We have developed and characterized a novel method of measuring the transient response of third-order optical nonlinearities using degenerate four-wave mixing and a phase-conjugated laser system. Variable compression of laser pulses allows selective probing of a material for thermal effects and faster nonlinearities such as electronic or reorientational effects. We confirm the utility of the system by demonstrating time-scale-dependent nonlinear optical behavior in an organometallic liquid crystal.
© 1997 Optical Society of America
Original Manuscript: January 10, 1997
Revised Manuscript: May 15, 1997
Published: August 20, 1997
Patrick Klövekorn and Jesper Munch, "Variable stimulated Brillouin scattering pulse compressor for nonlinear optical measurements," Appl. Opt. 36, 5913-5917 (1997)