All-solid-state multipass spectral broadening to sub-20  fs

Fritsch, Kilian; Poetzlberger, Markus; Pervak, Vladimir; Brons, Jonathan; Pronin, Oleg

doi:10.1364/ol.43.004643

Cited by 113 publications

(63 citation statements)

References 31 publications

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“…3(a)] with an average power of 70 W at a repetition rate of 28 MHz. The configuration of this system is very similar to the one published by Fritsch et al [28], but with only two Herriott cells for the spectral broadening instead of three. Both ZnSe and ZnS crystals were tested under an average input power of 4 and 6.5 W, respectively.…”

Section: Lettermentioning

confidence: 75%

Intra-pulse difference-frequency generation of mid-infrared (27–20 μm) by random quasi-phase-matching

et al. 2019

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We present a mid-infrared (MIR) source based on intrapulse difference-frequency generation under the random quasi-phase-matching condition. The scheme enables the use of non-birefringent materials whose crystal orientations are not perfectly and periodically poled, widening the choice of media for nonlinear frequency conversion. With a 2 μm driving source based on a Ho:YAG thin-disk laser, together with a polycrystalline ZnSe element, an octavespanning MIR continuum (2.7-20 μm) was generated. At over 20 mW, the average power is comparable to regular phase-matching in birefringent crystals. A 1 μm laser system based on a Yb:YAG thin-disk laser was also tested as a driving source in this scheme. The new approach provides a simplified way for generating coherent MIR radiation with an ultrabroad bandwidth at reasonable efficiency.

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Section: Lettermentioning

confidence: 75%

Intra-pulse difference-frequency generation of mid-infrared (27–20 μm) by random quasi-phase-matching

et al. 2019

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“…Ongoing efforts to improve the quality of this and other Yb-doped broadband gain materials are expected to bring further improvements to the achievable levels. In parallel to these efforts, large progress has been made in finding paths for efficient external pulse compression of these high-average power laser systems using hollow-core fibers [48], multi-pass cells [49][50][51][52], hybrid setups including multi-plate compressors [53], and even spectral broadening in the amplifier itself [54] bringing these applications one step closer. Additionally, as the pulse durations from these systems keeps getting shorter and approach the few-cycle regime, carrier-envelope phase control becomes increasingly relevant, in particular for high-power oscillators which can be used as powerful seeds for booster amplifiers [55,56].…”

Section: Resultsmentioning

confidence: 99%

The amazing progress of high-power ultrafast thin-disk lasers

Saraceno¹,

Sutter²,

Metzger³

et al. 2019

J. Eur. Opt. Soc.-Rapid Publ.

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Ultrafast lasers continue to be at the forefront of many scientific breakthroughs and technological achievements and progress in the performance of these systems continue to open doors in many new and exciting interdisciplinary fields. In particular, in the last decade, the average power of ultrafast lasers has seen a significant increase, opening up exciting new perspectives. Among the different technologies that have shaped these advances, thin-disk lasers have generated particularly spectacular breakthroughs. We review here the latest state-of-the-art of the technology and highlight new application fields of these cutting-edge laser systems.

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“…Additionally, the high intracavity power in TDL oscillators can be leveraged to drive intracavity nonlinear-optics experiments [13]. Finally, the recent demonstrations of multi-pass cell compression at 375-W average output power to 170 fs [14] and at 60 W to 16 fs pulses [15], show the possibility to compress the high-power output of these oscillators in order to get the optimal peak power for many nonlinear optics applications.…”

Section: Introductionmentioning

confidence: 99%

Power scaling of ultrafast oscillators: 350-W average-power sub-picosecond thin-disk laser

et al. 2019

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We report a semiconductor saturable absorber mirror (SESAM)-modelocked thin-disk laser oscillator delivering a record 350-W average output power with 940-fs, 39-µJ pulses at 8.88-MHz repetition rate and 37-MW peak power. This oscillator is based on the Yb:YAG gain material and has a large pump spot on the disk. The cavity design includes an imaging scheme, which results in multiple reflections on the disk gain medium to enable a larger output coupling rate compared to those used in thin-disk oscillators with a single reflection on the disk. This reduces the intracavity power for a given output power, thus decreasing the stress on the intracavity components. We operate the laser in a low-pressure environment in order to limit the disk's thermal lensing and drastically reduce the nonlinearity picked up in the intracavity air medium. The combination of the imaging scheme and low-pressure operation paves the way to further power scaling of ultrafast thin-disk oscillators toward the kW milestone.

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All-solid-state multipass spectral broadening to sub-20 fs

Cited by 113 publications

References 31 publications

Intra-pulse difference-frequency generation of mid-infrared (27–20 μm) by random quasi-phase-matching

Intra-pulse difference-frequency generation of mid-infrared (27–20 μm) by random quasi-phase-matching

The amazing progress of high-power ultrafast thin-disk lasers

Power scaling of ultrafast oscillators: 350-W average-power sub-picosecond thin-disk laser

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