Influence of microscopic and macroscopic effects on attosecond pulse generation using two-color laser fields

Chen, Cong; Hernández-García, Carlos; Tao, Zhensheng; Zhang, Yanhang; Zusin, Dmitriy; Gentry, Christian; Tengdin, Phoebe; Becker, Andreas; Kapteyn, Henry C.; Murnane, Margaret M.

doi:10.1364/oe.25.028684

Cited by 6 publications

(4 citation statements)

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“…On the experimental side, many studies have investigated HHG driven by two‐ and multi‐color fields with parallel [ 6,20,23,77,160,162,168–180 ] or perpendicular [ 181–186 ] polarizations. In particular, experiments with parallel‐polarized fields revealed HHG yield enhancement, energy cutoff extension, attosecond coherent control, and direct IAP generation.…”

Section: Applications Of Waveform Synthesismentioning

confidence: 99%

“…In the opposite scenario, where the strong, fundamental field was fixed at 0.8 µm and a longer-wavelength, weaker field served as the assisting field; HHG enhancements were found only a few times lower than the original 𝜔-3𝜔 optimization. [167] Experimental Works: On the experimental side, many studies have investigated HHG driven by two-and multi-color fields with parallel [6,20,23,77,160,162,[168][169][170][171][172][173][174][175][176][177][178][179][180] or perpendicular [181][182][183][184][185][186] polarizations. In particular, experiments with parallel-polarized fields revealed HHG yield enhancement, energy cutoff extension, attosecond coherent control, and direct IAP generation.…”

Section: Attosecond Pulse Generation Driven By Multi-color and Synthe...mentioning

confidence: 99%

“…Earlier investigations, listed in Table 2, on IAP gating via multi‐color fields based the IAP characterization mainly on the observation of continuous spectra. [ 171,172,179 ] In these studies, the single attosecond pulse emission was attributed to multi‐color gating. [ 187,195,196,198 ] Additional indirect signatures of IAP generation, for example, CEP‐dependent periodic modulations of the IAP spectra [ 115,117,188,202 ] or characterization of their temporal profile, was not present in the aforementioned studies.…”

Section: Applications Of Waveform Synthesismentioning

confidence: 99%

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Optical Waveform Synthesis and Its Applications

Cirmi

Mainz

Silva‐Toledo

et al. 2023

Laser & Photonics Reviews

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The quest for ever‐shorter optical pulses has been ongoing for over half a century. Although few‐cycle pulses have been generated for nearly 40 years, pulse lengths below the single‐cycle limit have remained an elusive goal for a long time. For this purpose, optical waveform synthesizers, generating high‐energy, high‐average‐power pulses via coherent combination of multiple pulses covering different spectral regions, have been recently developed. They allow unprecedented control over the generated optical waveforms, spanning an extremely broad spectral range from ultraviolet to infrared. Such control allows for steering strong‐field interactions with increased degrees of freedom. When driving high‐harmonic generation, tailored waveforms can produce bright attosecond pulse trains and even isolated attosecond pulses with tunable spectra up to the soft X‐ray range. In this paper recent progress on parametric and hollow‐core fiber waveform synthesizers is discussed. Newly developed seeding schemes; absolute, relative, and spectral phase measurement; and control techniques suitable for synthesizers are described. The progress on serial and parallel waveform synthesis based on Ti:sapphire and Ytterbium laser systems and their latest applications in high‐harmonic generation in gaseous and solid media, attosecond science, and laser wakefield acceleration is discussed.

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Section: Applications Of Waveform Synthesismentioning

confidence: 99%

Section: Attosecond Pulse Generation Driven By Multi-color and Synthe...mentioning

confidence: 99%

Section: Applications Of Waveform Synthesismentioning

confidence: 99%

See 1 more Smart Citation

Optical Waveform Synthesis and Its Applications

Cirmi

Mainz

Silva‐Toledo

et al. 2023

Laser & Photonics Reviews

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“…While multicolor schemes of controlling harmonic generation have been well known for a long time [18,[34][35][36][37][38][39], studies on HHG in bichromatic driving field near a plasmonic nanostructure have started only recently. Using ultravioletassisted low-intensity infrared (IR) 1600-100 nm pulses, highly efficient supercontinuum generation near plasmonic nanostructure is shown [40].…”

Section: Introductionmentioning

confidence: 99%

Controlling high harmonic generation using inhomogeneous two-color driving laser pulse

2021

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High harmonic generation (HHG) is strongly modified near plasmonic nanostructures due to confinement and inhomogeneity of the electromagnetic field. Previous studies have revealed low-intensity generation of HHG and extension of the plateau; however, the roles of potential shape and a combination of inhomogeneous infrared (IR) and blue fields on HHG have not been studied. In this work, we study HHG driven by inhomogeneous two-color (800–400 nm) IR and blue femtosecond pulses by numerically solving the time-dependent Schrödinger equation. HHG spectra are computed for two different models: for a short-range potential, which supports a single-bound state, and for a long-range potential, which supports a Rydberg series, to show potential dependence on inhomogeneous two-color HHG. A substantial enhancement in the value of the cut-off resulting from inhomogeneity up to the ∼600th order, extending beyond the water window, is found for both the models. The HHG spectra are highly sensitive to the relative phase of the two-color fields and this sensitivity increases with increasing inhomogeneity. Possibilities of efficiently generating and controlling attosecond pulse train and isolated attosecond pulse are discussed.

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