High-repetition rate, high-power femtosecond fiber laser

B. Ortac; A. Hideur; M. Brunel; G. Martel

doi:10.1117/12.646192

23 February 2006 High repetition rate high power femtosecond fiber laser

B. Ortac, A. Hideur, M. Brunel, G. Martel

Proceedings Volume 6102, Fiber Lasers III: Technology, Systems, and Applications; 610225 (2006) https://doi.org/10.1117/12.646192
Event: Lasers and Applications in Science and Engineering, 2006, San Jose, California, United States

Abstract

We report passive harmonic mode locking of a high-power Yb-doped double-clad fiber laser operating in both the normal- and the anomalous-dispersion regimes with a fundamental repetition rate of 20.4 MHz. In the anomalous-dispersion regime (total cavity GVD of -0.1 ps2), 1-ps, 125-pJ pulses are emitted at a repetition rate of 408 MHz. When the total net dispersion is close to zero (about -0.004 ps2), 680 fs, 48 pJ pulses are emitted at a repetition rate higher than 2 GHz. The supermodes suppression is than about 25 dB. In the normal-dispersion regime (total cavity GVD of +0.047 ps2), 116-fs, 1.7-nJ pulses are emitted at a repetition rate of 102 MHz with a supermodes suppression of more than 60 dB. We also report a new regime of multiple pulsing emission observed with this fiber laser : the stable emission of two pairs of bound pulses exhibiting different time separations and uniformly separated in the same cavity round trip. Keywords: Harmonic mode locking, multiple pulsing, bound states.

Citation Download Citation

B. Ortac, A. Hideur, M. Brunel, and G. Martel "High repetition rate high power femtosecond fiber laser", Proc. SPIE 6102, Fiber Lasers III: Technology, Systems, and Applications, 610225 (23 February 2006); https://doi.org/10.1117/12.646192

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KEYWORDS

Mode locking

Picosecond phenomena

Fiber lasers

Solitons

Dispersion

Polarization

Femtosecond fiber lasers

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