4.6 Article

High-brightness fiber laser-pumped 68 fs-2.3 W Kerr-lens mode-locked Yb:CaF2 oscillator

Journal

OPTICS LETTERS
Volume 38, Issue 20, Pages 4008-4010

Publisher

OPTICAL SOC AMER
DOI: 10.1364/OL.38.004008

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Funding

  1. Direction Generale de l'Armement et de la Recherche
  2. European Community through the I3 LASERLAB II JRA2 Happie
  3. Conseil Regional d'Aquitaine
  4. Lougre Brillant program, Aquitaine Valorisation
  5. CNRS national network FEMTO through the entitled HABRY program
  6. CNRS national network CMDO+ through the entitled HABRY program
  7. Agence Nationale de la Recherche (ANR) through the FEMTOC-RYBLE project [ANR 2010 BLANC 0421]
  8. Agence Nationale de la Recherche (ANR) through the PAMPERO project [ANR-12-B509-0033]

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By using a high-brightness fiber pump laser, we demonstrate a pure Kerr-lens mode-locked (ML) Yb:CaF2 oscillator. The laser delivers 68 fs pulses with 2.3 W average power at 73 MHz repetition rate and an optical-to-optical efficiency of 33% is achieved. To the best of our knowledge, this is the first demonstration of Kerr-lens mode-locking in Yb:CaF2. Incidentally, we report here the highest average power ever achieved for a sub-100-fs active Kerr-lens ML Yb-bulk oscillator. (C) 2013 Optical Society of America

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