Ultra-low repetition rate mode-locked fiber laser with high-energy pulses

Kobtsev, Sergey; Kukarin, S. V.; Fedotov, Yuri

doi:10.1364/oe.16.021936

Cited by 208 publications

(133 citation statements)

References 13 publications

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“…However, the experiments show that the stability of ultra-long lasers with nonlinear polarisation evolution (NPE) mode locking is lower compared to the stability of short lasers on the time scale of the round trip of the cavity and on longer time scales (about one hour). As a matter of fact, we obtain bell-shaped laser spectra using long cavities (see, for example, (Kobtsev et al, 2008c)), which indicate the stochastic regime of wave packet generation. In contrast to the operation of short lasers, tuning polarisation elements does not allow the transition of ultra-long lasers into the regime of stable lasing, which is characterised by spectra with steep edges.…”

Section: Prospects and Limitationsmentioning

confidence: 89%

“…Schematic of extra-long mode-locked fibre laser: F2 -All-wave fibre, length of 2,6 km. New results obtained in the experiments (Kobtsev et al, 2008c) with relatively high energy of pulses directly in a passively mode-locked laser stimulated further investigations in this area Zhang et al, 2009;Lin et al, 2011;Song et al, 2011;Ai et al, 2011;Kobtsev et al, 2009;Senoo et al, 2010;Kelleher et al, 2009;L. Chen et al, 2009;Nyushkov et al, 2010;Kobtsev et al, 2010a;Ivanenko et al, 2010).…”

Section: Review Of Recent Progress In Mode-locked Fibre Lasers With Hmentioning

confidence: 99%

“…As a result, the pulse repetition frequency can be reduced by more than an order of magnitude (down to ~1.7 MHz) and the per-pulse energy can be raised by the same factor at the same average power of output radiation. Recently, a further increase of mode-locked laser cavity length by approximately an order of magnitude was demonstrated (Kobtsev et al, 2008c). As a result, a stable mode-lock regime was achieved in a fibre laser with optical length of the cavity 3.8 km.…”

Section: Review Of Recent Progress In Mode-locked Fibre Lasers With Hmentioning

confidence: 99%

See 2 more Smart Citations

Mode-Locked Fibre Lasers with High-Energy Pulses

Smirnov¹,

Kobtsev²,

Kukarin³

et al. 2011

Laser Systems for Applications

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Section: Prospects and Limitationsmentioning

confidence: 89%

Section: Review Of Recent Progress In Mode-locked Fibre Lasers With Hmentioning

confidence: 99%

Section: Review Of Recent Progress In Mode-locked Fibre Lasers With Hmentioning

confidence: 99%

See 1 more Smart Citation

Mode-Locked Fibre Lasers with High-Energy Pulses

Smirnov¹,

Kobtsev²,

Kukarin³

et al. 2011

Laser Systems for Applications

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Section: ¡äõñïñAeçîßðþç óçûçðëâ°ímentioning

confidence: 99%

Dissipative solitons in fiber lasers

Turitsyn¹,

Розанов²,

Yarutkina³

et al. 2016

Успехи физических наук

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“…The reduction of the pulse repetition rate by the order of magnitude down to a few MHz scale and the corresponding increase of per-pulse energy by the same factor (at the fixed average output power) have been demonstrated. The next level was achieved in the breakthrough works [5,6] in mode-lock fibre lasers with a several km cavities. Other examples of passive mode locking in fibre lasers with > 1 km resonators have been demonstrated in the subsequent works [7][8][9][10][11][12].…”

mentioning

confidence: 99%

Mode-locking in 25-km fibre laser

Ivanenko

Turitsyn

Kobsev

et al. 2010

36th European Conference and Exhibition on Optical Communication

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We demonstrate passive mode-locking and single pulse generation in a fibre laser with a record-setting cavity length of 25 km. Substantial increase in the pulse round trip duration leads to ultra-low repetition rate of 8.097 kHz and the pulse energy of 3.7 µJ.PACS numbers: 42.55. Wd, 42.60.Fc, 42.60.Da, 42.60.By Nowadays, lasers have become ubiquitous devices equally important in fundamental science, engineering technologies and in a range of practical applications. In the last decade there has been a revolutionary progress in laser science fuelled by advances in high-power systems, ultra-short pulse lasers and oscillators with high pulse energy. The progress was driven by a variety of new important applications that these advanced laser systems can open-up. This expansion has been facilitated by continuous advances in material science, achievements in technology and by the improvement in our understanding of the fundamental laser principles and physical effects underlying the operation and performance of new types of lasers. In particular, laser designs based on new physical concepts offer opportunities for creating systems with non-incremental changes of performance characteristics leading to disruptive progress. In this work we outline a new direction in development of pulsed lasers, by demonstrating a dramatic increase of the cavity length for modelocking fibre lasers to a record 25 km which corresponds to the cavity optical length of 37.05 km. Our result provides insight in design possibilities which may allow for non-incremental progress in laser technology by pulse energy up-scaling using very long cavities.The length of the resonator is, indeed, an important design parameter in mode-locked laser being responsible for repetition rate of generated pulses and their per-pulse energy. Higher per-pulse energy p E of the output in mode-locked lasers (at the same average power ave P of radiation) may be achieved by direct extension of the laser cavity, since(c is the speed of light, n-refractive index) -pulse energy is directly proportional to cavity length L and round trip time R T , while the repetition rate is inversely proportional to the resonator length. For a range of laser applications in material processing a high pulse energy or respectively high peak intensity is required. Different techniques such as Q-switching, cavity dumping and optical amplification are currently used to generate high energy pulses. One of the important physical and technical challenges in laser science is to achieve high pulse energy in mode-locked lasers to provide tools for a variety of applications ranging from material processing to advanced bio-medical imaging. Compared to Q-switching and cavity dumping techniques, mode-locked lasers allow a post-compression of output pulses, making possible generation of ultrashort optical pulses with high energy.Drastic increase of the laser cavity can be implemented using a fibre waveguide. In the case of CW fibre lasers, it has been recently demonstrated that resolvable reso...

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Ultra-low repetition rate mode-locked fiber laser with high-energy pulses

Cited by 208 publications

References 13 publications

Mode-Locked Fibre Lasers with High-Energy Pulses

Mode-Locked Fibre Lasers with High-Energy Pulses

Dissipative solitons in fiber lasers

Mode-locking in 25-km fibre laser

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