摘要
本文首次研究了ＺｎＳｅ－ＺｎＴｅ多量子阱在室温下的反射型皮秒激子光双稳，实验结果表明，ＺｎＳｅ－ＺｎＴｅ多量子阱在室温下的反射型皮秒光双稳的阈值光强和对比度分别为１．１ＭＷ／ｃｍ２和６：１．根据测量得到的ＺｎＳｅ－ＺｎＴｅ多量子阱在室温下的激子吸收光谱及激子的非线性吸收理论，归结ＺｎＳｅ－ＺｎＴｅ多量子阱室温下的皮秒光双稳的主要非线性机理为ＺｎＳｅ－ＺｎＴｅ多量子阱的激子饱和吸收引起的折射率变化．
he excitonic optical bistability with picosecond switching time in ZnSe-ZnTe/GaAs multiple quantum wells(MQWs)has been studied on reflection at room.temperature for the first time.The experimental results indicate that the switching threshold from high to low states and the contrast ratio for the optical bistability are about 1.1MW/cm2 and 6:1,respectively.the major nonlinear mechanism for the optical bistability is due to the change of refractive index caused by the excitonic saturating absorption.
出处
《发光学报》
EI
CAS
CSCD
北大核心
1995年第1期16-19,共4页
Chinese Journal of Luminescence
基金
国家自然科学基金
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