10 W CEP-stable few-cycle source at 2 µm with 100 kHz repetition rate

Neuhaus, Marcel; Fuest, Harald; Seeger, Maximilian; Schötz, Johannes; Trubetskov, Michael K.; Russbueldt, Peter; Hoffmann, Hans-Dieter; Riedle, Eberhard; Major, Zsuzsanna; Pervak, V.; Kling, Matthias F.; Wnuk, Paweł

doi:10.1364/oe.26.016074

Cited by 55 publications

(18 citation statements)

References 34 publications

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“…The standard deviation of the CEP as a function of accumulation time is then evaluated to be: 250 ± 60mrad, 310 ± 60mrad and 420 ± 50mrad for the 9sec, 90sec and 14min scans respectively. These values convey a reasonable CEP stability levels of the output, on par with the values commonly reported for OPA's and amplified lasers [14,[33][34][35][36][37]. Nevertheless, we believe that our hybrid amplifier has a capacity for a better CEP stability.…”

Section: Resultssupporting

confidence: 84%

Carrier-to-envelope phase-stable, mid-infrared, ultrashort pulses from a hybrid parametric generator: Cr:ZnSe laser amplifier system

et al. 2019

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Section: Resultssupporting

confidence: 84%

Carrier-to-envelope phase-stable, mid-infrared, ultrashort pulses from a hybrid parametric generator: Cr:ZnSe laser amplifier system

et al. 2019

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“…In this work, we report an OPA concept for producing an octave-spanning MIR spectrum and near-single-cycle pulses with high peak power and locked carrier-envelope phase while avoiding all of the above-mentioned problems. The work builds on our earlier reports about a related concept to generate CEP stable few cycle pulses in the 2 to 5 µm range [8,[26][27][28]. We combine a noncollinear OPA (NOPA) pumped by the second harmonic of a 1026 nm Yb:KGW-based pump laser with a collinear amplifier pumped by the residual fundamental pulses.…”

Section: Introductionmentioning

confidence: 99%

Octave-spanning single-cycle middle-infrared generation through optical parametric amplification in LiGaS₂

Chen¹,

Wittmann²,

Morimoto³

et al. 2019

Opt. Express

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We report the generation of extremely broadband and inherently phase-locked mid-infrared pulses covering the 5 to 11 µm region. The concept is based on two stages of optical parametric amplification starting from a 270-fs Yb:KGW laser source. A continuum seeded, second harmonic pumped pre-amplifier in β-BaB 2 O 4 (BBO) produces tailored broadband near-infrared pulses that are subsequently mixed with the fundamental pump pulses in LiGaS 2 (LGS) for mid-infrared generation and amplification. The pulse bandwidth and chirp is managed entirely by selected optical filters and bulk material. We find an overall quantum efficiency of 1% and a mid-infrared spectrum smoothly covering 5-11 µm with a pulse energy of 220 nJ at 50 kHz repetition rate. Electro-optic sampling with 12-fs long white-light pulses directly from self-compression in a YAG crystal reveals near-single-cycle mid-infrared pulses (32 fs) with passively stable carrier-envelope phase. Such pulses will be ideal for producing attosecond electron pulses or for advancing molecular fingerprint spectroscopy.

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“…So far, accessing the SW-MIR wavelength region with watt-level average power and above was mostly achieved with complex parametric amplifiers, pumped by better established high-power systems in the 1 µm wavelength region [3,7]. However, this results in complex and inefficient systems.…”

Section: Introduction and State-of-the-artmentioning

confidence: 99%

Moving towards high-power thin-disk lasers in the 2 µm wavelength range

et al. 2021

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Thin-disk lasers (TDLs) have made spectacular progress in the last decades both in continuous-wave and ultrafast operation. Nowadays, single thin-disk oscillators with > 16 kW of continuous-wave (CW)-power have been demonstrated and ultrafast amplifiers have largely surpassed the kilowatt milestone with pulse energies in the multi-100 mJ range. This amazing development has been demonstrated in the 1-µm wavelength range, using Yb-doped materials and supported by industrially available components. Motivated by both strong scientific and industrial applications, interest in expanding this performance to longer wavelength regions continues to increase. In particular, TDLs emitting directly in the short-wave mid-infrared (SW-MIR) region (2-3 µm) are especially sought after, and although many early studies have been reported, most remained in the proof-of-principle stage and the potential for multi-100-W operation remained undemonstrated. Here, we report on our recent results of a single fundamental-mode CW Ho:YAG thin-disk oscillator with >100 W of power, surpassing previous single-mode TDLs by a factor of >4, and marking a first milestone in the development of high-power SW-MIR TDLs. In optimized conditions, our laser system emitting at » 2.1 µm reaches an output power of 112 W with 54.6-% optical-to-optical efficiency and an M 2 = 1.1. This system is ideally suited for future direct modelocking at the 100 W level, as well as for ultrafast amplification. We start the discussion with a review of the state-of-the-art of TDLs emitting directly in the vicinity of 2 µm, and then discuss difficulties and possible routes both towards ultrafast operation and next possible steps for power scaling.

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10 W CEP-stable few-cycle source at 2 µm with 100 kHz repetition rate

Cited by 55 publications

References 34 publications

Carrier-to-envelope phase-stable, mid-infrared, ultrashort pulses from a hybrid parametric generator: Cr:ZnSe laser amplifier system

Carrier-to-envelope phase-stable, mid-infrared, ultrashort pulses from a hybrid parametric generator: Cr:ZnSe laser amplifier system

Octave-spanning single-cycle middle-infrared generation through optical parametric amplification in LiGaS₂

Moving towards high-power thin-disk lasers in the 2 µm wavelength range

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10 W CEP-stable few-cycle source at 2 µm with 100 kHz repetition rate

Cited by 55 publications

References 34 publications

Carrier-to-envelope phase-stable, mid-infrared, ultrashort pulses from a hybrid parametric generator: Cr:ZnSe laser amplifier system

Carrier-to-envelope phase-stable, mid-infrared, ultrashort pulses from a hybrid parametric generator: Cr:ZnSe laser amplifier system

Octave-spanning single-cycle middle-infrared generation through optical parametric amplification in LiGaS2

Moving towards high-power thin-disk lasers in the 2 µm wavelength range

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Product

Resources

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Octave-spanning single-cycle middle-infrared generation through optical parametric amplification in LiGaS₂