Noncollinear gating for high-flux isolated-attosecond-pulse generation

Zhong, Shiyang; He, Xinkui; Jiang, Yujiao; Teng, Hao; He, Peng; Liu, Yangyang; Zhao, Kun; Wei, Zhiyi

doi:10.1103/physreva.93.033854

Cited by 9 publications

(8 citation statements)

References 29 publications

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“…Taken together, these approaches can allow pushing the average power levels of intracavity based HHG sources further, promising new possibilities for ultrahigh precision spectroscopy in the VUV and XUV [171], possibly opening the door for the direct measurement and control of energetic atomic or even nuclear transitions [172]. Applications within attosecond science will also benefit from further power scaling advances for intracavity HHG, especially in combination with new attosecond pulse gating approaches [103,162] which might bring IAP sources into the multi-100 MHz regime.…”

Section: Discussionmentioning

confidence: 99%

“…During recent years, noncollinear generation geometries have attracted increasing attention for HHG [158][159][160] and attosecond pulse generation [103,161,162]. Most of them employ relatively small angles between the driving laser beams, thus, allowing a complete description of the underlying wave propagation phenomena using paraxial approximations as e.g.…”

Section: Noncollinear Geometriesmentioning

confidence: 99%

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Introduction to macroscopic power scaling principles for high-order harmonic generation

Heyl

Arnold

Couairon

et al. 2016

J. Phys. B: At. Mol. Opt. Phys.

146

107

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This tutorial presents an introduction to power scaling concepts for high-order harmonic generation (HHG) and attosecond pulse production. We present an overview of state-of-the-art HHG-based extreme ultraviolet (XUV) sources, followed by a brief introduction to basic principles underlying HHG and a detailed discussion of macroscopic effects and scaling principles. Particular emphasis is put on a general scaling model that allows the invariant scaling of the HHG process both, to μJ-level driving laser pulses and thus to multi-MHz repetition rates as well as to 100 mJ-or even Joule-level laser pulses, allowing new intensity regimes with attosecond XUV pulses.

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Section: Discussionmentioning

confidence: 99%

Section: Noncollinear Geometriesmentioning

confidence: 99%

Introduction to macroscopic power scaling principles for high-order harmonic generation

Heyl

Arnold

Couairon

et al. 2016

J. Phys. B: At. Mol. Opt. Phys.

146

107

View full text Add to dashboard Cite

show abstract

“…In the following, we refer to this scheme as transverse mode gating (TMG). Alternatively, as suggested in [63], one can cross the driving pulse with a weaker but shorter pulse, which introduces a slight wave front tilt for the duration of the short pulse, resulting in temporally confined emission of harmonics in off-axis direction. This is possible without adaptation of the EC geometry.…”

Section: Identification Of Promising Gating Methods For Cavity-enhancmentioning

confidence: 99%

Generation of isolated attosecond pulses with enhancement cavities—a theoretical study

2017

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The generation of extreme-ultraviolet (XUV) isolated attosecond pulses (IAPs) has enabled experimental access to the fastest phenomena in nature observed so far, namely the dynamics of electrons in atoms, molecules and solids. However, nowadays the highest repetition rates at which IAPs can be generated lies in the kHz range. This represents a rather severe restriction for numerous experiments involving the detection of charged particles, where the desired number of generated particles per shot is limited by space charge effects to ideally one. Here, we present a theoretical study on the possibility of efficiently producing IAPs at multi- MHz repetition rates via cavity-enhanced high-harmonic generation (HHG). To this end, we assume parameters of state-of-the-art Yb-based femtosecond laser technology to evaluate several time-gating methods which could generate IAPs in enhancement cavities. We identify polarization gating and a new method, employing non-collinear optical gating in a tailored transverse cavity mode, as suitable candidates and analyze these via extensive numerical modeling. The latter, which we dub transverse mode gating (TMG) promises the highest efficiency and robustness. Assuming 0.7 μ J , 5-cycle pulses from the seeding laser and a state-of-the-art enhancement cavity, we show that TMG bares the potential to generate IAPs with photon energies around 100 eV and a photon flux of at least 10 8 photons s − 1 at repetition rates of 10 MHz and higher. This result reveals a roadmap towards a dramatic decrease in measurement time (and, equivalently, an increase in the signal-to-noise ratio) in photoelectron spectroscopy and microscopy. In particular, it paves the way to combining attosecond streaking with photoelectron emission microscopy, affording, for the first time, the spatially and temporally resolved observation of plasmonic fields in nanostructures. Furthermore, it promises the generation of frequency combs with an unprecedented bandwidth for XUV precision spectroscopy.

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“…[1][2][3][4] Many schemes for generating IAP have been proposed and investigated. [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] However, most of them are sensitive to the carrier-envelope phase (CEP) of the driving laser pulses. [23,24] From the viewpoint of experiments, almost all laser systems cannot maintain the stability of CEP in the long term.…”

Section: Introductionmentioning

confidence: 99%

Isolated attosecond pulse generation with few-cycle two-color counter-rotating circularly polarized laser pulses

Wu¹,

Jia²,

Zhang

2017

Chinese Phys. B

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Most of the schemes for generating isolated attosecond pulses (IAP) are sensitive to the carrier-envelope phase (CEP) of the driving lasers. We propose a scheme for generating IAP using two-color counter-rotating circularly polarized (TC-CRCP) laser pulses. The results demonstrate that the dependence of the IAP generation on CEP stability is largely reduced in this scheme. IAP can be generated at most of CEPs. Therefore, the experiment requirements become lower.

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Noncollinear gating for high-flux isolated-attosecond-pulse generation

Cited by 9 publications

References 29 publications

Introduction to macroscopic power scaling principles for high-order harmonic generation

Introduction to macroscopic power scaling principles for high-order harmonic generation

Generation of isolated attosecond pulses with enhancement cavities—a theoretical study

Isolated attosecond pulse generation with few-cycle two-color counter-rotating circularly polarized laser pulses

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