Growth of Columnar Quantum Dots by Metalorganic Vapor-Phase Epitaxy for Semiconductor Optical Amplifiers

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概要

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• Growth of polarization-controlled quantum dots (QDs) by metalorganic vapor-phase epitaxy for semiconductor optical amplifiers (SOAs) is reported. Columnar QDs with small lateral sizes and high aspect ratios were formed using low growth temperatures and highly tensile-strained barriers. Dominant polarization sensitivities of columnar QDs were changed from the transverse-electric (TE) mode to the transverse-magnetic (TM) mode by controlling the heights of columnar QDs and tensile-strained barriers. TM-gain-dominant-QD SOAs were fabricated. A TM-mode gain of 17.3 dB was obtained at a wavelength of 1.55 μm. Polarization dependent gain was tuned by barrier thickness and reduced to 2.5 dB.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2008-04-25

著者

• Akiyama Tomoyuki

  Qd Laser Inc.

• YASUOKA Nami

  Fujitsu Limited and Fujitsu Laboratories, Limited

• Sugawara Mitsuru

  Fujitsu Laboratories Ltd.

• Ekawa Mitsuru

  Fujitsu Laboratories Ltd.

• Ebe Hiroji

  Institute Of Industrial Science (iis) The University Of Tokyo

• Kawaguchi Kenichi

  Fujitsu Laboratories Limited

• Arakawa Yasuhiko

  Institute For Nano Quantum Information Electronics (nanoquine) The University Of Tokyo

• Akiyama Tomoyuki

  QD Laser Inc., Kudankita, 1-14-17 Chiyoda-ku, Tokyo 102-0073, Japan

• Kawaguchi Kenichi

  Fujitsu and Fujitsu Laboratories Ltd., 10-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0197, Japan

• Yasuoka Nami

  Fujitsu and Fujitsu Laboratories Ltd., 10-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0197, Japan

• Sugawara Mitsuru

  Fujitsu and Fujitsu Laboratories Ltd., 10-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0197, Japan

• Ekawa Mitsuru

  Fujitsu and Fujitsu Laboratories Ltd., 10-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0197, Japan

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