Persistent Link:
http://hdl.handle.net/10150/193657
Title:
Novel Devices for Fiber Laser Application
Author:
Kieu, Khanh Quoc
Issue Date:
2007
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
In this thesis, several novel devices for fiber laser are proposed and demonstrated. The first type of device is based on modal interference in non-adiabatic fiber tapers. Using such tapers, we demonstrate a simple technique to tune the wavelength of an all-fiber erbium-doped laser. Next, we systematically investigate the use of non-adiabatic fiber tapers for sensing purposes. As a result of this investigation, we have built and characterized several simple and sensitive sensors for highly accurate measurements of strain, temperature, and refractive index.Another class of devices investigated in this dissertation is based on micro-cavities. We propose and demonstrate, for the first time, the use of high-Q micro-spherical resonators as feedback mirrors for fiber lasers. The advantages of these new "mirrors" include compactness, low cost, tunability of the reflection coefficient, and an extremely narrow reflection bandwidth.We demonstrate single-frequency and Q-switched fiber lasers based on micro-spherical mirrors. The next natural step in the development of fiber-lasers involves the phenomenon of mode-locking. For this purpose, we developed a novel type of saturable absorber based on a fiber-taper embedded in a carbon nanotube/polymer composite material (FTECntPC). Subsequently, mode-locking was successfully demonstrated in an erbium-doped fiber laser using the aforementioned FTECntPC saturable absorber. We have thoroughly investigated the dynamics of passively mode-locked fiber lasers that incorporate the FTECntPC saturable absorber. With this new saturable absorber we have been able to obtain the highest pulse energies that have been generated to date directly from a soliton all-fiber laser. In addition, with the help of the novel saturable absorber, we have been able to build and analyze the first bi-directional passively mode-locked fiber laser.
Type:
text; Electronic Dissertation
Keywords:
Optical Sciences
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Optical Sciences; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Mansuripur, Masud

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleNovel Devices for Fiber Laser Applicationen_US
dc.creatorKieu, Khanh Quocen_US
dc.contributor.authorKieu, Khanh Quocen_US
dc.date.issued2007en_US
dc.publisherThe University of Arizona.en_US
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 or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractIn this thesis, several novel devices for fiber laser are proposed and demonstrated. The first type of device is based on modal interference in non-adiabatic fiber tapers. Using such tapers, we demonstrate a simple technique to tune the wavelength of an all-fiber erbium-doped laser. Next, we systematically investigate the use of non-adiabatic fiber tapers for sensing purposes. As a result of this investigation, we have built and characterized several simple and sensitive sensors for highly accurate measurements of strain, temperature, and refractive index.Another class of devices investigated in this dissertation is based on micro-cavities. We propose and demonstrate, for the first time, the use of high-Q micro-spherical resonators as feedback mirrors for fiber lasers. The advantages of these new "mirrors" include compactness, low cost, tunability of the reflection coefficient, and an extremely narrow reflection bandwidth.We demonstrate single-frequency and Q-switched fiber lasers based on micro-spherical mirrors. The next natural step in the development of fiber-lasers involves the phenomenon of mode-locking. For this purpose, we developed a novel type of saturable absorber based on a fiber-taper embedded in a carbon nanotube/polymer composite material (FTECntPC). Subsequently, mode-locking was successfully demonstrated in an erbium-doped fiber laser using the aforementioned FTECntPC saturable absorber. We have thoroughly investigated the dynamics of passively mode-locked fiber lasers that incorporate the FTECntPC saturable absorber. With this new saturable absorber we have been able to obtain the highest pulse energies that have been generated to date directly from a soliton all-fiber laser. In addition, with the help of the novel saturable absorber, we have been able to build and analyze the first bi-directional passively mode-locked fiber laser.en_US
dc.typetexten_US
dc.typeElectronic Dissertationen_US
dc.subjectOptical Sciencesen_US
thesis.degree.namePh.D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplineOptical Sciencesen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairMansuripur, Masuden_US
dc.contributor.committeememberAnderson, Brian P.en_US
dc.contributor.committeememberJones, Jasonen_US
dc.identifier.proquest2316en_US
dc.identifier.oclc659748176en_US
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