Title :
Time evolution of excited-state nonlinear optical processes in conjugated linear chains
Author :
Arayathaitkul, K. ; Chen, Wei-Dar ; Shi, R.F. ; Cai, Y.M. ; Garito, A.F.
Author_Institution :
Dept. of Phys., Pennsylvania Univ., Philadelphia, PA, USA
Abstract :
The enhancement of the third order nonlinear optical susceptibility in diphenylhexatriene (DPH) when the system is optically pumped into /spl Pi/electron excited states, has been studied theoretically and experimentally. In this report, the time evolution of the excited state enhanced is experimentally studied using picosecond degenerate four wave mixing (DFWM) techniques, in which DPH molecules are optically pumped to their excited state, and then nonresonantly probed.
Keywords :
excited states; high-speed optical techniques; multiwave mixing; nonlinear optical susceptibility; optical materials; optical pumping; organic compounds; /spl Pi/electron excited states; DPH; DPH molecules; conjugated linear chains; diphenylhexatriene; excited state; excited-state nonlinear optical processes; nonresonantly probed; optically pumped; picosecond degenerate four wave mixing; third order nonlinear optical susceptibility enhancement; time evolution; Delay effects; Electron optics; Laser excitation; Nonlinear optics; Optical microscopy; Optical mixing; Optical pumping; Physics; Probes; Stationary state;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 1996. QELS '96., Summaries of Papers Presented at the
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
1-55752-444-0
