Instabilities in high power fiber lasers induced by stimulated Brillouin scattering

Mallek, Djouher; Kellou, A.; Leblond, Hervé; Sanchez, François

doi:10.1016/j.optcom.2013.06.062

Cited by 13 publications

(7 citation statements)

References 19 publications

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“…By increasing the pump level above the Brillouin threshold, which is estimated to be close to the laser threshold38, we observe the breaking of the microsecond pulses into regularly spaced short pulses with several nanoseconds duration and a period of 91.2 ns which is close to the inverse of the cavity FSR (see Fig. 5).…”

Section: Resultsmentioning

confidence: 60%

“…They also suggest that the appearance of such extreme events is directly associated with the emergence of SBS-based instabilities. However, the existing theoretical models only based on the interaction between the laser and Stokes waves did not evidence the dynamics observed here2938. The self-pulsing regime observed near threshold could then be attributed to the re-absorption of laser signal in the weakly-pumped section of the rare-earth-doped fiber42434445 or to ion-pairing acting as an effective saturable absorber464748.…”

Section: Discussionmentioning

confidence: 78%

“…The influence of stimulated Brillouin scattering in a high-loss linear laser cavity can be described with the coupled amplitudes model38. The latter is based on a rate-equation model including transitions such as stimulated and spontaneous emissions and as well as stimulated Brillouin scattering.…”

Section: Resultsmentioning

confidence: 99%

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Brillouin scattering-induced rogue waves in self-pulsing fiber lasers

Hanzard¹,

Talbi²,

Mallek³

et al. 2017

Sci Rep

Self Cite

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We report the experimental observation of extreme instabilities in a self-pulsing fiber laser under the influence of stimulated Brillouin scattering (SBS). Specifically, we observe temporally localized structures with high intensities that can be referred to as rogue events through their statistical behaviour with highly-skewed intensity distributions. The emergence of these SBS-induced rogue waves is attributed to the interplay between laser operation and resonant Stokes orders. As this behaviour is not accounted for by existing models, we also present numerical simulations showing that such instabilities can be observed in chaotic laser operation. This study opens up new possibilities towards harnessing extreme events in highly-dissipative systems through adapted laser cavity configurations.

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Section: Resultsmentioning

confidence: 60%

Section: Discussionmentioning

confidence: 78%

See 1 more Smart Citation

Brillouin scattering-induced rogue waves in self-pulsing fiber lasers

Hanzard¹,

Talbi²,

Mallek³

et al. 2017

Sci Rep

Self Cite

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show abstract

“…We suspect that SBS is the reason for the damage. SBS has been observed in linear oscillators and is responsible for self-Q-switching or random pulsing [17][18][19][20][21]. Because we employ overlapped filter passbands for self-starting, SBS can occur.…”

Section: Preliminary Approachmentioning

confidence: 99%

Starting Dynamics of a Fully Electronically Controlled Linear Mamyshev Oscillator

Chen,

Sidorenko,

Wise

2020

Preprint

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We start an environmentally-stable linear Mamyshev oscillator with electronically-controlled modulated pump and a moving filter. It delivers a 21-nJ pulse that becomes 65 fs in duration after a compressor. Reliable starting into stable mode-locking is found achievable with a modulated mode-locked state observed only when the modulation frequency is larger than 70 kHz. To avoid the damage of the gain fiber, two Faraday rotators are introduced. Besides, we have studied several aspects toward obtaining successful starting.

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“…Benefiting from the development of large-mode-area (LMA) fibers and high-brightness semiconductor-based pump sources, the range of the output power achieved by the fiber lasers has been obviously improved [2][3][4]. Unfortunately, as they are limited by stimulated Brillouin scattering and undesirable thermo-optics, it is difficult to scale up the output power of a single fiber laser to higher power levels, and this would hardly meet the increasing demands of modern and technologically advanced industries [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of the Influence of an Edge Filter on the Combining Efficiency and Beam Quality of a 10-kW-Class Spectral Beam-Combining System

Chen

Cong

et al. 2019

Applied Sciences

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Filter-based spectral beam combining (FSBC) is a promising power-scaling concept for high-power, broad-linewidth fiber lasers, as it relaxes the requirements for linewidth control and also the sizes of the individual beams. As the combining element in the FSBC system, the steep-edge filter plays a major role in achievement of the combining efficiency and the beam quality. In this case, we combine the uncorrelated surface roughness model and the combining efficiency model, and we conduct a comprehensive analysis of the effects of surface roughness, thickness error, and incident angle on the filter’s optical properties and the combining efficiency, in order to determine the optimal configuration for the laser beam-combining system. The simulation results show a good agreement with the measured ones. Meanwhile, through the adoption of the angular spectrum theory, this paper has also conducted a preliminary analysis of the influence of the combining elements on the quality of the combined beam, and some theoretical instructions on the future design of the spectral beam-combining system are provided.

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Instabilities in high power fiber lasers induced by stimulated Brillouin scattering

Abstract: We investigate numerically different types of instabilities in a high loss Fabry-Perot laser cavity in presence of the stimulated Brillouin scattering. Our results reveal many interesting dynamical behaviors such as periodic, quasi-periodic and chaotic.

Cited by 13 publications

References 19 publications

Brillouin scattering-induced rogue waves in self-pulsing fiber lasers

Brillouin scattering-induced rogue waves in self-pulsing fiber lasers

Starting Dynamics of a Fully Electronically Controlled Linear Mamyshev Oscillator

Modeling and Analysis of the Influence of an Edge Filter on the Combining Efficiency and Beam Quality of a 10-kW-Class Spectral Beam-Combining System

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