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1.2-micron multi-section quantum dot superluminescent diodes

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1928/6913

1.2-micron multi-section quantum dot superluminescent diodes

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dc.contributor.author Saiz, Therese
dc.date.accessioned 2008-09-26T16:51:30Z
dc.date.available 2008-09-26T16:51:30Z
dc.date.issued 2008-09-26T16:51:30Z
dc.date.submitted July 2008
dc.identifier.uri http://hdl.handle.net/1928/6913
dc.description.abstract Superluminescent diodes (SLD) with a center wavelength of 1.2µm are of interest for use in medical imaging of skin tissue especially in the field of optical coherence tomography (OCT). In this thesis a ridge-waveguide multi-section quantum dot SLD that emits at 1.2µm with a bandwidth greater than 100nm and a power greater than 0.2mW is presented. The multi-section SLD allows simultaneous tuning of the ground state emission and excited state emission, resulting in wide bandwidth and high power. Theoretical equations describing the intensity output of the multi-section SLD configuration are presented. It is found that these equations are able to closely predict the measured SLD intensity as function of wavelength given measured gain and spontaneous emission spectra of the quantum dot active region. The gain and spontaneous emission data are derived from the improved segmented contact measurement technique that is especially compatible with the multi-section device approach and the stringent requirements on accuracy imposed by the low-gain quantum dot materials. Within the theoretical model, various approaches to simulating the SLD spectra are also investigated and compared. en_US
dc.language.iso en_US en_US
dc.subject quantum en_US
dc.subject dot en_US
dc.subject SLD en_US
dc.subject superluminescent en_US
dc.subject multi en_US
dc.subject section en_US
dc.subject quantum dot en_US
dc.subject ridge en_US
dc.subject.lcsh Light emitting diodes.
dc.subject.lcsh Optical amplifiers.
dc.subject.lcsh Quantum dots.
dc.subject.lcsh Optical coherence tomography.
dc.title 1.2-micron multi-section quantum dot superluminescent diodes en_US
dc.type Thesis en_US
dc.description.degree Master of Science in Electrical Engineering en_US
dc.description.level Masters en_US
dc.description.department University of New Mexico. Dept. of Electrical Engineering and Computer Engineering en_US
dc.description.advisor Lester, Luke
dc.description.committee-member Krishna, Sanjay
dc.description.committee-member Grillot, Frederic


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