【摘要】 首次成功地将富勒碳掺入光学玻璃。在磷酸盐玻璃重掺杂中,发现了C₆₀分子在四种不同化学环境中迅速旋转所对应的四条NMR线。在氟磷激光玻璃轻掺杂中,发现C₆₀/C₇₀特征吸收带叠加在稀土离子吸收带上,掺杂玻璃的本征吸收边带兰移40mm,说明富勒分子和玻璃申非桥氧的结合。 C₆₀四苯溶液中显示出基于反饱和吸收的光限制效应,强的非线性吸收可平滑纳秒范围的尖峰脉冲,在掺C₆₀/C₇₀的聚苯乙烯薄层的非线性F-P腔中,获得光学双稳态,一个25ns宽的光滑脉冲被压窄至15ns。更多还原

【Abstract】 Fullerene molecules containing C₆₀/C₇₀ mixture are doped into optical glass successfully for the first time. For the phosphate glass and heavy doping, four sharp NMR lines corresponding to the C₆₀ molecules rotating rapidly in four different chemical environments are found. For the fluophosphate laser glass and light doping, the characteristic absorption band of C₆₀/C₇₀ mixture can be separated from the absorption lines of laser-active rare-earch ions in the visible and near infrared region, and a blue-shifted eigen UV absorption edge of the glass up to 40nm demonstrates the bond of the fullerene molecules with the nonbridging oxygen of the glass. Efficient optical limitation is demonstrated in the toluene solution of C₆₀ based on the reverse saturable absorption. The highly nonlinear absorption can be used to smooth a spike-like pulse in the nanosecond region. Optical bistability is obtained in a nonlinear Fabry-Perot cavity filled with a thin layer of polystyrene doped with C₆₀/C₇₀. A smooth pulse with 25 ns width（FWHM） is compressed to 15ns and a spike-like pulse is subject to a wave-form distortion by this device更多还原