Relaxation Time of Short Wavelength Intersubband Transition in InGaAs/AlAs Quantum Wells
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概要
- 論文の詳細を見る
Linear and nonlinear light absorption characteristics of short-wavelength (near-infrared) intersubband transition in InGaAs/AlAs quantum wells are investigated for estimation of the intersubband relaxation time. Linear absorption measurements reveal that the intersubband absorption width is dominated by the inhomogeneous broadening caused by well-width fluctuations. Nonlinear absorption measurement results are analyzed by focusing on the inhomogeneous broadening and probe pulse width, which reveals that the intersubband energy relaxation time is as short as 1-10 ps. The observed relaxation time is of the same order as those of long wavelength (far-infrared) intersubband transitions. This result is expected to be useful for the ultrafast application of short-wavelength intersubband transition.
- 社団法人応用物理学会の論文
- 1998-11-15
著者
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Noda Susumu
Department Of Electrical Engineering Kyoto University
-
Asano Takashi
Department Of Electronic Science And Engineering Kyoto University
-
Asano Takashi
Department Of Child Neurology Okayama University Medical School
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Noda Susumu
Department of Electric Science and Engineering, Kyoto University
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