High-intensity ultrashort laser-induced ablation of stainless 
steel foil targets in the presence of ambient gas

Bernardo, Adrián; Courtois, Christian; Cros, B.; Batani, D.; Desai, T.; Strati, F.; Lucchini, G.

doi:10.1017/s0263034603211125

Cited by 21 publications

(8 citation statements)

References 2 publications

(6 reference statements)

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“…Ablation depth scales in vacuum as depth (µm) = 3.13 [E(mJ)] 0.41 . The effect of ambient pressure in reducing the ablation depth is discussed in our earlier work [5]. …”

Section: Resultsmentioning

confidence: 98%

Laser-induced ablation and crater formation at high laser flux

Desai

Batani

Rossetti

et al. 2005

Radiation Effects and Defects in Solids

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Laser ablation and crater formation have been studied on a copper target using a 10 Hz Nd:YAG laser system delivering pulses up to 100 mJ in 40 ps with a flux on target F ≤ 5000 J/cm 2 . Crater dimensions were measured using optical microscope or scanning electron microscope. In order to understand the process of crater formation, we considered various theoretical models present in the literature and revised them taking into account the occurrence of plasma phenomena, which are important at the intensities used in this experiment. We also compared our experimental results with other results obtained at the PALS laboratory, using a 0.44 µm wavelength laser and much higher laser intensities. Finally, we explore the possibility of extending the information derived from laser-produced craters to other types of craters.

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“…Ablation depth scales in vacuum as depth (µm) = 3.13 [E(mJ)] 0.41 . The effect of ambient pressure in reducing the ablation depth is discussed in our earlier work [5]. …”

Section: Resultsmentioning

confidence: 98%

Laser-induced ablation and crater formation at high laser flux

Desai

Batani

Rossetti

et al. 2005

Radiation Effects and Defects in Solids

Self Cite

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“…4,5) Depending on the laser energy and solid target material, the ion production can be tuned to achieve the desired requirements of the various fields for functional film formation, space propulsion and ion beam physics. [6][7][8][9][10][11][12][13] This straightforward concept displays the simplicity of the system configuration.…”

Section: Introductionmentioning

confidence: 99%

Ion propagation in an aluminum hollow cylinder target laser ion source

Saquilayan

Wada

2017

Jpn. J. Appl. Phys.

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Experimental results for the laser produced plasma in an aluminum hollow cylinder target are presented. Observing the plasma formation inside the cylinder, a high-speed camera captured the images of the plasma expanding towards the adjacent walls of target. The optical emission spectrum is obtained for the plasma inside the hollow cylinder and positive singly charged aluminum ions and neutrals are identified from emission spectral lines. Time dependent current signals of the Faraday cup displayed an enlarged signal intensity as the laser power density is increased up to 6.5 GW/cm 2 . Signal arrival times corresponding to fast ions appeared at the onset of the current waveforms when the laser power density exceeded 4.7 GW/cm 2 . For the mass analysis of plasma, an accelerating electric field was applied to separate the ions and the time-of-flight measurements showed positive ion signals with an identified peak to have an estimated mass of 350 amu.

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“…vacuum, shielding gas type, pressure and gas flow rate), and type of target material (e.g. dielectrics, semiconductors and metals) [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. Thermal ablation effects are observed for nanosecond and longer pulse width lasers, including wavelengths in the ultraviolet (UV), visible (VIS) and infrared (IR) regions [11,27].…”

Section: Introductionmentioning

confidence: 99%

Experimental study on 785 nm femtosecond laser ablation of sapphire in air

2015

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Changes in surface morphology and ablation rate induced on sapphire were investigated after interaction with femtosecond laser pulses in air at variable fluence (2 to 77 J cm −2 ) and repetition rate (10 to 1000 Hz). Multiple laser pulses at a wavelength of 785 nm and pulse width of 130 fs were fired at the surface of sapphire to produce craters whose depth, size and morphology were evaluated using optical and scanning electron microscopy. Ablation rate was found to depend on laser fluence, number of laser pulses and repetition rate. A rapid increase in ablation rate with fluence was observed for fluences lower than 5.9 J cm −2 , followed by a slow increase up to fluence of 40.7 J cm −2 . A drop in ablation rate occurred at fluence greater than 40.7 J cm −2 . Craters produced at high repetition rate (1000 Hz) at fluence of 11.8 J cm −2 were deeper than those produced at low repetition rate (10 Hz) during the first 40 to 50 pulses. The situation was reversed for craters produced by greater than 50 laser pulses. The drop in ablation rate observed at high fluence and repetition rate can be attributed to attenuation of the laser energy due to plasma and particle shielding that result from interactions with the lasergenerated particles that cannot be completely removed from the ablated crater. Defocusing effects associated with the non-equilibrium ionization of air which causes a divergence to the laser beam and consequently a reduction in the laser intensity at the sample surface can be another reason for the observed drop in the ablation rate at high fluence.

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High-intensity ultrashort laser-induced ablation of stainless steel foil targets in the presence of ambient gas

Cited by 21 publications

References 2 publications

Laser-induced ablation and crater formation at high laser flux

Laser-induced ablation and crater formation at high laser flux

Ion propagation in an aluminum hollow cylinder target laser ion source

Experimental study on 785 nm femtosecond laser ablation of sapphire in air

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