These nonlinear interactions give rise to a host of optical phenomena:
Nonlinear optics explains nonlinear response of properties such as frequency, polarization, phase or path of incident light. The theoretical basis for many nonlinear processes were first described in Bloembergen's monograph "Nonlinear Optics". However, some nonlinear effects were discovered before the development of the laser. at University of Michigan, both shortly after the construction of the first laser by Theodore Maiman. The first nonlinear optical effect to be predicted was two-photon absorption, by Maria Goeppert Mayer for her PhD in 1931, but it remained an unexplored theoretical curiosity until 1961 and the almost simultaneous observation of two-photon absorption at Bell Labs Īnd the discovery of second-harmonic generation by Peter Franken et al. In nonlinear optics, the superposition principle no longer holds. Above the Schwinger limit, the vacuum itself is expected to become nonlinear. The non-linearity is typically observed only at very high light intensities (when the electric field of the light is >10 8 V/m and thus comparable to the atomic electric field of ~10 11 V/m) such as those provided by lasers. Nonlinear optics ( NLO) is the branch of optics that describes the behaviour of light in nonlinear media, that is, media in which the polarization density P responds non-linearly to the electric field E of the light. Branch of physics Structure of KTP crystal, viewed down b axis, used in second harmonic generation.
0 kommentar(er)
