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Proceedings Paper

High energetic and highly stable pulses from a Ho:YLF regenerative amplifier
Author(s): Peter Kroetz; Axel Ruehl; Gourab Chatterjee; Anne-Laure Calendron; Krishna Muraria; Huseyin Cankaya; Franz X. Kärtnera; Ingmar Hartl; R. J. Dwayne Miller
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Paper Abstract

We present results from our Ho:YLF regenerative amplifier (RA) producing up to 6.9 mJ at a repetition rate of 1 kHz and up to 12.9 mJ at a repetition rate of 10 Hz. At 1 kHz, we observe strongly bifurcating pulses, starting with certain round trip number, but the measurements identify a highly stable operation point that lies “hidden” beyond the instability region. This operation point allows the extraction of highly stable and high energetic output pulses. Suppression of bifurcation in our system is presented for repetition rates below 750 Hz and Ho:YLF crystal holder temperatures of 2.5 °C. We furthermore present a stability optimization routine for our Ho:YLF RA that was operated close to gain depletion at a repetition rate of 100 Hz. By varying the Ho:YLF crystal holder temperature the gain depletion level could be fine adjusted, resulting in a highly stable RA system with measured pulse fluctuations of only 0.35 %.

Paper Details

Date Published: 16 March 2016
PDF: 10 pages
Proc. SPIE 9726, Solid State Lasers XXV: Technology and Devices, 97260S (16 March 2016); doi: 10.1117/12.2212236
Show Author Affiliations
Peter Kroetz, Ctr. for Free-Electron Laser Science (Germany)
Deutsches Elektronen-Synchrotron (Germany)
Axel Ruehl, Deutsches Elektronen-Synchrotron (Germany)
Gourab Chatterjee, Ctr. for Free-Electron Laser Science (Germany)
Max-Planck-Institut für Struktur und Dynamik der Materie (Germany)
Anne-Laure Calendron, Ctr. for Free-Electron Laser Science (Germany)
Deutsches Elektronen-Synchrotron (Germany)
Univ. Hamburg (Germany)
Krishna Muraria, Ctr. for Free-Electron Laser Science (Germany)
Deutsches Elektronen-Synchrotron (Germany)
Univ. Hamburg (Germany)
Huseyin Cankaya, Ctr. for Free-Electron Laser Science (Germany)
Deutsches Elektronen-Synchrotron (Germany)
Univ. Hamburg (Germany)
Franz X. Kärtnera, Deutsches Elektronen-Synchrotron (Germany)
Univ. Hamburg (Germany)
Ingmar Hartl, Deutsches Elektronen-Synchrotron (Germany)
R. J. Dwayne Miller, Ctr. for Free-Electron Laser Science (Germany)
Max-Planck-Institut für Struktur und Dynamik der Materie (Germany)
Univ. Hamburg (Germany)


Published in SPIE Proceedings Vol. 9726:
Solid State Lasers XXV: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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