Show simple item record

dc.contributor.advisorFallahi, Mahmoud
dc.contributor.authorVail, Nicholas
dc.creatorVail, Nicholas
dc.date.accessioned2019-09-17T02:03:59Z
dc.date.available2019-09-17T02:03:59Z
dc.date.issued2019
dc.identifier.urihttp://hdl.handle.net/10150/634393
dc.description.abstractLateral far field blooming or slow axis divergence is a common problem of high-power diode lasers and there are many different factors that contribute. Some of the major factors include temperature, carrier-induced effects, high order modes, mode types, and optical confinement. In this study, these properties were characterized and quantified in order to build a model to assess and simulate lateral divergence. A novel device called a spectral mapper was built to separate out lateral and longitudinal modes and their changes as current is varied. The collected and calculated data was input into LaserMOD, where simulations were run to determine the extent to which core width, mode number and refractive index changes modify the divergence of the device. While the modelling software was unable to support large numbers of modes due to weak confinement and also underestimated refractive index change in multimodal devices, the model and simulations were still able to quantify that more modes led to more lateral divergence. These tests and models can be used to improve coupling performance and hopefully provide insight into how high-power laser diodes can be further integrated with fiber lasers.
dc.language.isoen
dc.publisherThe University of Arizona.
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction, presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
dc.subjecthigh power semiconductor laser
dc.subjectSlow axis divergence
dc.subjectthermal lensing
dc.titleLateral Divergence in High Power Laser Diodes: Method of Analysis for Assessing Contributing Factors
dc.typetext
dc.typeElectronic Thesis
thesis.degree.grantorUniversity of Arizona
thesis.degree.levelmasters
dc.contributor.committeememberPau, Stanley
dc.contributor.committeememberCrowley, Mark
thesis.degree.disciplineGraduate College
thesis.degree.disciplineOptical Sciences
thesis.degree.nameM.S.
refterms.dateFOA2019-09-17T02:03:59Z


Files in this item

Thumbnail
Name:
azu_etd_17425_sip1_m.pdf
Size:
3.637Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record