Cascaded harmonic generation from a fiber laser: a milliwatt XUV source

Comby, Antoine; Descamps, D.; Beauvarlet, S.; Gonzalez, A. I.; Guichard, Florent; Petit, S.; Zaouter, Yoann; Mairesse, Y.

doi:10.1364/oe.27.020383

Cited by 40 publications

(38 citation statements)

References 47 publications

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“…This record XUV power together with the cutoff enhancement is enabled by a new-class of driving laser providing a unique combination of a short wavelength (515 nm) and a short pulse duration (18.6 fs) at a record high average power of 51 W. Compared to state-of-the art XUV sources, the provided average power is one order of magnitude higher and the pulse duration is significantly shorter, which represents a major milestone for upcoming applications of coherent XUV radiation in science and technology. Especially compared to Yb-fiber laser driven HHG sources the overall system efficiency from the Yb-fiber CPA into the XUV is 7 • 10 −5 , which is the highest efficiency ever shown for fiber laser driven HHG sources [10][11][12][13][14]. This will greatly advance and facilitate XUV application in various fields e.g.…”

Section: Discussionmentioning

confidence: 97%

“…In recent years, enhancement cavities [9,10] as well as Yb-based fibre lasers [11], which are capable of much higher average powers in the kilowatt regime (enabling megahertz repetition rates [28]), have shown a first increase in XUV average power demonstrating > 100 μW in a single harmonic line [10,11], with typical conversion efficiencies <10 −5 . Further increase of the HHG efficiency and, hence, XUV average powers in the milliwatt-regime can be achieved by using a combination of an optimized enhancement cavity together with a high average power driving laser [12], or by using short wavelength drivers [13,14]. The latter ones made use of the efficiency scaling of the single atom response with λ 6 , where λ represents the driving wavelength [29], increasing the HHG efficiency by more than one order of magnitude.…”

Section: Introductionmentioning

confidence: 99%

“…1 State of the art high harmonic sources. Assorted sources with, at the time, record high average powers above 10 μW in a single harmonic line for photon energies ranging from 12 eV to 30 eV over a time span from 1999 until to date [7][8][9][10][11][12][13][14][15]. The photon energy is indicated by the marker colour, while the driving wavelength is indicated by the marker shape.…”

Section: Introductionmentioning

confidence: 99%

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Ultra-short-pulse high-average-power megahertz-repetition-rate coherent extreme-ultraviolet light source

et al. 2021

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High harmonic generation (HHG) enables coherent extreme-ultraviolet (XUV) radiation with ultra-short pulse duration in a table-top setup. This has already enabled a plethora of applications. Nearly all of these applications would benefit from a high photon flux to increase the signal-to-noise ratio and decrease measurement times. In addition, shortest pulses are desired to investigate fastest dynamics in fields as diverse as physics, biology, chemistry and material sciences. In this work, the up-to-date most powerful table-top XUV source with 12.9 ± 3.9 mW in a single harmonic line at 26.5 eV is demonstrated via HHG of a frequency-doubled and post-compressed fibre laser. At the same time the spectrum supports a Fourier-limited pulse duration of sub-6 fs in the XUV, which allows accessing ultrafast dynamics with an order of magnitude higher photon flux than previously demonstrated. This concept will greatly advance and facilitate applications of XUV radiation in science and technology and enable photon-hungry ultrafast studies.

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Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ultra-short-pulse high-average-power megahertz-repetition-rate coherent extreme-ultraviolet light source

et al. 2021

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“…Current limitations due to contamination from slow but unavoidable micro-leaks and residual water that introduce oxygen into the chemical system will require improvements such as the use of a higher EUV flux to reduce the irradiation time. This new type of high repetition rate EUV sources (above 200 kHz) has recently been optimised 41 , paving the way for shorter irradiation time and therefore oxygen-free experiments. The cold trap could also be used before performing the experiment in order to minimize the water signal in the chamber.…”

Section: Discussionmentioning

confidence: 99%

On an EUV Atmospheric Simulation Chamber to Study the Photochemical Processes of Titan’s Atmosphere

Bourgalais

Carrasco

Vettier

et al. 2020

Sci Rep

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the in situ exploration of titan's atmosphere requires the development of laboratory experiments to understand the molecular growth pathways initiated by photochemistry in the upper layers of the atmosphere. Key species and dominant reaction pathways are used to feed chemical network models that reproduce the chemical and physical processes of this complex environment. energetic UV photons initiate highly efficient chemistry by forming reactive species in the ionospheres of the satellite. We present here a laboratory experiment based on a new closed and removable photoreactor coupled here to an extreme Ultraviolet (eUV) irradiation beam produced by the high-order harmonic generation of a femtosecond laser. this type of eUV stable source allow long-term irradiation experiments in which a plethora of individual reactions can take place. in order to demonstrate the validity of our approach, we irradiated for 7 hours at 89.2 nm, a gas mixture based on N 2 /cH 4 (5%). Using only one wavelength, products of the reaction reveal an efficient photochemistry with the formation of large hydrocarbons but especially organic compounds rich in nitrogen similar to titan. Among these nitrogen compounds, new species had never before been identified in the mass spectra obtained in situ in titan's atmosphere. their production in this experiment, on the opposite, corroborates previous experimental measurements in the literature on the chemical composition of aerosol analogues produced in the laboratory. Diazo-compounds such as dimethyldiazene (c 2 H 6 n 2), have been observed and are consistent with the large nitrogen incorporation observed by the aerosols collector pyrolysis instrument of the Huygens probe. this work represents an important step forward in the use of a closed cell chamber irradiated by the innovative eUV source for the generation of photochemical analogues of titan aerosols. this approach allows to better constrain and understand the growth pathways of nitrogen incorporation into organic aerosols in titan's atmosphere.

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“…Since its discovery in 1987 16,17 , HHG has been used in many experiments as a source of coherent femtosecond and attosecond light pulses in the extreme ultraviolet. Indeed, HHG sources possess a number of properties that make them ideal for many applications: excellent spatial coherence 18 , high brightness (above 10 10 photons per pulse using energetic Ti:Sapphire laser pulses 19,20 , above 10 13 photons per second using high-repetition rate Ytterbium fiber lasers 21,22 ), and ultrashort duration (femtosecond 23,24 and attosecond [25][26][27] pulses). These properties make HHG sources appealing for timeresolved measurements in atomic, molecular, and solidstate physics, but also as a simple alternative Vacuum UltraViolet source of irradiation to investigate laboratory astrochemistry, for instance 28 .…”

Section: A High-order Harmonic Generation In Gas Phasementioning

confidence: 99%

Aurore: A platform for ultrafast sciences

Fedorov

Beaulieu

Belsky

et al. 2020

Review of Scientific Instruments

Self Cite

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We present the Aurore platform for ultrafast sciences. This platform is based on a unique 20 W, 1 kHz, 26 fs Ti:Sapphire laser system designed for reliable operation and high intensity temporal contrast. The specific design ensures a high stability in terms of pulse duration, energy and beam pointing necessary for extended experimental campaigns. The laser supplies 5 different beamlines, all dedicated to a specific field: attosecond science (Aurore 1), ultrafast phase transitions in solids (Aurore 2 and 3), ultrafast luminescence in solids (Aurore 4), femtochemistry (Aurore 5). The technical specifications of these five beamlines are described in details and examples of recent results are given.

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Cascaded harmonic generation from a fiber laser: a milliwatt XUV source

Cited by 40 publications

References 47 publications

Ultra-short-pulse high-average-power megahertz-repetition-rate coherent extreme-ultraviolet light source

Ultra-short-pulse high-average-power megahertz-repetition-rate coherent extreme-ultraviolet light source

On an EUV Atmospheric Simulation Chamber to Study the Photochemical Processes of Titan’s Atmosphere

Aurore: A platform for ultrafast sciences

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