Ultrafast Fiber Lasers: An Expanding Versatile Toolbox

Chang, Guoqing; Wei, Zhiyi

doi:10.1016/j.isci.2020.101101

Cited by 93 publications

(30 citation statements)

References 262 publications

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“…To make stable, practical, and maintenance-free lasers, new types of saturable absorbers with a nanocarbon material and ultra-short pulse compression techniques [19] and scaling the pulse energy and peak power [18] were developed. The performance of ultrafast fiber lasers is well defined by the laser parameters, including repetition rate, spectral bandwidth, pulse duration, pulse energy and average power [20].…”

Section: B Amplified Ultra-short-pulse Laser Systemsmentioning

confidence: 99%

Ultra-Short Pulse Lasers for Microfabrication: A Review

Račiukaitis

2021

IEEE J. Select. Topics Quantum Electron.

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Ultra-short pulse lasers, generating coherent light pulses with pulse durations in the picosecond and femtosecond range, are becoming popular in precision laser microfabrication. They are benefiting not only from well-predicted laser ablation with the suppressed heat-affected zone but also by opening new processing opportunities, especially in transparent materials, due to enhanced non-linear interaction with the material. In this review, the evolution of various kinds of mode-locked lasers from a scientific toy to a robust industrial tool is reviewed. The utilization benefits of high-average-power, high-pulse-repetition-rate ultra-short pulse laser are closely related to beam shaping and manipulation techniques. Fast beam scanning with galvanometric and polygon scanners as well as multi-beam parallel processing methods were developed. Some hot applications areas are briefly described. The efficient use of photons from ultra-short pulse lasers pushed the development of optimization methods in the ablation process. Efforts toward upscaling the process by increasing the average power of mode-locked lasers made feedback to laser developers, and burst regime became a necessity as well as high-speed beam scanning devices. Unique opportunities of ultra-short pulses are successfully exploited in machining transparent materials, with glass separation being the leading application.

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Section: B Amplified Ultra-short-pulse Laser Systemsmentioning

confidence: 99%

Ultra-Short Pulse Lasers for Microfabrication: A Review

Račiukaitis

2021

IEEE J. Select. Topics Quantum Electron.

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“…Fiber laser technology has been a topic of extensive research due to its outstanding properties, which are attractive for an enormous number of light-induced applications ranging from science to industry, and consequently has advanced rapidly in recent years [1][2][3][4][5][6][7][8]. Fiber laser systems are an appealing alternative to other existing laser sources, owing to their intrinsic merits, including power scaling, excellent beam quality and stability, high quantum efficiency, wide gain bandwidth, superior thermal management, and turn-key operation.…”

Section: Introductionmentioning

confidence: 99%

“…The development of LMA double-clad fibers rapidly boosts the output power/energy of fiber lasers in the last two decades, both in CW and pulsed modes [1,3,7]. It provides a higher pump injection to the fibers, which consequently has realized multi kW-level in average power and multi millijoules in energy within fiber laser and amplifiers.…”

mentioning

confidence: 99%

Towards Ultimate High-Power Scaling: Coherent Beam Combining of Fiber Lasers

2021

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Fiber laser technology has been demonstrated as a versatile and reliable approach to laser source manufacturing with a wide range of applicability in various fields ranging from science to industry. The power/energy scaling of single-fiber laser systems has faced several fundamental limitations. To overcome them and to boost the power/energy level even further, combining the output powers of multiple lasers has become the primary approach. Among various combining techniques, the coherent beam combining of fiber amplification channels is the most promising approach, instrumenting ultra-high-power/energy lasers with near-diffraction-limited beam quality. This paper provides a comprehensive review of the progress of coherent beam combining for both continuous-wave and ultrafast fiber lasers. The concept of coherent beam combining from basic notions to specific details of methods, requirements, and challenges is discussed, along with reporting some practical architectures for both continuous and ultrafast fiber lasers.

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“…Despite the breakthrough achievements of the recent decades (see e.g. 1 – 9 and references therein), design of mode-locked fiber lasers is still a challenging scientific and engineering problem. The main reason for this is the intrinsic nonlinearity of the elements forming fiber laser cavity and resulting non-trivial spatio-temporal field dynamics due to interplay between the key physical effects.…”

Section: Introductionmentioning

confidence: 99%

Inverse design of mode-locked fiber laser by particle swarm optimization algorithm

Kokhanovskiy

Kuprikov

Bednyakova

et al. 2021

Sci Rep

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A wide variety of laser applications, that often require radiation with specific characteristics, and relative flexibility of laser configurations offer a prospect of designing systems with the parameters on demand. The inverse laser design problem is to find the system architecture that provides for the generation of the desired laser output. However, typically, such inverse problems for nonlinear systems are sensitive to the computation of the gradients of a target (fitness) function making direct back propagation approach challenging. We apply here particle swarm optimization algorithm that does not rely on the gradients of the fitness function to the design of a fiber 8-figure laser cavity. This technique allows us to determine the laser cavity architectures tailored to generating on demand pulses with duration in the range of 1.5–105 ps and spectral width in the interval 0.1–20.5 nm. The proposed design optimisation algorithm can be applied to a variety of laser applications, and, more generally, in a range of engineering systems with flexible adjustable configurations and the outputs on demand.

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Ultrafast Fiber Lasers: An Expanding Versatile Toolbox

Cited by 93 publications

References 262 publications

Ultra-Short Pulse Lasers for Microfabrication: A Review

Ultra-Short Pulse Lasers for Microfabrication: A Review

Towards Ultimate High-Power Scaling: Coherent Beam Combining of Fiber Lasers

Inverse design of mode-locked fiber laser by particle swarm optimization algorithm

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