23  mJ high-power fiber CPA system using electro-optically controlled divided-pulse amplification

Stark, Henning; Buldt, Joachim; Müller, Michael; Klenke, Arno; Tünnermann, Andreas; Limpert, Jens

doi:10.1364/ol.44.005529

Cited by 49 publications

(36 citation statements)

References 16 publications

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“…A thorough review of this technique can be found in Hanna et al, 2016;Klenke et al, 2018. The red circles in Figure 4 present recent Yb-fiber CPA systems incorporating DPA and CBC (Kienel et al, 2016;Klenke et al, 2013Klenke et al, , 2014Mueller et al, 2020;Muller et al, 2016Muller et al, , 2018Stark et al, 2019); femtosecond pulses with >100 mJ energy and >10 kW average power are expected in the near future.…”

Section: Linear Amplificationmentioning

confidence: 99%

Ultrafast Fiber Lasers: An Expanding Versatile Toolbox

Chang

Wei

2020

iScience

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Ultrafast fiber lasers have gained rapid advances in last decades for their intrinsic merits such as potential of all-fiber format, excellent beam quality, superior power scalability, and high single-pass gain, which opened widespread applications in high-field science, laser machining, precision metrology, optical communication, microscopy and spectroscopy, and modern ophthalmology, to name a few. Performance of an ultrafast fiber laser is well defined by the laser parameters including repetition rate, spectral bandwidth, pulse duration, pulse energy, wavelength tuning range, and average power. During past years, these parameters have been pushed to an unprecedented level. In this paper, we review these enabling technologies and explicitly show that the nonlinear interaction between ultrafast pulses and optical fibers plays the essential role. As a result of rapid development in both active and passive fibers, the toolbox of ultrafast fiber lasers will continue to expand and provide solutions to scientific and industrial problems.

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Section: Linear Amplificationmentioning

confidence: 99%

Ultrafast Fiber Lasers: An Expanding Versatile Toolbox

Chang

Wei

2020

iScience

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“…In contrast, kilowatt average power levels are routinely achieved with Yb-based diode-pumped ultrafast laser systems. Their architecture can be based on slab [23,24], fiber [25,26] or thin-disk geometries [27]. Pulse energy scaling has been particularly successful in thin-disk based regenerative amplifiers.…”

Section: Introductionmentioning

confidence: 99%

Ultrafast thin-disk multipass amplifier with 720 mJ operating at kilohertz repetition rate for applications in atmospheric research

Herkommer¹,

Krötz²,

Jung³

et al. 2020

Opt. Express

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We present an ultrafast thin-disk based multipass amplifier operating at a wavelength of 1030 nm, designed for atmospheric research in the framework of the Laser Lightning Rod project. The CPA system delivers a pulse energy of 720 mJ and a pulse duration of 920 fs at a repetition rate of 1 kHz. The 240 mJ seed pulses generated by a regenerative amplifier are amplified to the final energy in a multipass amplifier via four industrial thin-disk laser heads. The beam quality factor remains ∼ 2.1 at the output. First results on horizontal long-range filament generation are presented.

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“…A combination of polarized beams can be done via polarization beam combiners or thin-film polarizers. Several representatives on power scaling of both CW and pulsed laser via polarization beam combiners have been led to the realization of tens of millijoules energy and kW level average powers [16,104,108,[170][171][172][173][174][175][176]. In 2010, Seise et al in a proof-of-principle experiment demonstrated the combination of two femtosecond fiber lasers with the combining efficiency of 97% [171].…”

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confidence: 99%

“…In an improvement in the PCFs technology, the large-pitch photonic-crystal fibers (LP-PCFs) concept was introduced for effective single-mode operation in PCF technology for power/energy scaling up [205]. Use of LP-PCFs have resulted in 22 GW peak power [16], 23 mJ single pulse [175], and kW level average power within CBC systems [174,176]. However, the major drawback of PCFs is high bending loss leading to the inconvenient large size of the system.…”

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confidence: 99%

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Towards Ultimate High-power Scaling: Coherent Beam Combing of Fiber Lasers

Fathi¹,

Närhi²,

Gumenyuk³

2021

Preprint

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Fiber laser technology has been demonstrated as a versatile and reliable approach for 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 are discussed, along with reporting some practical architectures for both continuous and ultrafast fiber lasers.

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23 mJ high-power fiber CPA system using electro-optically controlled divided-pulse amplification

Cited by 49 publications

References 16 publications

Ultrafast Fiber Lasers: An Expanding Versatile Toolbox

Ultrafast Fiber Lasers: An Expanding Versatile Toolbox

Ultrafast thin-disk multipass amplifier with 720 mJ operating at kilohertz repetition rate for applications in atmospheric research

Towards Ultimate High-power Scaling: Coherent Beam Combing of Fiber Lasers

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