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Novel approaches to power scaling of single-frequency photonic crystal fiber amplifiers


Please use this identifier to cite or link to this item: http://hdl.handle.net/1928/13126

Novel approaches to power scaling of single-frequency photonic crystal fiber amplifiers

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dc.contributor.author Robin, Craig
dc.date.accessioned 2011-08-30T22:37:11Z
dc.date.available 2011-08-30T22:37:11Z
dc.date.issued 2011-08-30
dc.date.submitted July 2011
dc.identifier.uri http://hdl.handle.net/1928/13126
dc.description.abstract This 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.sponsorship Air Force Research Laboratory, Air Force Office of Scientific Research, High Energy Laser Joint Technology Office en_US
dc.language.iso en_US en_US
dc.subject photonic crystal fiber en_US
dc.subject fiber amplifier en_US
dc.subject stimulated Brillouin scattering en_US
dc.subject single-frequency en_US
dc.subject.lcsh Optical amplifiers.
dc.subject.lcsh Optical fiber communication.
dc.subject.lcsh Photonic crystals.
dc.subject.lcsh Brillouin scattering.
dc.title Novel approaches to power scaling of single-frequency photonic crystal fiber amplifiers en_US
dc.type Dissertation en_US
dc.description.degree Optical Sciences and Engineering en_US
dc.description.level Doctoral en_US
dc.description.department University of New Mexico. Dept. of Electrical and Computer Engineering en_US
dc.description.advisor Lester, Luke
dc.description.committee-member Sheik-Bahae, Mansoor
dc.description.committee-member Dajani, Iyad
dc.description.committee-member Diels, Jean-Claude

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