Observations of near-zero linewidth enhancement factor in a quantum-well coupled quantum-dot laser
Identifieur interne : 00BD58 ( Main/Repository ); précédent : 00BD57; suivant : 00BD59Observations of near-zero linewidth enhancement factor in a quantum-well coupled quantum-dot laser
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Abstract
Amplified spontaneous emission (ASE) measurements of a quantum-well coupled quantum-dot (QW-QD) laser are investigated in our experimental study. Fabry-Perot ASE spectrum taken below threshold of this device allows the extraction of gain, index of refraction change, and linewidth enhancement factor. Our experimental study includes continuous wave and pulsed measurements. The QW-QD laser consists of an auxiliary QW which assists in carrier collection while tunneling of carriers takes place from the well to the dot region. Our experimental analysis reveals a low linewidth enhancement factor of 0.15 over a flat spectrum for these GaAs-InGaAs-InAs QW-QD lasers. © 2003 American Institute of Physics.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Observations of near-zero linewidth enhancement factor in a quantum-well coupled quantum-dot laser</title><author><name sortKey="Kondratko, Piotr Konrad" uniqKey="Kondratko P">Piotr Konrad Kondratko</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 1406 W. Green Street, Urbana, Illinois 61801</s1><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Illinois</region></placeName><wicri:cityArea>Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 1406 W. Green Street, Urbana</wicri:cityArea></affiliation></author><author><name sortKey="Chuang, Shun Lien" uniqKey="Chuang S">Shun-Lien Chuang</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 1406 W. Green Street, Urbana, Illinois 61801</s1><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Illinois</region></placeName><wicri:cityArea>Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 1406 W. Green Street, Urbana</wicri:cityArea></affiliation></author><author><name sortKey="Walter, Gabriel" uniqKey="Walter G">Gabriel Walter</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 1406 W. Green Street, Urbana, Illinois 61801</s1><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Illinois</region></placeName><wicri:cityArea>Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 1406 W. Green Street, Urbana</wicri:cityArea></affiliation></author><author><name sortKey="Chung, Theodore" uniqKey="Chung T">Theodore Chung</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 1406 W. Green Street, Urbana, Illinois 61801</s1><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Illinois</region></placeName><wicri:cityArea>Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 1406 W. Green Street, Urbana</wicri:cityArea></affiliation></author><author><name sortKey="Holonyak, Nick" uniqKey="Holonyak N">Nick Holonyak</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 1406 W. Green Street, Urbana, Illinois 61801</s1><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Illinois</region></placeName><wicri:cityArea>Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 1406 W. 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Fabry-Perot ASE spectrum taken below threshold of this device allows the extraction of gain, index of refraction change, and linewidth enhancement factor. Our experimental study includes continuous wave and pulsed measurements. The QW-QD laser consists of an auxiliary QW which assists in carrier collection while tunneling of carriers takes place from the well to the dot region. 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The QW-QD laser consists of an auxiliary QW which assists in carrier collection while tunneling of carriers takes place from the well to the dot region. 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