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Characterization of spectral response of a quantum dots-in-a-well infrared focal plane array

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1928/3603

Characterization of spectral response of a quantum dots-in-a-well infrared focal plane array

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dc.contributor.author Lenz, Michael II
dc.date.accessioned 2008-02-07T18:08:04Z
dc.date.available 2008-02-07T18:08:04Z
dc.date.issued 2008-02-07T18:08:04Z
dc.date.submitted December 2007
dc.identifier.uri http://hdl.handle.net/1928/3603
dc.description.abstract Spectral characterization of a novel single bump, two-color InAs/InGaAs quantum dots-in-a-well (DWELL) infrared focal plane array (FPA) was undertaken and reported here. The hypothesis of the study is that the FPA will exhibit bias-tunable spectral response. Broadband and two-color performance measures of the DWELL FPA are discussed and presented. The DWELL structure is a hybrid of a quantum dot (QD) photodetector consisting of an active region composed of InAs quantum dots embedded in InGaAs quantum wells. The DWELL FPA demonstrates mid-wave infrared (MWIR) and long-wave infrared (LWIR) performance believed to be attributed to transitions from bound states in the dot to higher and lower lying energy states in the quantum well, respectively. The DWELL samples were grown by molecular beam epitaxy (MBE) and fabricated into 320 x 256 focal plane arrays with indium bumps via standard lithography at the University of New Mexico (UNM). The samples were hybridized to Indigo Systems Corporation ISC9705 read out integrated circuits and investigated with a SE-IR Corporation CamIRa™ test system. The DWELL FPA exhibited temporal noise equivalent difference in temperature (NEDT) values of 43mK and 63mK (MWIR and LWIR respectively) at 77K. en_US
dc.format.extent 1218010 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en_US
dc.subject Infrared en_US
dc.subject focal plane array (FPA) en_US
dc.subject spectral response en_US
dc.subject two-color en_US
dc.title Characterization of spectral response of a quantum dots-in-a-well infrared focal plane array en_US
dc.type Thesis en_US
dc.description.degree Master of Science Electrical Engineering (MSEE) en
dc.description.level Masters en
dc.description.department University of New Mexico. Dept. of Electrical and Computer Engineering en
dc.description.advisor Krishna, Sanjay
dc.description.committee-member Brueck, Steven
dc.description.committee-member Dawson, Ralph
dc.description.committee-member Lester, Luke


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