dc.contributor.authorZhu, Sheng
dc.contributor.authorPidishety, Shankar
dc.contributor.authorFeng, Yutong
dc.contributor.authorHong, Soonki
dc.contributor.authorDemas, Jeff
dc.contributor.authorSidharthan, Raghuraman
dc.contributor.authorYoo, Seongwoo
dc.contributor.authorRamachandran, Siddharth
dc.contributor.authorSrinivasan, Balaji
dc.contributor.authorNilsson, Johan
dc.identifier.citationZhu, S., Pidishety, S., Feng, Y., Hong, S., Demas, J., Sidharthan, R., . . . Nilsson, J. (2018). Multimode-pumped Raman amplification of a higher order mode in a large mode area fiber. Optics Express, 26(18), 23295-. doi:10.1364/OE.26.023295en_US
dc.description.abstractWe report the first demonstration of Raman amplification in a fiber of a single Bessel-like higher order mode using a multimode pump source. We amplify the LP08-mode with a 559-µm2 effective mode area at a signal wavelength of 1115 nm in a pure-silica-core step-index fiber. A maximum of 18 dB average power gain is achieved in a 9-m long gain fiber, with output pulse energy of 115 µJ. The Raman pump source comprises a pulsed 1060 nm ytterbium-doped fiber amplifier with V-value ~30, which is matched to the Raman gain fiber. The pump depletion as averaged over the signal pulses reaches 36.7%. The conversion of power from the multimode pump into the signal mode demonstrates the potential for efficient brightness enhancement with low amplification-induced signal mode purity degradation.en_US
dc.format.extent10 p.en_US
dc.relation.ispartofseriesOptics Expressen_US
dc.rights© 2018 Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.en_US
dc.subjectDRNTU::Engineering::Electrical and electronic engineeringen_US
dc.subjectFiber Optics Amplifiers And Oscillatorsen_US
dc.subjectNonlinear Opticsen_US
dc.titleMultimode-pumped Raman amplification of a higher order mode in a large mode area fiberen_US
dc.typeJournal Article
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.description.versionPublished versionen_US

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