Abstract
A temporal transport-of-intensity equation is derived to describe the evolution of the instantaneous power of the electric field in a dispersive medium. As its spatial counterpart, which can be used to measure wavefronts using the intensity measured after various amounts of diffraction, the temporal transport-of-intensity equation allows the determination of temporal phase shifts using only intensity measurements in a direct noninterferometric way. The application to the characterization of nonlinear phase shifts induced by self-phase modulation and cross-phase modulation is used to determine the nonlinear coefficient of a highly nonlinear fiber.
© 2005 Optical Society of America
Full Article | PDF ArticleMore Like This
Yan Han and Guifang Li
Opt. Lett. 30(16) 2077-2079 (2005)
Wei-Shuo Li, Chun-Wei Chen, Kuo-Feng Lin, Hou-Ren Chen, Chih-Ya Tsai, Chyong-Hua Chen, and Wen-Feng Hsieh
Opt. Lett. 41(7) 1616-1619 (2016)
T. E. Gureyev, A. Roberts, and K. A. Nugent
J. Opt. Soc. Am. A 12(9) 1932-1941 (1995)