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The effect of barri...
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Akram, NadeemKTH,Mikroelektronik och Informationsteknik, IMIT
(author)
The effect of barrier composition on the vertical carrier transport and lasing properties of 1.55-mu m multiple quantum-well structures
- Article/chapterEnglish2006
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LIBRIS-ID:oai:DiVA.org:kth-24236
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-24236URI
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https://doi.org/10.1109/JQE.2006.876710DOI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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QC 20100827
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In this paper, the effect of barrier bandgap and composition on the optical performance of 1.55-mu m InGaAsP/In-GaAsP and InGaAsP/InGaAlAs multiple quantum-well structures and Fabry-Perot lasers is evaluated experimentally. Direct vertical carrier transport measurements were performed through strain-compensated multiple quantum-well (MQW) test structures using femto-second laser pulse excitation and time-resolved photoluminescence up-conversion method. MQW test structures were grown with different barrier composition (InGaAsP and InGaAlAs) and barrier bandgap (varied from lambda(g) = 1440 to 1260 nm) having different conduction band Delta E-c and valence band discontinuity Delta E-v, while keeping the same InGaAsP well composition for all the structures. The ambipolar carrier transport was found to be faster in the structures with lower valence band discontinuity Delta E-v. Regrown semi-insulating buried heterostructure Fabry-Perot (SIBH-FP) lasers were fabricated from similar QWs and their static light-current-voltage characteristics (including optical gain and chirp spectra below threshold) and thermal characteristics were measured. Lasers with InGaAlAs barrier showed improved high-temperature operation, higher optical gain, higher differential gain, and lower chirp, making them suitable candidates for high-bandwidth directly modulated uncooled laser applications.
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Added entries (persons, corporate bodies, meetings, titles ...)
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Kjebon, OlleKTH,Mikroelektronik och Informationsteknik, IMIT(Swepub:kth)u19elug1
(author)
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Marcinkevičius, SauliusKTH,Mikroelektronik och Informationsteknik, IMIT(Swepub:kth)u16tz6ld
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Schatz, RichardKTH,Mikroelektronik och Informationsteknik, IMIT(Swepub:kth)u1z793nt
(author)
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Berggren, JesperKTH,Mikroelektronik och Informationsteknik, IMIT(Swepub:kth)u13fhsee
(author)
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Olsson, FredrikKTH,Mikroelektronik och Informationsteknik, IMIT(Swepub:kth)u1uk3g2x
(author)
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Lourdudoss, SebastianKTH,Mikroelektronik och Informationsteknik, IMIT(Swepub:kth)u16044fg
(author)
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KTHMikroelektronik och Informationsteknik, IMIT
(creator_code:org_t)
Related titles
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In:IEEE Journal of Quantum Electronics42:7, s. 713-7140018-91971558-1713
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