Title :
Near-infrared optical limiting of C/sub 60/ derivatives and higher fullerenes
Author :
Heflin, J.R. ; Figura, C. ; Marciu, D. ; Wang, Shuhui ; Yordanov, R. ; Withers, J.C.
Author_Institution :
Dept. of Phys., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
Summary form only given. Here we report measurements of two fullerene-based materials, derivatives of C/sub 60/ and higher fullerenes, in the wavelength region 680 to 880 nm and show that the weak ground-state absorptions they possess extend the efficient reverse saturable absorption (RSA) of the fullerenes to longer wavelengths than is found for C/sub 60/ alone. The optical-limiting measurements from 680 to 880 nm are performed with a pulsed dye laser pumped by the frequency-doubled output of an 8 ns pulsewidth, Q-switched Nd:YAG laser.
Keywords :
Q-switching; carbon; fullerenes; limiters; neodymium; nonlinear optics; optical materials; optical saturable absorption; C/sub 60/ derivatives; frequency-doubled output; fullerene-based materials; fullerenes; higher fullerenes; near-infrared optical limiting; optical-limiting measurements; pulsed dye laser pumping; reverse saturable absorption; weak ground-state absorption; Absorption; Frequency measurement; Laser excitation; Optical materials; Optical pulses; Optical pumping; Performance evaluation; Pulse measurements; Pump lasers; Wavelength measurement;
Conference_Titel :
Lasers and Electro-Optics, 1996. CLEO '96., Summaries of papers presented at the Conference on
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
1-55752-443-2
