Diode-pumped gigahertz femtosecond Yb:KGW laser with a peak power of 3.9 kW
S. Pekarek1, C. Fiebig2 , M.C. Stumpf1, A.E.H. Oehler1, K. Paschke2, G. Erbert2, T. Südmeyer1, and U. Keller1
Published in:
Opt. Express, vol. 18, no. 16, pp. 16320-16326 (2010).
Abstract:
We present a diode-pumped Yb:KGW laser with a repetition rate of 1 GHz and a pulse duration of 281 fs at a wavelength of 1041 nm. A high brightness distributed Bragg reflector tapered diode laser is used as a pump source. Stable soliton modelocking is achieved with a semiconductor saturable absorber mirror (SESAM). The obtained average output power is 1.1 W and corresponds to a peak power of 3.9 kW and a pulse energy of 1.1 nJ. With harmonic modelocking we could increase the pulse repetition rate up to 4 GHz with an average power of 900 mW and a pulse duration of 290 fs. This Yb:KGW laser has a high potential for stable frequency comb generation.
1 Department of Physics, Institute of Quantum Electronics, ETH Zurich, 8093 Zurich, Switzerland
2 Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, D-12489 Berlin, Germany
OCIS codes:
(140.4050) Mode-locked lasers; (140.3615) Laser, ytterbium; (140.3480) Laser, diode-pumped; (140.3580) Lasers, solid-state.
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