Ionizing-Radiation-Induced Color Centers in YAG, Nd:YAG, and Cr:Nd:YAG: Developing and Analyzing a Radiation-Hard Laser Gain Medium

Persistent Link:
http://hdl.handle.net/10150/195883
Title:
Ionizing-Radiation-Induced Color Centers in YAG, Nd:YAG, and Cr:Nd:YAG: Developing and Analyzing a Radiation-Hard Laser Gain Medium
Author:
Glebov, Boris L.
Issue Date:
2010
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:
This report presents results from a series of experiments in which YAG samples (undoped, as well as doped with Nd and Cr3+) were exposed to ionizing radiation (gamma rays and UV). These experiments were performed for the purpose of investigating the various phtodarkening processes taking place in these materials in response to the ionizing radiation. The purpose of this investigation was to establish whether and how co-doping YAG with Cr3+ improves the material's resistance to photodarkening due to the ionizing radiation. The experiments tracked time-resolved transmittance of the samples at 1064 nm in immediate response a pulsed exposure to the ionizing radiation, as well as steady-state spectrally-resolved changed in the samples' optical absorption after the irradiation. The investigation revealed a number of photodarkening processes occurring in the samples in response to the ionizing radiation, both transient and permanent. It was further revealed that inclusion of Cr3+ ions in YAG significantly reduces these photodarkening processes, improving the material's radiation resistance. It was observed that materials containing at least 0.5 at% Cr3+ are essentially radiation-hardened, resisting both transient and steady-state changes in transmittance observed in the materials not containing Cr3+.
Type:
text; Electronic Dissertation
Keywords:
color centers; gamma radiation; radiation hardness; spectroscopy; UV radiation; YAG
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Optical Sciences; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Potter, Kelly S.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleIonizing-Radiation-Induced Color Centers in YAG, Nd:YAG, and Cr:Nd:YAG: Developing and Analyzing a Radiation-Hard Laser Gain Mediumen_US
dc.creatorGlebov, Boris L.en_US
dc.contributor.authorGlebov, Boris L.en_US
dc.date.issued2010en_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.abstractThis report presents results from a series of experiments in which YAG samples (undoped, as well as doped with Nd and Cr3+) were exposed to ionizing radiation (gamma rays and UV). These experiments were performed for the purpose of investigating the various phtodarkening processes taking place in these materials in response to the ionizing radiation. The purpose of this investigation was to establish whether and how co-doping YAG with Cr3+ improves the material's resistance to photodarkening due to the ionizing radiation. The experiments tracked time-resolved transmittance of the samples at 1064 nm in immediate response a pulsed exposure to the ionizing radiation, as well as steady-state spectrally-resolved changed in the samples' optical absorption after the irradiation. The investigation revealed a number of photodarkening processes occurring in the samples in response to the ionizing radiation, both transient and permanent. It was further revealed that inclusion of Cr3+ ions in YAG significantly reduces these photodarkening processes, improving the material's radiation resistance. It was observed that materials containing at least 0.5 at% Cr3+ are essentially radiation-hardened, resisting both transient and steady-state changes in transmittance observed in the materials not containing Cr3+.en_US
dc.typetexten_US
dc.typeElectronic Dissertationen_US
dc.subjectcolor centersen_US
dc.subjectgamma radiationen_US
dc.subjectradiation hardnessen_US
dc.subjectspectroscopyen_US
dc.subjectUV radiationen_US
dc.subjectYAGen_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.chairPotter, Kelly S.en_US
dc.contributor.committeememberSimmons, Joseph H.en_US
dc.contributor.committeememberParks, Harold G.en_US
dc.identifier.proquest11362en_US
dc.identifier.oclc752261225en_US
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