Article

Sub-80 fs dissipative soliton large-mode-area fiber laser.

Friedrich-Schiller-University Jena, Institute of Applied Physics, Albert-Einstein-Strasse 15, 07745 Jena, Germany.
Optics Letters (Impact Factor: 3.18). 07/2010; 35(13):2311-3. DOI: 10.1364/OL.35.002311
Source: PubMed

ABSTRACT We report on high-energy ultrashort pulse generation from an all-normal-dispersion large-mode-area fiber laser by exploiting an efficient combination of nonlinear polarization evolution (NPE) and a semiconductor-based saturable absorber mode-locking mechanism. The watt-level laser directly emits chirped pulses with a duration of 1 ps and 163 nJ of pulse energy. These can be compressed to 77 fs, generating megawatt-level peak power. Intracavity dynamics are discussed by numerical simulation, and the intracavity pulse evolution reveals that NPE plays a key role in pulse shaping.

Download full-text

Full-text

Available from: Caroline Lecaplain, Jul 01, 2015
1 Follower
 · 
248 Views
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: We demonstrate gain-guided dissipative soliton operation of a linearly polarized Yb-doped fiber laser, mode-locked by carbon nanotubes. In the regime of low nonlinear phase shift per cavity roundtrip, a dissipative soliton pulse can be supported by the finite gain bandwidth, without the need for strong spectral selection. The gain-guiding dynamics are confirmed by simulations.
    IEEE Photonics Journal 06/2012; 4(3):1058-1064. DOI:10.1109/JPHOT.2012.2202314 · 2.33 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: We report on a systematic study of an environmentally stable mode-locked Yb-doped fiber laser operating in the chirped-pulse regime. The linear cavity chirped-pulse fiber laser is constructed with a saturable absorber mirror as nonlinear mode-locking mechanism and a nonlinearity-free transmission-grating-based stretcher/compressor for dispersion management. Mode-locked operation and pulse dynamics from strong normal to strong anomalous total cavity dispersion in the range of +2.5 to −1.6 ps2 is experimentally studied. Strongly positively chirped pulses from 4.3 ps (0.01 ps2) to 39 ps (2.5 ps2) are obtained at normal net-cavity dispersion. In the anomalous dispersion regime, the laser generates average soliton feature negatively chirped pulses with autocorrelation pulse durations from 0.8 ps (−0.07 ps2) to 3.9 ps (−1.6 ps2). The lowered peak power due to the pulse stretching allows one to increase the double pulse threshold. Based on the numerical simulation, different regimes of mode locking are obtained by varying the intra-cavity dispersion, and the characteristics of average soliton, stretched-pulse, wave-breaking-free and chirped-pulse regimes are discussed.
    Applied Physics B 05/2012; 107(2). DOI:10.1007/s00340-012-5010-0 · 1.63 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: A SESAM-mode-locked, all-polarization-maintaining Ytterbium fiber laser producing picosecond pulses with narrow spectral bandwidth is presented. A simple linear all-fiber cavity without dispersion compensation is realized using a uniform fiber Bragg grating (FBG). Different cavity lengths are investigated and repetition rates down to 0.7 MHz are obtained. Bandwidth and pulse duration of the output pulses are mainly determined by the choice of FBG. Pulses between 30 and 200 ps are generated employing different FBGs with bandwidths between 17 and 96 pm. The experimental results are in good agreement with numerical simulations. The laser holds great potential for simple amplification setups without pulse picking.
    Applied Physics B 04/2012; 111(1). DOI:10.1007/s00340-012-5304-2 · 1.63 Impact Factor