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Model microcavity laser with CdSe/CdS quantum dots as lasing media
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Optics and Photonics, OFO.
2016 (English)In: Laser physics, ISSN 1054-660X, E-ISSN 1555-6611, Vol. 26, no 2, 025004Article in journal (Refereed) PublishedText
Abstract [en]

A model is established for a microcavity laser with cadmium selenium/cadmium sulfide (CdSe/CdS) core/shell quantum dots (QDs) as a lasing medium, The research was organised to develop and solve the rate equations for the above mentioned microcavity laser to calculate the output parameters during lasing. Using time-resolved fluorescence spectroscopy, the radiative life time of the lasing medium was measured along with its fluorescence and absorption spectra. A model is also established on the basis of the segment contact method (SCM) to demonstrate the threshold gain profile using the absorption spectrum of CdSe/CdS core/shell type II QDs residing in the cavity. A laser cavity of size 1 mu m was pumped with an optical source (532 nm) to achieve an optimised laser peak at 470nm,

Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2016. Vol. 26, no 2, 025004
Keyword [en]
laser, microcavity, quantum dots, threshold gain, optics
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Identifiers
URN: urn:nbn:se:kth:diva-187852DOI: 10.1088/1054-660X/26/2/025004ISI: 000375156400004ScopusID: 2-s2.0-84958205997OAI: oai:DiVA.org:kth-187852DiVA: diva2:931796
Note

QC 20160530

Available from: 2016-05-30 Created: 2016-05-30 Last updated: 2016-05-30Bibliographically approved

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Popov, Sergei
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Optics and Photonics, OFO
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