Characterization of optically pumped interband cascade lasers.

dc.contributor.advisorOlafsen, Linda J.
dc.creatorRumman, Nazifa, 1992-
dc.date.accessioned2019-12-04T13:55:59Z
dc.date.available2019-12-04T13:55:59Z
dc.date.created2019-08
dc.date.issued2019-07-12
dc.date.submittedAugust 2019
dc.date.updated2019-12-04T13:55:59Z
dc.description.abstractInterband cascade laser (ICL) devices have been optically pumped and the results observed are presented here. The samples being used for this research were grown by molecular beam epitaxy at the Naval Research Laboratory. Light-light curves (output light vs. input light) were obtained using a pulsed Nd:YAG laser and an optical parametric oscillator (OPO) that generated a tunable infrared beam as the pump source. Laser output power was measured as a function of pump intensity at different pump wavelengths ranging from 1800 to 1940 nm. The threshold pump intensity and slope efficiency were also determined from the light-light curves. Additionally, samples with a graphene contact layer were optically pumped and also evidenced lasing characteristics. This demonstrates the feasibility of taking advantage of graphene to make a conducting window for collecting the spontaneous emission for further improvement of ICLs. Some ICL samples were also electrically pumped and light-current (output light vs. injected current) curves were measured, allowing a determination of the threshold current density and characteristic temperature of the devices for temperatures ranging from 78 K to 280 K.
dc.format.mimetypeapplication/pdf
dc.identifier.urihttps://hdl.handle.net/2104/10718
dc.rights.accessrightsNo access - Contact librarywebmaster@baylor.edu
dc.subjectSemiconductor lasers. ICLs. Optical pumping. Threshold and efficiency of ICLs.
dc.titleCharacterization of optically pumped interband cascade lasers.
dc.typeThesis
dc.type.materialtext
local.embargo.lift2024-08-01
local.embargo.terms2024-08-01
thesis.degree.departmentBaylor University. Dept. of Electrical & Computer Engineering.
thesis.degree.grantorBaylor University
thesis.degree.levelMasters
thesis.degree.nameM.S.E.C.E.

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