Long-Wavelength Multilayered InAs Quantum Dot Lasers
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概要
- 論文の詳細を見る
In this paper, we describe the dependence of dot density per layer on laser performance for long-wavelength multilayered InAs quantum dot (QD) lasers. On the basis of the investigation of the undoped 12-QD lasers with a dot density per layer in the range of ($1.4--3.0)\times 10^{10}$ cm-2, we found that lasers with nearly identical photoluminescence (PL) intensities and full width at half maximum (FWHM) have almost the same relationships between the threshold current density ($J_{\text{th}}$) and the mirror loss as well as nearly the same maximum mirror losses from which lasers can oscillate from the ground state (GS). Although the PL intensities increase to 2–30 times higher than those of the undoped lasers by applying p-type modulation doping, the maximum mirror losses from which lasers can oscillate from the GS are nearly the same as those of undoped lasers. These are probably due to the fact that the $J_{\text{th}}$ of dot lasers fabricated by the self-assembly method are strongly dominated by the gain width, which is governed by the nonuniformity of QDs.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2007-02-15
著者
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Yoshida Junji
Department Of Cardiorenal Cerebrovascular Medicine Kagawa University Faculty Of Medicine
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Saravanan Shanmugam
Department Of Nonlinear Science Atr Wave Engineering Laboratories
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Ibe Sayoko
Yokohama R&d Laboratories Furukawa Electric Co. Ltd.
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Shimizu Hitoshi
Department Of Earth And Planetary Systems Science Graduate School Of Science Hiroshima University
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Yokouchi Noriyuki
Yokohama R&d Laboratories Furukawa Electric Co. Ltd.
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Shimizu Hitoshi
Department of Nonlinear Science, ATR Wave Engineering Laboratories, 2-2-2 Hikaridai, "Keihanna Science City," Kyoto 619-0288, Japan
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Saravanan Shanmugam
Department of Nonlinear Science, ATR Wave Engineering Laboratories, 2-2-2 Hikaridai, "Keihanna Science City," Kyoto 619-0288, Japan
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Yoshida Junji
Department of Nonlinear Science, ATR Wave Engineering Laboratories, 2-2-2 Hikaridai, "Keihanna Science City," Kyoto 619-0288, Japan
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SHIMIZU Hitoshi
Department of Anesthesiology, Obihiro Kyokai Hospital
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