Title :
Excitation intensity-dependent ultrafast dynamics in α-quaterthiophene probed by femtosecond spectroscopy
Author :
Yang, Ji-Ping ; Rentsch, Sabine
Author_Institution :
Dept. of Appl. Phys., Hefei Univ. of Technol., Hefei, China
Abstract :
Ultrafast spectroscopy of alpha-quaterthiophene solution shown that the population time and quantum yield of the triplet state are the excitation intensity-dependent, but the lifetime of the excited singlet state is independent upon excitation power.
Keywords :
high-speed optical techniques; superradiance; visible spectroscopy; alpha-quaterthiophene solution; amplified spontaneous emission; excitation intensity-dependent ultrafast dynamics; excitation power; excited singlet state; femtosecond spectroscopy; population time; quantum yield; triplet state; ultrafast spectroscopy; Absorption; Crystals; Laser excitation; Optical pulses; Optical pumping; Pulse amplifiers; Pump lasers; Spectroscopy; Ultrafast electronics; Ultrafast optics; α-quaterthiophene; amplified spontaneous emission; singlet state; triplet state; ultrafast spectroscopy;
Conference_Titel :
Lasers & Electro Optics & The Pacific Rim Conference on Lasers and Electro-Optics, 2009. CLEO/PACIFIC RIM '09. Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-3829-7
Electronic_ISBN :
978-1-4244-3830-3
DOI :
10.1109/CLEOPR.2009.5292662
