interfaces.
abstract: Nonlinearities reported as self-focusing in exotic media such as green Chinese tea are identified as thermal selfdefocusing. 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.
authors.forename: M
authors.initials: M
authors.lastname: Lai
authors.forename: J C
authors.initials: JC
authors.lastname: Diels