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Article: Optical gain of interdiffused InGaAs-As and AlGaAs-GaAs quantum wells

TitleOptical gain of interdiffused InGaAs-As and AlGaAs-GaAs quantum wells
Authors
KeywordsDiffusion processes
Quantum heterostructures
Quantum-well devices
Quantum-well interdiffusion
Quantumwell lasers
Issue Date1998
PublisherIEEE.
Citation
IEEE Journal of Quantum Electronics, 1998, v. 34 n. 1, p. 157-165 How to Cite?
AbstractWe have analyzed theoretically the effects of interdiffusion on the gain, differential gain, linewidth enhancement factor, and the injection current density of In0.2Ga0.8As-GaAs and Al0.3Ga0.7As-GaAs quantum-well (QW) lasers. We have calculated the electron and hole subband structures including the effects of valence band mixing and strains. The optical gain is then calculated using the density matrix approach. Our results show that the gain spectrum can be blue-shifted without an enormous increase in the injected current density. Imposing an upper limit (416 A·cm-2) on the injection current density for a typical laser structure, we find that the InGaAs-GaAs and AlGaAs-GaAs QW lasers can be blue-shifted by 24 and 54 mn, respectively. Our theoretical results compare well with the tuning ranges of 53 and 66 meV found for AlGaAs-GaAs QWs in some experiments. This indicates that the interdiffusion technique is useful for the tuning of laser operation wavelength for multiwavelength applications.
Persistent Identifierhttp://hdl.handle.net/10722/42781
ISSN
2015 Impact Factor: 1.843
2015 SCImago Journal Rankings: 1.128
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChan, KSen_HK
dc.contributor.authorLi, EHen_HK
dc.contributor.authorChan, MCYen_HK
dc.date.accessioned2007-03-23T04:32:04Z-
dc.date.available2007-03-23T04:32:04Z-
dc.date.issued1998en_HK
dc.identifier.citationIEEE Journal of Quantum Electronics, 1998, v. 34 n. 1, p. 157-165en_HK
dc.identifier.issn0018-9197en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42781-
dc.description.abstractWe have analyzed theoretically the effects of interdiffusion on the gain, differential gain, linewidth enhancement factor, and the injection current density of In0.2Ga0.8As-GaAs and Al0.3Ga0.7As-GaAs quantum-well (QW) lasers. We have calculated the electron and hole subband structures including the effects of valence band mixing and strains. The optical gain is then calculated using the density matrix approach. Our results show that the gain spectrum can be blue-shifted without an enormous increase in the injected current density. Imposing an upper limit (416 A·cm-2) on the injection current density for a typical laser structure, we find that the InGaAs-GaAs and AlGaAs-GaAs QW lasers can be blue-shifted by 24 and 54 mn, respectively. Our theoretical results compare well with the tuning ranges of 53 and 66 meV found for AlGaAs-GaAs QWs in some experiments. This indicates that the interdiffusion technique is useful for the tuning of laser operation wavelength for multiwavelength applications.en_HK
dc.format.extent222088 bytes-
dc.format.extent31232 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©1998 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.en_HK
dc.subjectDiffusion processesen_HK
dc.subjectQuantum heterostructuresen_HK
dc.subjectQuantum-well devicesen_HK
dc.subjectQuantum-well interdiffusionen_HK
dc.subjectQuantumwell lasersen_HK
dc.titleOptical gain of interdiffused InGaAs-As and AlGaAs-GaAs quantum wellsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0018-9197&volume=34&issue=1&spage=157&epage=165&date=1998&atitle=Optical+gain+of+interdiffused+InGaAs-As+and+AlGaAs-GaAs+quantum+wellsen_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1109/3.655019en_HK
dc.identifier.scopuseid_2-s2.0-0031646407-
dc.identifier.hkuros38021-
dc.identifier.isiWOS:000071236600020-

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