Balancing gain narrowing with self phase modulation: 100-fs, 800-nJ from an all-fiber-integrated Yb amplifier

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dc.contributor.authorPavlov, Ihoren_US
dc.contributor.authorRybak, A.en_US
dc.contributor.authorCenel, C.en_US
dc.contributor.authorİlday, F. Ömeren_US
dc.coverage.spatialMunich, Germanyen_US
dc.date.accessioned2016-02-08T12:09:38Z
dc.date.available2016-02-08T12:09:38Z
dc.date.issued2013en_US
dc.departmentDepartment of Physicsen_US
dc.descriptionDate of Conference: 12-16 May 2013en_US
dc.description.abstractThere is much progress in Yb-fiber oscillator-amplifier systems, which enable generation of high-repetition-rate, microjoule energies and sub-picosecond pulse widths [1,2]. Given the extremely large total gain factors to reach microjoules starting from nanojoules, which is often in the range of 40-60 dB, due to losses, and the impact of mismatched high-order dispersion as temporal stretching and compression of pulses by large factors (30-40 dB) need to be employed. As a result of these challenges, most of the Yb-fiber amplifiers have resulted in pulse durations of several 100 fs or longer. While pulse durations in this range are suited for some applications, there are many cases where 100-fs or shorter pulses in microjoule range are required. Gain narrowing can be effectively countered by self-phase modulation (SPM) [3] by limiting amplification factor in each stage of amplification and through careful optimization of SPM and inversion level along the gain fiber. The conceptual template is readily present in the evolution of the pulse inside the oscillator cavity, where gain factors are often in the 10-50 range per roundtrip. To the extend that the B-integral and the gain distribution along the amplifier can be kept identical to the oscillator by proper scaling of the chirped pulse width and fiber mode area, the original oscillator can be preserved in arbitrary number of amplification stages. Here, we demonstrate a highly fiber-integrated master-oscillator power-amplifier (MOPA) system, from which - 1 μJ pulses are extracted and externally compressed to 100 fs by arranging amplification in each stage as close as possible to the intra-cavity evolution. To our knowledge, these results are the shortest demonstrated from all-fiber-integrated amplifier at the microjoule level. © 2013 IEEE.en_US
dc.identifier.doi10.1109/CLEOE-IQEC.2013.6801340en_US
dc.identifier.urihttp://hdl.handle.net/11693/28048
dc.language.isoEnglishen_US
dc.publisherIEEEen_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/CLEOE-IQEC.2013.6801340en_US
dc.source.title2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQECen_US
dc.subjectElectron opticsen_US
dc.subjectFiber amplifiersen_US
dc.subjectFibersen_US
dc.subjectIntegrated opticsen_US
dc.subjectModulationen_US
dc.subjectPower amplifiersen_US
dc.subjectQuantum electronicsen_US
dc.subjectSelf phase modulationen_US
dc.subjectYtterbiumen_US
dc.subjectAmplification factorsen_US
dc.subjectArbitrary numberen_US
dc.subjectCompression of pulseen_US
dc.subjectGain distributionen_US
dc.subjectHigh repetition rateen_US
dc.subjectHigh-order dispersionen_US
dc.subjectInversion levelsen_US
dc.subjectOscillator amplifieren_US
dc.subjectAmplificationen_US
dc.titleBalancing gain narrowing with self phase modulation: 100-fs, 800-nJ from an all-fiber-integrated Yb amplifieren_US
dc.typeConference Paperen_US

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