Title :
Third order optical non-linearity of poly(p-phenylenevinylene) at 800 nm
Author :
Luther-Davies, B. ; Samoc, M. ; Samoc, A. ; Woodruff, M.
Author_Institution :
Res. Sch. of Phys. Sci. & Eng., Australian Nat. Univ., Canberra, ACT, Australia
Abstract :
We report here on measurements of the sign and magnitude of the third order nonlinearity of poly(p-phenylenevinylene) (PPV), and the magnitude of the two photon absorption coefficient using 125fs pulses from an amplified mode-locked Ti:sapphire laser. We also demonstrate that the nonlinear index change saturation is accompanied by the appearance of a long lived component in the transient grating generated within the material associated with excited state absorption
Keywords :
absorption coefficients; excited states; light absorption; optical focusing; optical polymers; optical saturation; optical solitons; 125 ps; 800 nm; PPV; amplified mode-locked Ti:sapphire laser; excited state absorption; long lived component; nonlinear index change saturation; poly(p-phenylenevinylene); third order nonlinearity; third order optical nonlinearity; transient grating; two photon absorption coefficient; Absorption; Gratings; Laser mode locking; Nonlinear optics; Optical materials; Optical pulses; Optical saturation; Pulse amplifiers; Pulse measurements; Stimulated emission;
Conference_Titel :
Nonlinear Optics: Materials, Fundamentals, and Applications, 1994. NLO '94 IEEE
Conference_Location :
Waikoloa, HI
Print_ISBN :
0-7803-1473-5
DOI :
10.1109/NLO.1994.470876
