Effect of internal optical loss on the modulation bandwidth of a quantum dot laser

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dc.contributorVirginia Techen
dc.contributor.authorWu, Y. C.en
dc.contributor.authorSuris, R. A.en
dc.contributor.authorAsryan, Levon V.en
dc.contributor.departmentMaterials Science and Engineering (MSE)en
dc.date.accessed2014-03-27en
dc.date.accessioned2014-04-16T14:16:41Zen
dc.date.available2014-04-16T14:16:41Zen
dc.date.issued2012-03-01en
dc.description.abstractWe show that the internal optical loss, which increases with free-carrier density in the waveguide region, considerably reduces the modulation bandwidth omega(-3 dB) of a quantum dot laser. At a certain optimum value j(0)(opt) of the dc component of the injection current density, the maximum bandwidth omega(max)(-3dB) is attained and the modulation response function becomes as flat as possible. With internal loss cross-section sigma(int) increasing and approaching its maximum tolerable value, omega(max)(-3dB) decreases and becomes zero. As with j(0)(opt), there also exists the optimum cavity length, at which omega(-3 dB) is highest; the larger is sigma(int), the longer is the optimum cavity. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3697683]en
dc.description.sponsorshipU.S. Army Research Office (Grant No. W911-NF-08-1-0462)en
dc.description.sponsorshipChina Scholarship Councilen
dc.description.sponsorshipRussian Foundation for Basic Research (Grant No. 11-02-00573)en
dc.description.sponsorshipProgram "Fundamental Research in Nanotechnology and Nanomaterials" of the Presidium of the Russian Academy of Sciencesen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationWu, Yuchang; Suris, Robert A.; Asryan, Levon V., "Effect of internal optical loss on the modulation bandwidth of a quantum dot laser," Appl. Phys. Lett. 100, 131106 (2012); http://dx.doi.org/10.1063/1.3697683en
dc.identifier.doihttps://doi.org/10.1063/1.3697683en
dc.identifier.issn0003-6951en
dc.identifier.urihttp://hdl.handle.net/10919/47377en
dc.identifier.urlhttp://scitation.aip.org/content/aip/journal/apl/100/13/10.1063/1.3697683en
dc.language.isoen_USen
dc.publisherAIP Publishingen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectIntervalence band absorptionen
dc.subjectConfined active-regionen
dc.subjectSemiconductor-lasersen
dc.subjectDiode-lasersen
dc.subjectWell lasersen
dc.subjectThresholden
dc.subjectPoweren
dc.subjectGainen
dc.titleEffect of internal optical loss on the modulation bandwidth of a quantum dot laseren
dc.title.serialApplied Physics Lettersen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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