20 nJ 200 fs all-fiber highly chirped dissipative soliton oscillator.

The dissipative solitons (DS) generated in fiber oscillators with mode-locking mechanism based on nonlinear polarization evolution in a single-mode fiber exhibit stability and energy limits at the cavity lengthening. We demonstrate an alternative approach that enables us to increase the cavity length of the DS oscillator up to 30 m, namely, by the use of a long section of polarization-maintaining (PM) fiber in an all-fiber cavity configuration. We have also identified the next limit of energy scaling related to the onset of Raman conversion of the DS spectrum. The maximum energy of the stable highly chirped DS realized with a 5.5 μm core PM fiber, amounts to ~20 nJ in ~200 fs pulses after a grating compressor. As a next step, energy scaling by means of a fiber core enlargement is discussed.

[1]  Bozena Jaskorzynska,et al.  Frequency chirp and spectra due to self-phase modulation and stimulated Raman scattering influenced by pulse walk-off in optical fibers , 1987 .

[2]  Khanh Kieu,et al.  Scaling of dissipative soliton fiber lasers to megawatt peak powers by use of large-area photonic crystal fiber. , 2010, Optics letters.

[3]  Olga V. Shtyrina,et al.  Generation and scaling of highly-chirped dissipative solitons in an Yb-doped fiber laser , 2012 .

[4]  Dietmar Kracht,et al.  All-fiber ytterbium femtosecond laser without dispersion compensation. , 2008, Optics express.

[5]  Andy Chong,et al.  Environmentally stable all-normal-dispersion femtosecond fiber laser. , 2008, Optics letters.

[6]  Andy Chong,et al.  All-normal-dispersion femtosecond fiber laser with pulse energy above 20 nJ. , 2007, Optics letters.

[7]  Frank W. Wise,et al.  Dissipative solitons in normal-dispersion fiber lasers , 2008 .

[8]  S. Kobtsev,et al.  High-energy femtosecond 1086/543-nm fiber system for nano- and micromachining in transparent materials and on solid surfaces , 2011 .

[9]  Jia Haur Wong,et al.  High-energy dissipative soliton with MHz repetition rate from an all-fiber passively mode-locked laser , 2012 .

[10]  P. Grelu,et al.  Dissipative solitons for mode-locked lasers , 2012, Nature Photonics.

[11]  Sergey A. Babin,et al.  Highly chirped dissipative solitons as a one-parameter family of stable solutions of the cubic–quintic Ginzburg–Landau equation , 2011 .

[12]  Vladimir L. Kalashnikov,et al.  Heavily-chirped solitary pulses in the normal dispersion region: New solutions of the cubic-quintic complex Ginzburg-Landau equation , 2005 .

[13]  F. Wise,et al.  Generation of 2-nJ pulses from a femtosecond ytterbium fiber laser. , 2003, Optics letters.

[14]  J. Limpert,et al.  Self-starting self-similar all-polarization maintaining Yb-doped fiber laser. , 2005, Optics Express.

[15]  Jörg Neumann,et al.  Sub-80-fs pulses from an all-fiber-integrated dissipative-soliton laser at 1 µm. , 2011, Optics express.