Design and fabrication of quantum-dot lasers

Semiconductor lasers using quantum-dots in their active regions have been reported to exhibit significant performance advantages over their bulk semiconductor and quantum-well counterparts namely: low threshold current, high differential gain and highly temperature stable light-current characteristics. This thesis investigates the lasing characteristics of a ridge-waveguide laser containing seven layers of quantum dots as the active region. A summary of the electrical and optical performance data of the heterostructure quantum dot lasers, as well as previously fabricated quantum well lasers, is presented. The motivation of using InAs quantum dots in the active region is to produce near infrared emission for telecommunication applications.

Department dc:contributor.department

Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2008

Author dc:creator

• Nabanja, Sheila

Advisor dc:contributor.advisor

• Leslie A. Kolodziejski.

• Electrical Engineering and Computer Science.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/45888

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/45888