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|Title:||Optically induced blueshift of photoluminescence excitation spectrum in n-i-p-i multiple quantum well structures|
|Keywords:||n-i-p-i MQW structure|
|Source:||Tang, X.H., Chua, S.J., Zhang, B.L., Zhu, J.Y., Huang, G.S. (2002-08). Optically induced blueshift of photoluminescence excitation spectrum in n-i-p-i multiple quantum well structures. Superlattices and Microstructures 32 (2-3) : 135-144. ScholarBank@NUS Repository. https://doi.org/10.1016/S0749-6036(03)00003-X|
|Abstract:||In this paper, the nonlinear optical properties of hetero n-i-p-i multiple quantum well (MQW) structures are investigated through a two-beam photoluminescence excitation (PLE) measurement. A large blue shift of the PLE spectra of n-i-p-i MQW structures has been observed when the optical excitation power intensity is varied from as low as ∼1 mW cm-2 to ∼10 W cm-2. This nonlinear optical modulation has been enhanced much by using multiple step-quantum wells to replace normal rectangular quantum wells in the n-i-p-i MQW structure. The experimental results agree well with our theoretical model. © 2003 Elsevier Science Ltd. All rights reserved.|
|Source Title:||Superlattices and Microstructures|
|Appears in Collections:||Staff Publications|
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