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- Lee, Ja Yil
- Biochemistry and Molecular Biophysics Lab.
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Two-color picosecond and continuous-wave experiments on anti-Stokes and Stokes carrier-transfer phenomena in GaAslAl(x)Ga(1-x)As and InGaP2/AlxGa1-xAs heterostructures
- Author(s)
- Hohng, SC, Khang, DW, Ahn, YH, Lee, Ja Yil, Kihm, SY, Kim, DH, Kim, WS, Woo, JC, Kim, Dai-Sik, Citrin, DS, Woo, DH, Kim, EK, Kim, SH, Lim, KS
- Issued Date
- 1999-09
- Citation
- PHYSICAL REVIEW B, v.60, no.12, pp.8883 - 8889
- Abstract
- We present direct evidence of the two-step absorption process in anti-Stokes photoluminescence in both GaAs/AlxGa1-xAs and InGaP2/AlxGa1-xAs heterostructures using two-color picosecond and continuous-wave photoluminescence experiments. We show information about the lifetime of the defect states that participate in the two-step absorption process. As a result, we conclude that the long-lived states rather than excitons play the dominant role in the two-step absorption process. We also study the possible contribution of the two-step absorption process to Stokes carrier transfer in GaAs/AlxGa1-xAs asymmetric double quantum well structures
- Publisher
- AMER PHYSICAL SOC
- ISSN
- 2469-9950
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