A gigahertz multimode-diode-pumped Yb:KGW enables a strong frequency comb offset beat signal | Zendy

Alexander Klenner | Zendy; M. Golling | Zendy; U. Keller | Zendy

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A gigahertz multimode-diode-pumped Yb:KGW enables a strong frequency comb offset beat signal

Author(s) -

Alexander Klenner,

M. Golling,

U. Keller

Publication year - 2013

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.21.010351

Subject(s) - materials science , optics , frequency comb , laser , beat (acoustics) , multi mode optical fiber , optoelectronics , fiber laser , comb generator , phase noise , optical fiber , physics

A high-power gigahertz SESAM modelocked Yb:KGW laser is pumped with a commercial multimode diode laser and enables a strong frequency comb offset beat signal without additional amplification or pulse compression. The ultrafast Yb:KGW solid-state laser oscillator generates 125-fs pulses at an average power of 3.4 W and a repetition rate of 1.06 GHz with a record-high peak power of 22.7 kW. An octave-spanning frequency comb was generated with a 1-m long highly nonlinear photonic crystal fiber (PCF) launching only 900 mW of the total average power with a PCF coupling efficiency of 70%. The frequency comb offset was successfully detected with a carrier-envelope offset (CEO) frequency beat signal of 30-dB signal-to-noise ratio for a resolution bandwidth of 100 kHz. The robust and simple pumping scheme based on a commercially available multimode diode laser makes this laser attractive for future frequency comb metrology applications.

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