摘要
报道了用常压MOCVD生长的Znse薄膜的光学非线代在77K下用纳秒脉冲激光观测到ZnSe薄膜的增强吸收光双稳特性非线性机理可能是由激子Coulomb相互作用屏蔽引起的
In the paper, we have obtained nonlinear absorption coefficient and nonlinear refractive index as a function using transmission spectra for ZnSe thin film. And observed increasing absorption optical bistablity using nanosecond pulsed laser in ZnSe thin film at 77K. The results indicate that the major excitonic nonlinear mechanism is due to Coulomb screening of the excitonic state.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
1998年第4期399-402,共4页
Chinese Journal of Materials Research
基金
国家自然科学基金
中山大学超快激光光谱学国家重点实验室基金
关键词
光学非线性
薄膜
增强吸收光双稳
硒化锌
半导体
optical nonlinearities, ZnSe thin film, increasing absorption optical bistablity
