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dc.contributor.authorRobin, Craig
dc.date.accessioned2011-08-30T22:37:11Z
dc.date.available2011-08-30T22:37:11Z
dc.date.issued2011-08-30
dc.date.submittedJuly 2011
dc.identifier.urihttp://hdl.handle.net/1928/13126
dc.description.abstractThis dissertation presents experimental and theoretical studies of high power, single-frequency, ytterbium-doped photonic crystal fiber amplifiers. The objective of this effort is to identify issues which limit power scaling and develop novel techniques to overcome these limitations. Historically, stimulated Brillouin scattering (SBS) has been the primary obstacle in the realization of high power single-frequency fiber amplifiers. A novel acoustically tailored photonic crystal fiber design, having a reduced Brillouin gain coefficient of 1.2x10-11 m/W, is demonstrated. The fiber design is such that it may be used in conjunction with other SBS mitigation techniques, which increases the nonlinear threshold beyond the current state of the art. In the successful suppression of SBS, a new regime of single-frequency photonic crystal fiber amplifier power scaling is explored. Instabilities in the transverse mode is observed at increasing output powers. Mitigation of this effect is demonstrated experimentally. This empirical data is used as the basis for a theoretical treatment of the problem, which provides direction for future fiber amplifier designs. The culmination of this work results in the successful utilization of the acoustically tailored photonic crystal fiber in a single-frequency counter-pumped amplifier configuration, yielding close to 500 W output power and near diffraction-limited beam quality.en_US
dc.description.sponsorshipAir Force Research Laboratory, Air Force Office of Scientific Research, High Energy Laser Joint Technology Officeen_US
dc.language.isoen_USen_US
dc.subjectphotonic crystal fiberen_US
dc.subjectfiber amplifieren_US
dc.subjectstimulated Brillouin scatteringen_US
dc.subjectsingle-frequencyen_US
dc.subject.lcshOptical amplifiers.
dc.subject.lcshOptical fiber communication.
dc.subject.lcshPhotonic crystals.
dc.subject.lcshBrillouin scattering.
dc.titleNovel approaches to power scaling of single-frequency photonic crystal fiber amplifiersen_US
dc.typeDissertationen_US
dc.description.degreeOptical Sciences and Engineeringen_US
dc.description.levelDoctoralen_US
dc.description.departmentUniversity of New Mexico. Dept. of Electrical and Computer Engineeringen_US
dc.description.advisorLester, Luke
dc.description.committee-memberSheik-Bahae, Mansoor
dc.description.committee-memberDajani, Iyad
dc.description.committee-memberDiels, Jean-Claude


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