Pencil lead plasma for generating multimicrojoule high-order harmonics with a broad spectrum

Pertot, Yoann; Bom, L. B. Elouga; Bhardwaj, V. R.; Ozaki, T.

doi:10.1063/1.3558999

Cited by 73 publications

(42 citation statements)

References 24 publications

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“…Harmonics up to the 29th order were obtained from the fullerene plasma. Note that the harmonic efficiency in the case of the graphite plasma was about 5 times higher compared with the case of fullerene plasmas, most likely due to the higher concentration of emitters in the former case, as has also been reported in [13].…”

Section: Resultssupporting

confidence: 63%

High-order harmonic generation in fullerenes using few- and multi-cycle pulses of different wavelengths

et al. 2012

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We present the results of experimental and theoretical studies of high-order harmonic generation (HHG) in plasmas containing fullerenes using pulses of different duration and wavelength. We find that the harmonic cutoff is extended in the case of few-cycle pulses (3.5 fs, 29th harmonic) compared to longer laser pulses (40 fs, 25th harmonic) at the same intensity. Our studies also include HHG in fullerenes using 1300 and 780 nm multicycle (35 and 40 fs) pulses. For 1300 nm pulses, an extension of the harmonic cutoff to the 41st order was obtained, with a decrease in conversion efficiency that is consistent with theoretical predictions based on wave packet spreading for single atoms. Theoretical calculations of fullerene harmonic spectra using the single active electron approximation were carried out for both few-cycle and multicycle pulses.

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Section: Resultssupporting

confidence: 63%

High-order harmonic generation in fullerenes using few- and multi-cycle pulses of different wavelengths

et al. 2012

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“…Harmonics up to the 29 th order were obtained from the fullerene plasma. The harmonic efficiency in the case of the graphite plasma was about five times higher compared with the case of fullerene plasmas, most likely due to the higher concentration of emitters in the former case, as has also been reported in [37].…”

Section: Fullerenes Using Few-and Multi-cycl Pulses Of Different Wavesupporting

confidence: 63%

“…Conversio owed advantages of HHG in the case of graphite plasmas compared with fullerene plasmas [37]. This can be explained by the higher particle density in the graphite plasma.…”

Section: Fullerenes Using Few-and Multi-cycl Pulses Of Different Wavementioning

confidence: 72%

“…The graphite plasma, which was compared in these experiments with C 60 , can be easily aggregated during laser ablation, thus leading to nanoparticles formation in the laser plume, as it was shown in [36][37][38]. In that case the comparison of two clustered species (large 5 -20 nm carbon clusters and 0.7 nm C 60 ) can lead to their different nonlinear optical response once the interacting laser pulse becomes compressed from the multi-cycle to fewcycle duration.…”

Section: Fullerenes Using Few-and Multi-cycl Pulses Of Different Wavementioning

confidence: 99%

“…Surface heating and melting of a static target result in an unstable harmonic signal so that movement of the target surface is required to maintain a reasonable stability. The demand in finding the optimal way for improving the plasma harmonic stability at 1 kHz pulse repetition rate is high due to recent observations of the advanced properties of plasma harmonics over gas harmonics [36][37][38]. In particular, in [36], the plasma HHG conversion efficiency was measured one order of magnitude stronger compared with gas HHG efficiency.…”

Section: Stable Generation Of High-order Harmonics Of Femtosecond Lasmentioning

confidence: 99%

See 2 more Smart Citations

New Approaches in Frequency Conversion of Laser Radiation in Plasma Plumes

Ganeev¹

2013

OPJ

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Recent studies of plasma harmonic generation are reviewed. We show the advances of this technique for generation of coherent ultrashort pulses in the extreme ultraviolet range. Among the achievements highlighted in this review are the comparative experimental and theoretical studies of high-order harmonic generation in silver plasma, isolated subfemtosecond pulse generation in Mn plasma ablation, stable generation of high-order harmonics of femtosecond laser radiation from laser produced plasma plumes at 1 kHz pulse repetition rate, and high-order harmonic generation in fullerenes using few-and multi-cycle pulses of different wavelengths. We show that new developments of plasma harmonic studies can lead to the creation of an attractive field of laser ablation induced high-order harmonic generation spectroscopy.

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Resonance Processes at Different Conditions of Harmonic Generation in Laser‐Produced Plasmas

2018

Resonance Enhancement in Laser‐Produced Plasmas

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Pencil lead plasma for generating multimicrojoule high-order harmonics with a broad spectrum

Cited by 73 publications

References 24 publications

High-order harmonic generation in fullerenes using few- and multi-cycle pulses of different wavelengths

High-order harmonic generation in fullerenes using few- and multi-cycle pulses of different wavelengths

New Approaches in Frequency Conversion of Laser Radiation in Plasma Plumes

Resonance Processes at Different Conditions of Harmonic Generation in Laser‐Produced Plasmas

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