Title :
Self-, cross-, and induced-phase modulations of ultrashort laser pulse propagation
Author :
Alfano, R.R. ; Ho, P.P.
Author_Institution :
Dept. of Phys. & Electr. Eng., City Coll. of New York, NY, USA
Abstract :
Spectral broadenings of picosecond and femtosecond pulses arising from self-phase modulation, cross-phase modulation, induced-phase modulation, and induced spectral broadening in condensed matter are reviewed. The spectral broadening of the Raman line produced in an optical fiber is compared to the spectral width of the pump-laser line as evidence for cross-phase modulation. Induced-phase modulation of a weak picosecond 527-nm laser pulse in BK-7 glass occurred in the presence of an intense picosecond 1054-nm laser pulse. The induced spectral broadening about a weak nonphase-matched second-harmonic pulse at 527 nm is observed by propagating an intense primary 1054-nm picosecond laser pulse through ZnSe crystals.<>
Keywords :
laser beams; optical fibres; optical modulation; spectral line breadth; 1054 nm; 500 to 570 nm; 527 nm; Raman line; ZnSe crystals; condensed matter; cross-phase modulation; femtosecond pulses; glass; induced-phase modulations; optical fiber; picosecond laser pulse; picosecond pulses; pump-laser line; second-harmonic pulse; self-phase modulation; spectral broadening; ultrashort laser pulse propagation; Fiber lasers; Glass; Intensity modulation; Optical fibers; Optical propagation; Optical pulses; Pulse modulation; Pump lasers; Stimulated emission; Ultrafast optics;
Journal_Title :
Quantum Electronics, IEEE Journal of
