Spectral broadening of a weak 80-microJ picosecond 530-nm laser pulse in a BK-7 glass has been enhanced over the entire spectral band by the presence of an intense millijoule picosecond 1060-nm laser pulse. The spectral distributions of the self-phase modulation and the induced-phase modulation signals are similar. The dominant enhancement mechanism for the induced supercontinuum was determined to be caused by an induced-phase modulation process, not by stimulated four-photon scattering.
Nonlinear-optical properties of various salts and water solutions were measured using an 8-psec laser pulse at 530 nm. It was found that the optical Kerr effect and supercontinuum signals were several times larger in saline water than in pure water. The optical Kerr effect signals from saturated aqueous solutions of ZnCl(2) were about 35 times greater, and the self-phase-modulation signals from saturated aqueous solutions of K(2)ZnCl(4) were about 10 times greater.
The temporal profiles of harmonic cross phase modulation pulses from 500 to 570 nm generated in ZnSe by a 1054 nm picosecond pulse have been observed and theoretically modeled. The pulse shape of these harmonic-modulated pulses is accounted for by the interference and induced phase matching of the harmonic generated waves in ZnSe by cross phase modulation.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.