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Diode-pumped femtosecond Yb : KGd(WO4)(2) laser with 1.1-W average power

Diode-pumped femtosecond Yb : KGd(WO4)(2) laser with 1.1-W average power

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  • F. Brunner
  • G. J. Spühler
  • J. Aus der Au
  • L. Krainer
  • F. Morier-Genoud
  • R. Paschotta
  • N. Lichtenstein
  • S. Weiss
  • C. Harder
  • A. A. Lagatsky
  • A. Abdolvand
  • N. V. Kuleshov
  • U. Keller

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Original languageEnglish
Pages (from-to)1119-1121
Number of pages3
JournalOptics Letters
Issue number15
StatePublished - 2000


We demonstrate what is to our knowledge the first mode-locked Yb:KGd(WO4)(2) laser. Using a semiconductor saturable-absorber mirror for passive mode locking, we obtain pulses of 176-fs duration with an average power of 1.1 W and a peak power of 64 kW at a center wavelength of 1037 nm. We achieve pulses as short as 112 fs at a lower output power. The laser is based on a standard delta cavity and pumped by two high-brightness laser diodes, making the whole system very simple and compact. Tuning the laser by means of a knife-edge results in mode-locked pulses within a wavelength range from 1032 to 1054 nm. In cw operation, we achieve output powers as high as 1.3 W. (C) 2000 Optical Society of America OCIS codes: 140.3480, 140.3580, 140.4050, 140.5680.



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