2.3-cycle mid-infrared pulses from hybrid thin-plate post-compression at 7 W average power

Kurucz, Mâté; Flender, Roland; Haizer, Ľudovít; Nagymihály, Roland S.; Cho, Wosik; Kim, Kyung Taec; Tóth, Sz.; Cormier, Éric; Kiss, Bálint

doi:10.1016/j.optcom.2020.126035

Cited by 16 publications

(32 citation statements)

References 28 publications

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“…A few time-domain approaches that can be implemented in ambient air have recently been developed. A novel approach called tunneling ionization with a perturbation for the time-domain observation of an electric-field (TIPTOE) was demonstrated 15 – 19 in which sub-cycle ionization bursts play a role as a temporal gate. Also, there are streaking-like approaches in which electron bunches created by optical field ionization in air 20 or transition into the conduction band in solids 21 , 22 are temporal gates, and a current driven by an orthogonally polarized laser field is measured.…”

Section: Introductionmentioning

confidence: 99%

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Reconstruction algorithm for tunneling ionization with a perturbation for the time-domain observation of an electric-field

Cho

Shin

Kim

2021

Sci Rep

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We present a reconstruction algorithm developed for the temporal characterization method called tunneling ionization with a perturbation for the time-domain observation of an electric field (TIPTOE). The reconstruction algorithm considers the high-order contribution of an additional laser pulse to ionization, enabling the use of an intense additional laser pulse. Therefore, the signal-to-noise ratio of the TIPTOE measurement is improved by at least one order of magnitude compared to the first-order approximation. In addition, the high-order contribution provides additional information regarding the pulse envelope. The reconstruction algorithm was tested with ionization yields obtained by solving the time-dependent Schrödinger equation. The optimal conditions for accurate reconstruction were analyzed. The reconstruction algorithm was also tested using experimental data obtained using few-cycle laser pulses. The reconstructed pulses obtained under different dispersion conditions exhibited good consistency. These results confirm the validity and accuracy of the reconstruction process.

show abstract

Section: Introductionmentioning

confidence: 99%

“…The temporal profile of the laser pulse has been found by the first-order correction in the previous works 15 – 19 , which yields accurate results only for limited cases. In this work, we introduce a reconstruction algorithm in which a stochastic gradient-based optimization algorithm is used for an accurate reconstruction.…”

Section: Introductionmentioning

confidence: 99%

Reconstruction algorithm for tunneling ionization with a perturbation for the time-domain observation of an electric-field

Cho

Shin

Kim

2021

Sci Rep

Self Cite

View full text Add to dashboard Cite

show abstract

“…A novel approach called tunneling ionization with a perturbation for the time-domain observation of an electric-eld (TIPTOE) was recently demonstrated [9][10][11][12][13] . Unlike the conventional techniques, the TIPTOE method utilizes the extreme nonlinearity of ionization.…”

Section: Introductionmentioning

confidence: 99%

“…The temporal pro le of the laser pulse has been found by rst-order correction in previous works, which yields accurate results only for limited cases [9][10][11][12][13] . In this study, we demonstrate a reconstruction algorithm developed for the TIPTOE technique using a stochastic gradient-based optimization algorithm.…”

Section: Introductionmentioning

confidence: 99%

Reconstruction algorithm for tunneling ionization with a perturbation for the time-domain observation of an electric-field

Cho

Shin

Kim

2021

Preprint

Self Cite

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We present a reconstruction algorithm developed for the temporal characterization method called tunneling ionization with a perturbation for the time-domain observation of an electric field (TIPTOE). The reconstruction algorithm considers the high-order contribution of an additional laser pulse to ionization, enabling the use of an intense additional laser pulse. Therefore, the signal-to-noise ratio of the TIPTOE measurement is improved by at least one order of magnitude compared to the first-order approximation. In addition, the high-order contribution provides additional information regarding the pulse envelope. The reconstruction algorithm was tested with ionization yields obtained by solving the time-dependent Schrödinger equation. The optimal conditions for accurate reconstruction were analyzed. The reconstruction algorithm was also tested using experimental data obtained using few-cycle laser pulses. The reconstructed pulses obtained under different dispersion conditions exhibited good consistency. These results confirmed the validity and accuracy of the reconstruction process.

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“…Because of the continuous development of ultrafast laser technology, shorter and shorter pulses can be generated, and thereby a wider spectral bandwidth can be obtained [1][2][3][4][5][6][7]. In the past few decades, the high-harmonic generation (HHG) process has become a widely used method to achieve coherent radiation in the extreme ultraviolet (XUV) region with the potential to produce electromagnetic pulses with subfemtosecond duration.…”

mentioning

confidence: 99%

All-Optical Experimental Control of High-Harmonic Photon Energy

Oldal

Filus

et al. 2021

Phys. Rev. Applied

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We generate high-order harmonics in a gaseous medium with tunable photon energy using time-domain interferometry of double pulses in a noncollinear generation geometry. The method is based on the fact that the generated harmonics inherit certain spectral properties of the driving laser. The two temporally delayed laser pulses, identical in all parameters, are produced by a custom-made split-and-delay unit utilizing wave-front splitting without a significant energy loss. The arrangement is easy to implement in any attosecond pulse generation beamline, and is suitable for the production of an extreme ultraviolet source with simply and quickly variable central photon energy, useful for a broad range of applications.

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2.3-cycle mid-infrared pulses from hybrid thin-plate post-compression at 7 W average power

Cited by 16 publications

References 28 publications

Reconstruction algorithm for tunneling ionization with a perturbation for the time-domain observation of an electric-field

Reconstruction algorithm for tunneling ionization with a perturbation for the time-domain observation of an electric-field

Reconstruction algorithm for tunneling ionization with a perturbation for the time-domain observation of an electric-field

All-Optical Experimental Control of High-Harmonic Photon Energy

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