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Journal Article

Study on laser characteristics of Ho:YLF regenerative amplifiers: Operation regimes, gain dynamics, and highly stable operation points

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/persons/resource/persons136094

Krötz, Peter
Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science (CFEL)HamburgGermany;

/persons/resource/persons196586

Calendron, Anne-Laure
Center for Free-Electron Laser Science (CFEL)HamburgGermany;
International Max Planck Research School for Ultrafast Imaging & Structural Dynamics (IMPRS-UFAST), Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Department of Physics, University of Hamburg, Hamburg, Germany;
Centre for Ultrafast Imaging (CUI), University of Hamburg, Hamburg, Germany;

/persons/resource/persons187989

Chatterjee, Gourab
Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science (CFEL)HamburgGermany;

/persons/resource/persons195018

Murari, Krishna
Center for Free-Electron Laser Science (CFEL)HamburgGermany;
Deutsches Elektronen-Synchrotron (DESY)Hamburg,Germany;
International Max Planck Research School for Ultrafast Imaging & Structural Dynamics (IMPRS-UFAST), Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Department of Physics, University of Hamburg, Hamburg, Germany;

/persons/resource/persons136024

Miller, R. J. Dwayne
Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science (CFEL)HamburgGermany;
Centre for Ultrafast Imaging (CUI), University of Hamburg, Hamburg, Germany;
Departments of Chemistry and Physics, University of Toronto, Toronto, Canada;

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Citation

Krötz, P., Ruehl, A., Calendron, A.-L., Chatterjee, G., Cankaya, H., Murari, K., et al. (2017). Study on laser characteristics of Ho:YLF regenerative amplifiers: Operation regimes, gain dynamics, and highly stable operation points. Applied Physics B: Lasers and Optics. doi:10.1007/s00340-017-6704-0.

Abstract

We present a comprehensive study of laser pulse amplification of Ho:YLF regenerative amplifiers (RAs) with respect to operation regimes, gain dynamics, and output pulse stability. The findings are expected to be more generic than for this specific gain material. Operation regimes are distinguished with respect to pulse energy and the appearance of pulse instability, and are studied as a function of the repetition rate, seed energy, and pump intensity. The corresponding gain dynamics are presented, identifying highly stable operation points related to high-gain build-up during pumping and high-gain depletion during pulse amplification. Such operation points are studied numerically and experimentally as a function of several parameters, thereby achieving, for our Ho:YLF RA, highly stable output pulses with measured fluctuations of only 0.19% (standard deviation).