Gain recovery dynamics and limitations in quantum dot amplifiers

Tommy Winther Berg; Svend Bischoff; Ingibjörg Magnúsdóttir; Jesper Mørk; Paola Borri

doi:10.1109/CLEO.2001.947910

Gain recovery dynamics and limitations in quantum dot amplifiers

Tommy Winther Berg, Svend Bischoff, Ingibjörg Magnúsdóttir, Jesper Mørk, Paola Borri

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Abstract

Summary form only given. While ultra-low threshold current densities have been achieved in quantum dot (QD) lasers, the predicted potential for high-speed modulation has not yet been realized despite the high differential gain. Furthermore, recent single pulse experiments demonstrated very fast gain recovery in a quantum dot amplifier, and it is thus not yet clear what the limiting processes for the device response are. We present the results of a comprehensive theoretical model, which agrees well with the experimental results, and indicates the importance of slow recovery of higher energy levels. The model used is of the rate-equation type with three energy levels: ground state (GS) and excited state (ES) dot levels and a wetting layer

Original language	English
Title of host publication	Proceedings on Technical Digest Lasers and Electro-Optics
Publication date	2001
Pages	358-359
ISBN (Print)	15-57-52662-1
DOIs	https://doi.org/10.1109/CLEO.2001.947910
Publication status	Published - 2001
Event	Conference on Lasers and Electro-Optics 2001 - Baltimore, MD, United States Duration: 6 May 2001 → 11 May 2001

Conference

Conference	Conference on Lasers and Electro-Optics 2001
Country/Territory	United States
City	Baltimore, MD
Period	06/05/2001 → 11/05/2001

Bibliographical note

Copyright: 2000 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

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title = "Gain recovery dynamics and limitations in quantum dot amplifiers",

abstract = "Summary form only given. While ultra-low threshold current densities have been achieved in quantum dot (QD) lasers, the predicted potential for high-speed modulation has not yet been realized despite the high differential gain. Furthermore, recent single pulse experiments demonstrated very fast gain recovery in a quantum dot amplifier, and it is thus not yet clear what the limiting processes for the device response are. We present the results of a comprehensive theoretical model, which agrees well with the experimental results, and indicates the importance of slow recovery of higher energy levels. The model used is of the rate-equation type with three energy levels: ground state (GS) and excited state (ES) dot levels and a wetting layer",

author = "Berg, {Tommy Winther} and Svend Bischoff and Ingibj{\"o}rg Magn{\'u}sd{\'o}ttir and Jesper M{\o}rk and Paola Borri",

note = "Copyright: 2000 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE; Conference on Lasers and Electro-Optics 2001, CLEO '01 ; Conference date: 06-05-2001 Through 11-05-2001",

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AU - Berg, Tommy Winther

AU - Bischoff, Svend

AU - Magnúsdóttir, Ingibjörg

AU - Mørk, Jesper

AU - Borri, Paola

N1 - Copyright: 2000 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

PY - 2001

Y1 - 2001

N2 - Summary form only given. While ultra-low threshold current densities have been achieved in quantum dot (QD) lasers, the predicted potential for high-speed modulation has not yet been realized despite the high differential gain. Furthermore, recent single pulse experiments demonstrated very fast gain recovery in a quantum dot amplifier, and it is thus not yet clear what the limiting processes for the device response are. We present the results of a comprehensive theoretical model, which agrees well with the experimental results, and indicates the importance of slow recovery of higher energy levels. The model used is of the rate-equation type with three energy levels: ground state (GS) and excited state (ES) dot levels and a wetting layer

AB - Summary form only given. While ultra-low threshold current densities have been achieved in quantum dot (QD) lasers, the predicted potential for high-speed modulation has not yet been realized despite the high differential gain. Furthermore, recent single pulse experiments demonstrated very fast gain recovery in a quantum dot amplifier, and it is thus not yet clear what the limiting processes for the device response are. We present the results of a comprehensive theoretical model, which agrees well with the experimental results, and indicates the importance of slow recovery of higher energy levels. The model used is of the rate-equation type with three energy levels: ground state (GS) and excited state (ES) dot levels and a wetting layer

U2 - 10.1109/CLEO.2001.947910

DO - 10.1109/CLEO.2001.947910

M3 - Article in proceedings

SN - 15-57-52662-1

SP - 358

EP - 359

BT - Proceedings on Technical Digest Lasers and Electro-Optics

T2 - Conference on Lasers and Electro-Optics 2001

Y2 - 6 May 2001 through 11 May 2001

ER -

Gain recovery dynamics and limitations in quantum dot amplifiers

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