Ultra-CEP-stable single-cycle pulses at 2.2 µm

Optica, Journal Year: 2023, Volume and Issue: 10(6), P. 801 - 801

Published: May 12, 2023

Single-cycle optical pulses with controllable carrier-envelope phase (CEP) form the basis to manipulate nonlinear polarization of matter on a sub-femtosecond time scale. Moreover, light–matter energy exchange and frequency conversion processes benefit from longer, infrared wavelengths. We report highly stable source 6.9-fs, single-cycle at 2.2 µm, based directly diode-pumped Cr:ZnS oscillator 22.9-MHz repetition rate. Extreme spectral broadening output super-octave bandwidth (1.1–3.1 µm) is achieved in single rutile (TiO 2 ) plate. Excellent agreement simulations provides precise understanding underlying pulse propagation. A comprehensive investigation alternative materials additional out exceptional TiO due favorable interplay self-focusing, plasma formation accompanied by self-phase modulation self-compression. Unprecedented reproducibility waveforms ensured unique combination active CEP stabilization residual jitter only 5.9 mrad (0.1 Hz 11.45 MHz) relative intensity noise 0.036% 1 MHz). The new permits efficient downconversion mid-infrared cascaded intra-pulse difference generation, giving access manipulation electric currents low-bandgap an unprecedented degree control.

Language: Английский

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Dynamic optical response of solids following 1-fs-scale photoinjection

Nature, Journal Year: 2023, Volume and Issue: 618(7964), P. 276 - 280

Published: May 24, 2023

Photoinjection of charge carriers profoundly changes the properties a solid. This manipulation enables ultrafast measurements, such as electric-field sampling1,2, advanced recently to petahertz frequencies3-7, and real-time study many-body physics8-13. Nonlinear photoexcitation by few-cycle laser pulse can be confined its strongest half-cycle14-16. Describing associated subcycle optical response, vital for attosecond-scale optoelectronics, is elusive when studied with traditional pump-probe metrology dynamics distort any probing field on timescale carrier, rather than that envelope. Here we apply field-resolved these report direct observation evolving silicon silica during first few femtoseconds following near-1-fs carrier injection. We observe Drude-Lorentz response forms within several femtoseconds-a time interval much shorter inverse plasma frequency. in contrast previous measurements terahertz domain8,9 central quest speed up electron-based signal processing.

Language: Английский

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Carrier-envelope phase on-chip scanner and control of laser beams

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Aug. 21, 2023

The carrier-envelope phase (CEP) is an important property of few-cycle laser pulses, allowing for light field control electronic processes during laser-matter interactions. Thus, the measurement and CEP essential applications lasers. Currently, there no robust method measuring non-trivial spatial distribution pulses. Here, we demonstrate a compact on-chip, ambient-air, scanning probe with 0.1 µm3 resolution based on optical driving CEP-sensitive ultrafast currents in metal-dielectric heterostructure. We successfully apply to obtain 3D map changes vicinity oscillator beam focus pulses as weak 1 nJ. also focal volume modulator so that arbitrary sculpting could be realized.

Language: Английский

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On-chip petahertz electronics for single-shot phase detection

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Nov. 23, 2024

Attosecond science has demonstrated that electrons can be controlled on the sub-cycle time scale of an optical waveform, paving way towards frequency electronics. However, these experiments historically relied high-energy laser pulses and detection not suitable for microelectronic integration. For practical electronics, a system integration capable generating detectable signals with low pulse energies is needed. While current from plasmonic nanoantenna emitters driven at frequencies, charge yields have been significant limitation. In this work we demonstrate large-scale electrically connected networks, when in concert, enable sufficient single-shot carrier-envelope phase repetition rates exceeding tens kilohertz. We only show limitations CEP techniques overcome, but also flexible approach to electronics general, enabling future applications such as high sensitivity petahertz-bandwidth electric field sampling or logic-circuits.

Language: Английский

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Lightwave-electronic harmonic frequency mixing

Science Advances, Journal Year: 2024, Volume and Issue: 10(33)

Published: Aug. 14, 2024

Electronic frequency mixers are fundamental building blocks of electronic systems. Harmonic mixing in particular enables broadband electromagnetic signal analysis across octaves spectrum using a single local oscillator. However, conventional harmonic do not operate beyond hundreds gigahertz to few terahertz. If extended the petahertz scale compact and scalable form, would enable field-resolved optical spanning spectra monolithic device without need for conversion nonlinear crystals. Here, we demonstrate lightwave-electronic 0.350 PHz plasmonic nanoantennas. We that process complete, detection spectral content far outside oscillator, greatly extending range detectable frequencies compared heterodyning techniques. Our work has important implications applications where signals interest exhibit coherent femtosecond-scale dynamics multiple harmonics.

Language: Английский

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Petahertz electronics

Nature Reviews Physics, Journal Year: 2024, Volume and Issue: 6(11), P. 648 - 662

Published: Oct. 3, 2024

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Spatiotemporal sampling of near-petahertz vortex fields

Optica, Journal Year: 2022, Volume and Issue: 9(7), P. 755 - 755

Published: May 31, 2022

Measuring the field of visible light with high spatial resolution has been challenging, as many established methods only detect a focus-averaged signal. Here, we introduce near-field method for optical sampling that overcomes limitation by employing localization enhanced nanometric needle tip. A probe perturbs photoemission from tip, which is induced pump pulse, generating field-dependent current modulation can easily be captured our electronic detection scheme. The approach provides reliable characterization near-petahertz fields. We show not spiral wavefront femtosecond pulses carrying orbital angular momentum (OAM) resolved but also evolution time in focal plane. Additionally, polarization sensitive, makes it applicable to vectorial reconstruction.

Language: Английский

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Recent advances in petahertz electric field sampling

Journal of Physics B Atomic Molecular and Optical Physics, Journal Year: 2022, Volume and Issue: 55(17), P. 172001 - 172001

Published: July 11, 2022

Abstract The ability to resolve the complete electric field of laser pulses from terahertz mid-infrared spectral ranges has enriched time-domain spectroscopy for decades. Field-resolved measurements in this range have been performed routinely ambient air by various techniques like electro-optic sampling, photoconductive switching, field-induced second harmonic generation, and time stretch photonics. On contrary, resolving light at near-infrared limited attosecond streaking other that require operation vacuum. Recent advances are circumventing these shortcomings extending direct, detection petahertz frequencies. In first part letter, recent field-resolved reviewed. part, different approaches temporal scanning discussed, as resolution methods is prone jitter. review concludes discussing technological obstacles emerging applications such advancements.

Language: Английский

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Proceedings of the 8th International Conference on Attosecond Science and Technology

Springer proceedings in physics, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

This volume brings together selected papers from the 8th International Conference on Attosecond Science and Technology which took place in Orlando, ...

Language: Английский

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Far-Field Petahertz Sampling of Plasmonic Fields

Nano Letters, Journal Year: 2024, Volume and Issue: 24(18), P. 5506 - 5512

Published: March 26, 2024

The response of metal nanostructures to optical excitation leads localized surface plasmon (LSP) generation with nanoscale field confinement driving applications in, for example, quantum optics and nanophotonics. Field sampling in the terahertz domain has had a tremendous impact on ability trace such collective excitations. Here, we extend capabilities introduce direct LSPs more relevant petahertz domain. method allows measure LSP arbitrary subcycle precision. We demonstrate technique colloidal nanoparticles compare results finite-difference time-domain calculations, which show that build-up dephasing plasmonic can be resolved. Furthermore, observe reshaping spectral phase few-cycle pulse, ad-hoc pulse shaping by tailoring sample. methodology extended single nanosystems applied exploring subcycle, attosecond phenomena.

Language: Английский

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