Nonlinear multimode photonics: nonlinear optics with many degrees of freedom

Optica, Journal Year: 2022, Volume and Issue: 9(7), P. 824 - 824

Published: June 16, 2022

The overall goal of photonics research is to understand and control light in new richer ways facilitate applications. Many major developments this end have relied on nonlinear optical techniques, such as lasing, mode-locking, parametric downconversion, enable applications based the interactions coherent with matter. These processes often involve between photonic material degrees freedom spanning multiple spatiotemporal scales. While great progress has been made relatively simple optimizations, maximizing single-mode coherence or peak intensity alone, ultimate achievement engineering complete, multidimensional light–light light–matter through tailored construction complex fields systems that exploit all light’s freedom. This capability now within sight, due advances telecommunications, computing, algorithms, modeling. Control highly multimode also facilitates quantitative qualitative imaging, sensing, communication, information processing since these directly depend our ability detect, encode, manipulate many possible. Today, are increasingly being enhanced enabled by both nonlinearity. Here, we provide a brief overview photonics, focusing primarily wave propagation and, particular, promising future directions routes We conclude an emerging methodologies will complex, devices

Language: Английский

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Further Development of the Short‐Pulse Petawatt Laser: Trends, Technologies, and Bottlenecks

Laser & Photonics Review, Journal Year: 2022, Volume and Issue: 17(1)

Published: Oct. 26, 2022

Abstract The petawatt (PW) laser has experienced a rapid development in the past two decades, and tens of giant facilities have been constructed worldwide. After realizing 10–100 PW, it seems to be close some sort engineering limit but its focused peak intensity still is much lower than Schwinger limit, therefore technology improvements or innovations become indispensable for further increasing power as well intensity. By quick reviewing PW history, shown that reducing pulse duration near single optical cycle feasible (easy cheap) choice this purpose. Here, technologies optical‐cycle generation, ultrabroadband amplification, capability boosting aim provide possible approaches lasers are briefly reviewed discussed. Meanwhile, key bottlenecks challenge current future short‐pulse their solutions summarized This review aims roadmap next‐stage laser.

Language: Английский

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Nonlinear pulse compression of a 200 mJ and 1 kW ultrafast thin-disk amplifier

Optics Express, Journal Year: 2023, Volume and Issue: 31(14), P. 22740 - 22740

Published: June 7, 2023

We present a high-energy laser source consisting of an ultrafast thin-disk amplifier followed by nonlinear compression stage. At repetition rate 5 kHz, the drive provides pulse energy up to 200 mJ with duration below 500 fs. Nonlinear broadening is implemented inside Herriott-type multipass cell purged noble gas, allowing us operate under different seeding conditions. Firstly, 64 pulses demonstrated in argon-filled cell, showing compressibility down 32 Finally, we employ helium as medium increase while maintaining 50 Such sub-50 fs hold great promise drivers secondary sources.

Language: Английский

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Factor 30 Pulse Compression by Hybrid Multipass Multiplate Spectral Broadening

Ultrafast Science, Journal Year: 2022, Volume and Issue: 2022

Published: Jan. 1, 2022

As ultrafast laser technology advances towards ever higher peak and average powers, generating sub-50 fs pulses from architectures that exhibit best power-scaling capabilities remains a major challenge. Here, we present very compact highly robust method to compress 1.24 ps 39 by means of only single spectral broadening stage which neither requires vacuum parts nor custom-made optics. Our approach is based on the hybridization multiplate continuum multipass cell techniques. Their combination leads significantly factors in bulk material than what has been reported either alone. Moreover, our efficiently suppresses adverse features single-pass broadening. We use burst-mode Yb:YAG emitting with 80 MW power are enhanced more 1 GW after postcompression. With 0.19% rms pulse-to-pulse energy fluctuations, technique exhibits excellent stability. Furthermore, have measured state-of-the-art spectral-spatial homogeneity good beam quality M 2 = 1.2 up factor 30. Due method’s simplicity, compactness, scalability, it attractive for turning picosecond into an light source generates few tens femtoseconds duration.

Language: Английский

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Bright continuously tunable vacuum ultraviolet source for ultrafast spectroscopy

Communications Physics, Journal Year: 2024, Volume and Issue: 7(1)

Published: Jan. 11, 2024

Abstract Ultrafast electron dynamics drive phenomena such as photochemical reactions, catalysis, and light harvesting. To capture in real-time, femtosecond to attosecond sources are extensively used. However, an exact match between the excitation photon energy a characteristic resonance is crucial. High-harmonic generation advantageous terms of pulse duration but limited spectral tunability vacuum ultraviolet range. Here, we present monochromatic source continuously tunable around 21 eV utilizing second harmonic optical parametric chirped amplification laser system high-harmonic generation. The unique verified experiment probing interatomic Coulombic decay doped He nanodroplets across absorption bands. Moreover, achieved intensities sufficient for driving collective processes multiply excited helium nanodroplets, which have been previously observed only at free lasers.

Language: Английский

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A short guide to recent developments in laser-based gas phase spectroscopy, applications, and tools

APL Photonics, Journal Year: 2024, Volume and Issue: 9(1)

Published: Jan. 1, 2024

This article provides an overview of laser-based absorption spectroscopy applications and discusses the parameter space requirements laser systems for each these applications, with a special emphasis on frequency comb systems. We walk reader through basics spectroscopy, review common line-broadening mechanisms as fundamental challenges to precision look into established solutions, introduce frequency-comb-based suggest novel approach broadband in mid-infrared spectral region based combination high-power ultra-stable optical combs, crystalline supermirror technology, instrumental line-shape-free measurement technique. conclude after introduction noise sources their implications measurements in-depth discussion current state-of-the-art parametric conversion technologies.

Language: Английский

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Ultrafast 550-W average-power thin-disk laser oscillator

Optica, Journal Year: 2024, Volume and Issue: 11(10), P. 1368 - 1368

Published: Aug. 27, 2024

SESAM modelocked oscillators are interesting for applications in strong-field physics such as high-harmonic generation and attosecond science at high repetition rates or frequency combs the ultraviolet. Here we present a ultrafast thin-disk laser oscillator providing 550W of average output power with 852fs pulses 5.5MHz rate. To reach this significant scaling, replicating cavity design is utilized. The delivers 103 MW peak pulse energy 100 µJ beam quality M 2 <1.2, optical-to-optical efficiency 35%. advances manufacturing that enabled result discussed, well practical challenges when scaling to kW-class. When combined established compression technologies, can enable simpler systems by avoiding complexity chirped amplifier chains. Additionally, support much lower noise floor due reduced influence shot noise, which may provide route more sensitive pump-probe measurements.

Language: Английский

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Few-cycle pulse compression and white light generation in cascaded multipass cells

Optics Letters, Journal Year: 2022, Volume and Issue: 48(1), P. 147 - 147

Published: Nov. 29, 2022

We report supercontinuum generation and pulse compression in two stacked multipass cells based on dielectric mirrors. The 230 fs pulses at 1 MHz containing 12 µJ are compressed by a factor of 33 down to 7 fs, corresponding 1.0 GW peak power overall transmission 84%. source is particularly interesting for such applications as time-resolved angle-resolved photoemission spectroscopy (ARPES), electron microscopy, nonlinear spectroscopy.

Language: Английский

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Few-cycle pulse generation by double-stage hybrid multi-pass multi-plate nonlinear pulse compression

Optics Letters, Journal Year: 2022, Volume and Issue: 48(4), P. 984 - 984

Published: Dec. 19, 2022

Few-cycle pulses present an essential tool to track ultrafast dynamics in matter and drive strong field effects. To address photon-hungry applications, high average power lasers are used which, however, cannot directly provide sub-100-fs pulse durations. Post-compression of laser by spectral broadening dispersion compensation is the most efficient method overcome this limitation. We a notably compact setup which turns 0.1-GW peak power, picosecond burst-mode into 2.9-GW 8.2-fs source. The 120-fold duration shortening accomplished two-stage hybrid multi-pass, multi-plate compression setup. our knowledge, neither shorter nor higher powers have been reported to-date from bulk multi-pass cells alone, manifesting approach. It puts, for instance, compact, cost-efficient, repetition rate attosecond sources within reach.

Language: Английский

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Dispersion-engineered multi-pass cell for single-stage post-compression of an ytterbium laser

Optics Letters, Journal Year: 2023, Volume and Issue: 48(7), P. 1842 - 1842

Published: March 1, 2023

Post-compression methods for ultrafast laser pulses typically face challenging limitations, including saturation effects and temporal pulse breakup, when large compression factors broad bandwidths are targeted. To overcome these we exploit direct dispersion control in a gas-filled multi-pass cell, enabling, the first time to best of our knowledge, single-stage post-compression 150 fs up 250 µJ energy from an ytterbium (Yb) fiber down sub-20 fs. Dispersion-engineered dielectric cavity mirrors used achieve nonlinear spectral broadening dominated by self-phase modulation over at 98% throughput. Our method opens route toward Yb lasers into few-cycle regime.

Language: Английский

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