The nonlineat third order optical susceptibility of C_(60) films on roughed glass plate has been studied by using a inode locked Nd:YAG laser emitting 8ps pulsed at 1.064 μm of 0.3 J energy.The large|χ^(3)(-3ω,ω,...The nonlineat third order optical susceptibility of C_(60) films on roughed glass plate has been studied by using a inode locked Nd:YAG laser emitting 8ps pulsed at 1.064 μm of 0.3 J energy.The large|χ^(3)(-3ω,ω,ω,ω)|=2 ×10^(-8) esu for C_(60) films of 15μm thickness has been observed,which is 1O^(3) larger than the value in the bulk C_(60).This is due to surface enhanced effect.展开更多
Hydrogenated amorphous silicon carbide(a-Sic_(x):H)films were prepared by glow discharge technique with gas mixture of silane(SiH_(4))and methan(CH_(4)).The room-temperature optical bistability was demonstrated in unc...Hydrogenated amorphous silicon carbide(a-Sic_(x):H)films were prepared by glow discharge technique with gas mixture of silane(SiH_(4))and methan(CH_(4)).The room-temperature optical bistability was demonstrated in uncoated a-SiC_(x):H films at the excitation wavelength about 532nm.The switch-on intensity of device is about 0.8 MW/cm^(2) and the switching time is in the nanosecond scale.The physical origin of the optical nonlin5arity in these materials is also discussed.展开更多
基金Supported by the National Natuiil Science Foundation of China,S.F.of Zhejiang Province,P.R.C.and Doctoral Foundation of China.
文摘The nonlineat third order optical susceptibility of C_(60) films on roughed glass plate has been studied by using a inode locked Nd:YAG laser emitting 8ps pulsed at 1.064 μm of 0.3 J energy.The large|χ^(3)(-3ω,ω,ω,ω)|=2 ×10^(-8) esu for C_(60) films of 15μm thickness has been observed,which is 1O^(3) larger than the value in the bulk C_(60).This is due to surface enhanced effect.
基金Supported by the National Natural Science Foundation of China.
文摘Hydrogenated amorphous silicon carbide(a-Sic_(x):H)films were prepared by glow discharge technique with gas mixture of silane(SiH_(4))and methan(CH_(4)).The room-temperature optical bistability was demonstrated in uncoated a-SiC_(x):H films at the excitation wavelength about 532nm.The switch-on intensity of device is about 0.8 MW/cm^(2) and the switching time is in the nanosecond scale.The physical origin of the optical nonlin5arity in these materials is also discussed.
