Angular emission of ions and mass deposition from femtosecond and nanosecond laser-produced plasmas

Verhoff, B.; Harilal, S. S.; Hassanein, A.

doi:10.1063/1.4730444

Cited by 64 publications

(56 citation statements)

References 32 publications

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“…At the high end of the fluence range, the larger low-energy peak attains such heights and widths that the high-energy shoulder becomes indistinguishable from it. This high-energy feature is also visible in other ablation experiments with pulse durations in the fs-ps range 15,17 and has been ascribed to the occurrence of an ambipolar field, resulting from a space-charge layer formed by electrons above the surface. This field accelerates some of the ions towards higher energies.…”

Section: B Peak Fluence Dependencementioning

confidence: 63%

“…13 Since the 1990s, many experiments have been performed and models developed 2,3 for laser-matter interaction at this particular time scale. Target materials used are metals such as gold, silver, copper, and aluminum, 5,12,[14][15][16][17][18][19][20][21] and non-metals such as silicon [22][23][24][25] and metal oxides, [26][27][28] among others. 29,30 Most of these studies are conducted in a femtosecond pulse length range from 50 fs up to approximately 1 ps and a pulse fluence up to 10 J/cm 2 .…”

Section: Introductionmentioning

confidence: 99%

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Ion distribution and ablation depth measurements of a fs-ps laser-irradiated solid tin target

Deuzeman

Stodolna

Leerssen

et al. 2017

Journal of Applied Physics

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Ion distribution and ablation depth measurements of a fs-ps laser-irradiated solid tin target Deuzeman, M. J.; Stodolna, A. S.; Leerssen, E. E. B.; Antoncecchi, A.; Spook, N.; Kleijntjens, T.; Versluis, J.; Witte, S.; Eikema, K. S. E.; Ubachs, W. Link to publication in University of Groningen/UMCG research database Citation for published version (APA): Deuzeman, M. J., Stodolna, A. S., Leerssen, E. E. B., Antoncecchi, A., Spook, N., Kleijntjens, T., ... Versolato, O. O. (2017). Ion distribution and ablation depth measurements of a fs-ps laser-irradiated solid tin target. Journal of Applied Physics, 121(10), [103301]. https://doi.org/10.1063/1.4977854 Copyright Other than for strictly personal use, it is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license (like Creative Commons).Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Ion distribution and ablation depth measurements of a fs-ps laser-irradiated solid tin target The ablation of solid tin surfaces by a 800-nanometer-wavelength laser is studied for a pulse length range from 500 fs to 4.5 ps and a fluence range spanning from 0.9 to 22 J/cm 2 . The ablation depth and volume are obtained employing a high-numerical-aperture optical microscope, while the ion yield and energy distributions are obtained from a set of Faraday cups set up under various angles. We found a slight increase of the ion yield for an increasing pulse length, while the ablation depth is slightly decreasing. The ablation volume remained constant as a function of pulse length. The ablation depth follows a two-region logarithmic dependence on the fluence, in agreement with the available literature and theory. In the examined fluence range, the ion yield angular distribution is sharply peaked along the target normal at low fluences but rapidly broadens with increasing fluence. The total ionization fraction increases monotonically with fluence to a 5%-6% maximum, which is substantially lower than the typical ionization fractions obtained with nanosecond-pulse ablation. The angular distribution of the ions does not depend on the laser pulse length within the measurement uncertainty. These results are of particular interest for the possible utilization of fs-ps laser systems in plasma sources of extreme ultraviolet light for nanolithography. Published by AIP Publishing. [http://dx

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Section: B Peak Fluence Dependencementioning

confidence: 63%

Section: Introductionmentioning

confidence: 99%

Ion distribution and ablation depth measurements of a fs-ps laser-irradiated solid tin target

Deuzeman

Stodolna

Leerssen

et al. 2017

Journal of Applied Physics

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“…Moreover, it is very interesting to note that scotch tests demonstrate that the films show an excellent adherence even at such large thickness and deposition rates. The production of films with such a large thickness can be attributed to the narrow angular distribution of the ablated material plume, which is well-known to be induced by two different laser parameters: short pulse duration [27] and large laser spot size [28]. All the depositions were carried out with an ultra-short pulse duration (5 ps) but also with a relatively large spot size, which resulted in a very directional plume towards the substrate surface.…”

Section: Resultsmentioning

confidence: 99%

Growth of poly-crystalline Cu films on Y substrates by picosecond pulsed laser deposition for photocathode applications

Gontad

Lorusso

Klini

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

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“…Unlike ns LPP, the larger N e values found at closer distances in fs LPP are due to efficient material ablation via improved energy coupling between laser and the target [10]. This allows more ablated particles to be confined along the axial direction [37,38]. Moreover, confinement along the expansion direction increases the number density at higher pressures.…”

Section: Effect Of Pulse Width On T E and N Ementioning

confidence: 99%

Influence of pulse width on the laser ablation of zinc in nitrogen ambient

2016

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Time-resolved spectroscopic measurements of expanding plasma plumes generated by irradiating a solid zinc target with laser pulses of 7 ns and 100 fs durations are carried out in the ambient pressure range of 0.05-200 Torr of nitrogen. At the relatively high input fluence of *16 J/cm 2 , fast and slow atomic species are found to appear at different times in the optical time-offlight (OTOF) spectra, the dynamics of which is primarily determined by the pulse duration of the excitation laser. In fs LPP, the average speed of fast species is unaffected by an increase in ambient pressure, while in ns LPP, the speed is found to reduce with pressure. The slow species shows a sharp peak in the OTOF spectra with a narrow velocity distribution for fs LPP, indicating a large number density and low electron temperature, which is consistent with optical emission spectroscopic (OES) studies. On the other hand, for ns LPP, the OTOF of slow species shows a more broadened profile which can be attributed to strong plume-laser interaction. The dynamics of slow species is heavily influenced by the presence of shock waves, which leads to the occurrence of much slower species at larger pressures.

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Angular emission of ions and mass deposition from femtosecond and nanosecond laser-produced plasmas

Cited by 64 publications

References 32 publications

Ion distribution and ablation depth measurements of a fs-ps laser-irradiated solid tin target

Ion distribution and ablation depth measurements of a fs-ps laser-irradiated solid tin target

Growth of poly-crystalline Cu films on Y substrates by picosecond pulsed laser deposition for photocathode applications

Influence of pulse width on the laser ablation of zinc in nitrogen ambient

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