Title :
Femtosecond pump-probe investigation on relaxation of photoexcitations and spectral narrowing of photoluminescence for PPV
Author :
Sae Chae Jeoung ; Yong Hee Kim ; Dongho Kim ; Ja-Young Han ; Shim, H.K.
Author_Institution :
Nat. Creative Res. Initiatives Center for Ultrafast Opt. Characteristics Control, Korea Res. Inst. of Stand. & Sci., Taejon, South Korea
fDate :
Aug. 30 1999-Sept. 3 1999
Abstract :
We report femtosecond pump-probe experimental results and emission spectral changes in PPV with a change of excitation power density in order to have a deeper understanding on the primary photoexcitations and the nature of spectrally narrowed emission (SNE).
Keywords :
high-speed optical techniques; optical polymers; optical pumping; photoluminescence; spectral line narrowing; stimulated emission; superradiance; PPV; emission spectral changes; excitation power density; femtosecond pump-probe experimental results; femtosecond pump-probe investigation; photoexcitation; photoluminescence; primary photoexcitations; spectral narrowing; spectrally narrowed emission; Absorption; Bleaching; Excitons; Optical control; Optical films; Optical polymers; Optical pumping; Stationary state; Stimulated emission; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics, 1999. CLEO/Pacific Rim '99. The Pacific Rim Conference on
Conference_Location :
Seoul, South Korea
Print_ISBN :
0-7803-5661-6
DOI :
10.1109/CLEOPR.1999.811505
