High-order dispersion effects in solitary mode-locked lasers: side-band generation

Lin, Qimeng; Sorokina, Irina T.

doi:10.1016/s0030-4018(98)00263-6

Cited by 22 publications

(18 citation statements)

References 15 publications

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“…As an additional destabilizing factor, the dispersive perturbations in the laser system with self-phase modulation and negative net-GDD give rise to the spectral sidebands [1], [37], [38]. Their position in the absence of the higher order dispersion can be found from the condition , where , 2 , and are the normalized to inverse cavity length wave numbers of the dispersive wave, solitary wave, and periodic perturbation, respectively, is the sideband frequency, is the width of the soliton-like pulse with the shape , and is an integer.…”

Section: A Negative Gddmentioning

confidence: 99%

Multipulse operation and limits of the Kerr-lens mode-locking stability

Калашников

Sorokin

Sorokina

2003

IEEE J. Quantum Electron.

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Abstract-Numerical analysis in combination with the experimental data for Cr 2+ :ZnSe as well as Ti:sapphire lasers reveal the following main mechanisms of multiple-pulse generation for the Kerr-lens mode-locked solid-state lasers: 1) continuum amplification due to a spectral loss growth for ultrashort or chirped pulses and 2) a bounded perturbation rise for high-energy pulses. The role of such laser parameters as gain saturation and relaxation, saturable and unsaturable loss, self-phase modulation, Kerr-lensing, and pump intensity is analyzed. This analysis provides basic directions for single-pulse stability enhancement and for multiple-pulse generation control.

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Section: A Negative Gddmentioning

confidence: 99%

Multipulse operation and limits of the Kerr-lens mode-locking stability

Калашников

Sorokin

Sorokina

2003

IEEE J. Quantum Electron.

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“…The spectral energy of the dispersive wave was estimated to be 6.9% of the total spectral energy, and its presence did not deteriorate the long-term stability of the mode-locked laser. The coexistence of dispersive waves with the main modelocked pulse has been reported and analyzed previously [27][28][29][30][31][32]. These waves co-propagate with the main pulse, and some of the pulse energy is coupled out to the dispersive waves if they are phase-matched.…”

Section: Resultsmentioning

confidence: 95%

“…The higher order dispersion coefficients have the substantial effect in this regime. A general phase-matching condition can be expressed as [31] (1) where are dispersion coefficients, 0 is the carrier frequency, ( ) is the phase delay per round-trip, is the dispersive wave frequency and where is the FWHM of the mode-locked pulse duration. Figure 2(b) (upper curve).…”

Section: Resultsmentioning

confidence: 99%

Diode-pumped ultrafast Yb:KGW laser with 56 fs pulses and multi-100 kW peak power based on SESAM and Kerr-lens mode locking

2017

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A high power sub-60 fs mode-locked diodepumped Yb:KGW laser based on hybrid action of an InGaAs quantum-dot saturable absorber mirror and Kerr-lens mode locking was demonstrated. The laser delivered a 56 fs pulse with 1.95 W of average power corresponding 450 kW of peak power. The width of the generated laser spectrum was 20.5 nm, which was near the gain bandwidth limit of the Yb:KGW crystal. To the best of our knowledge, these are the shortest pulses generated from the monoclinic double tungstate crystals (and Yb:KGW laser crystal in particular) and the most powerful in the sub-60 fs regime. At the same time, they are also the shortest pulses produced to date with the help of a quantum-dot-based saturable absorber. High power operation with a pulse duration of 90 fs and 2.85 W of average output power was also demonstrated.

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“…Moreover, if the considerable amount of a pulse energy is located in the Kelly sidebands, then the sideband itself can be considered as a sub-ns pulse with a very high soliton number [43,44]. If such a pulse is being amplified, it could lead to the modulational instability effect [16] contributing to the supercontinuum formation.…”

Section: Sc In Single-mode Step-index Chalcogenide Fibermentioning

confidence: 99%

Flat-Top Supercontinuum and Tunable Femtosecond Fiber Laser Sources at 1.9–2.5 μm

Klimentov

Tolstik

Dvoyrin

et al. 2016

J. Lightwave Technol.

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, Journal of Lightwave Technology Abstract -We report the high-energy flat-top supercontinuum covering the mid-infrared wavelength range of 1.9-2.5 μm as well as electronically tunable femtosecond pulses between 1.98-2.22 μm directly from the thulium-doped fiber laser amplifier. Comparison of experimental results with numerical simulations confirms that both sources employ the same nonlinear optical mechanism -Raman soliton frequency shift occurring inside the Tm-fiber amplifier.To illustrate that, we investigate two versions of the compact diode-pumped SESAM mode-locked femtosecond thulium-doped all-silica-fiber-based laser system providing either broadband supercontinuum or tunable Raman soliton output, depending on the parameters of the system. The first system operates in the Raman soliton regime providing femtosecond pulses tunable between 1.98-2.22 μm. Wide and continuous spectral tunability over 240 nm was realized by changing only the amplifier pump diode current. The second system generates high-energy supercontinuum with the superior spectral flatness of better than 1 dB covering the wavelength range of 1.9-2.5 μm, with the total output energy as high as 0.284 μJ, the average power of 2.1 W at 7.5 MHz repetition rate. We simulate the amplifier operation in the Raman soliton self-frequency shift regime and discuss the role of induced Raman scattering in supercontinuum formation inside the fiber amplifier. We compare this system with a more traditional 1.85-2.53 μm supercontinuum source in the external highly-nonlinear commercial chalcogenide fiber using the Raman soliton MOPA as an excitation source.The reported systems 1 can be readily applied to a number of industrial applications in the mid-IR, including sensing, stand-off detection, medical surgery and fine material processing.

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High-order dispersion effects in solitary mode-locked lasers: side-band generation

Cited by 22 publications

References 15 publications

Multipulse operation and limits of the Kerr-lens mode-locking stability

Multipulse operation and limits of the Kerr-lens mode-locking stability

Diode-pumped ultrafast Yb:KGW laser with 56 fs pulses and multi-100 kW peak power based on SESAM and Kerr-lens mode locking

Flat-Top Supercontinuum and Tunable Femtosecond Fiber Laser Sources at 1.9–2.5 μm

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