Gating attosecond pulses in a noncollinear geometry

Louisy, Maite; Arnold, Cord L.; Miranda, Miguel; Larsen, Esben W.; Bengtsson, Samuel; Kroon, David; Kotur, Marija; Guénot, Diego; Rading, Linnea; Rudawski, Piotr; Brizuela, F.; Campi, Filippo; Kim, Byung–Hoon; Jarnac, Amélie; Houard, Aurélien; Mauritsson, Johan; Johnsson, Per; L’Huillier, Anne; Heyl, Christoph M.

doi:10.1364/optica.2.000563

Cited by 51 publications

(40 citation statements)

References 29 publications

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“…Another possibility to achieve WFR is non-collinear optical gating (NOG). Here, the idea is to cross two equally strong delayed pulses [61,62]. Then, the wave front orientation will change continuously from the direction of the first pulse to the one of the second pulse, leading to an attosecond lighthouse effect as in the case of the spatially chirped driving pulse.…”

Section: Identification Of Promising Gating Methods For Cavity-enhancmentioning

confidence: 99%

“…Production of IAPs by NOG was only experimentally demonstrated with sub-two-cycle pulses [62]. However, [61] predicts that separation of an IAP is still possible with 10 fs pulses at 800 nm, which corresponds to 3.75 cycles, assuming a harmonic beamlet divergence angle of Q 0.1 0 , with Q 0 denoting the divergence angle of the driving beam.…”

Section: Identification Of Promising Gating Methods For Cavity-enhancmentioning

confidence: 99%

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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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Section: Identification Of Promising Gating Methods For Cavity-enhancmentioning

confidence: 99%

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 ability to measure and quantify the achieved degree of compression is therefore paramount to identify the main characteristics of the output pulse and to further optimize its compression. Both spectral phase oscillations and the overall spectral phase of a pulse can be visualized in a very straightforward way using the dispersion-scan (d-scan) [41] technique, which has been extensively used in the last years to characterize many state-of-the-art few-cycle pulse sources around the world and is enabling new and very promising applications [6,[38][39][40]42]. D-scan is a recent approach for the simultaneous measurement and compression of femtosecond laser pulses.…”

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confidence: 99%

Universal route to optimal few- to single-cycle pulse generation in hollow-core fiber compressors

Jarque

Román

Silva

et al. 2018

Sci Rep

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Gas-filled hollow-core fiber (HCF) pulse post-compressors generating few- to single-cycle pulses are a key enabling tool for attosecond science and ultrafast spectroscopy. Achieving optimum performance in this regime can be extremely challenging due to the ultra-broad bandwidth of the pulses and the need of an adequate temporal diagnostic. These difficulties have hindered the full exploitation of HCF post-compressors, namely the generation of stable and high-quality near-Fourier-transform-limited pulses. Here we show that, independently of conditions such as the type of gas or the laser system used, there is a universal route to obtain the shortest stable output pulse down to the single-cycle regime. Numerical simulations and experimental measurements performed with the dispersion-scan technique reveal that, in quite general conditions, post-compressed pulses exhibit a residual third-order dispersion intrinsic to optimum nonlinear propagation within the fiber, in agreement with measurements independently performed in several laboratories around the world. The understanding of this effect and its adequate correction, e.g. using simple transparent optical media, enables achieving high-quality post-compressed pulses with only minor changes in existing setups. These optimized sources have impact in many fields of science and technology and should enable new and exciting applications in the few- to single-cycle pulse regime.

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“…But, the single attosecond pulses (SAPs) is much more favorable to the time-resolved dynamics measurement. Thus, several approaches have been proposed to obtain the SAPs, including the ionization and the polarization gating methods [12][13][14][15][16][17][18][19][20], the attosecond lighthouse [21][22][23] and the mix-color field method [24][25][26][27][28][29][30][31][32] etc. Recently, beyond the SAEA, Zhao's group [33,34], Feng et al [35] and Koval et al [36] investigated the HHG They found that due to the multi-electron effect, the harmonic cutoff can be further extended but with a very lower harmonic intensities in the extended region.…”

Section: Introductionmentioning

confidence: 99%

Carrier envelope phase measurement of multi-cycle mid-infrared field and its application on attosecond pulse generation

Feng

2018

Can. J. Phys.

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Abstract:A method for the carrier envelope phase (CEP) measurement of the multi-cycle mid-infrared field has been theoretically presented by using the CEP dependence of the harmonic cutoffs. It shows that by properly adding a CEP-known few-cycle near-infrared pulse to the multi-cycle mid-infrared field, the CEP dependence of the harmonic cutoffs from the combined field become much more distinct in comparison with those from the single mid-infrared field, which provides a route to a new CEP measurement technique. Further, by properly controlling the combined field, three supercontinua of 230 eV, 242 eV and 266 eV with the less modulation can be obtained. Finally, by selecting the generated harmonics, a series of sub-35 as pulses in the X-rays region can be produced.

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Gating attosecond pulses in a noncollinear geometry

Cited by 51 publications

References 29 publications

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

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

Universal route to optimal few- to single-cycle pulse generation in hollow-core fiber compressors

Carrier envelope phase measurement of multi-cycle mid-infrared field and its application on attosecond pulse generation

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