Selective rear side ablation of thin nickel–chromium-alloy films using ultrashort laser pulses

Pabst, Linda; Ullmann, Frank; Ebert, R.; Exner, Horst

doi:10.1007/s00339-018-1655-9

Cited by 5 publications

(5 citation statements)

References 16 publications

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“…As mentioned earlier the present study will be important from the view point its manifold applications, e.g. thin film deposition, cleaning of objects, etc [23][24][25][26].…”

Section: Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

“…Although there are several works on front ablation using pulse widths from femto second to nanosecond [17,20,21], in the case of rear ablation only limited studies are reported [22,23]. Recently it has been reported that rear ablation geometry is more favorable for cleaning of transparent objects as well as in thin film deposition [23][24][25][26]. Hence a comparative study of the same target using laser pulses with varying pulse widths exploiting rear/front ablation is essentially an important aspect for various applications.…”

Section: Introductionmentioning

confidence: 99%

“…Hence a comparative study of the same target using laser pulses with varying pulse widths exploiting rear/front ablation is essentially an important aspect for various applications. LPP studies on nickel has been done by some groups [6,24] however, ablation studies on nickel thin film are limited to a few [23,25,27]. The present work is an investigation of the expansion dynamics of LBO plasma plumes generated from a nickel thin film (50 nm) using laser pulses of comparable optical fluence but different excitation pulse widths (10 ns, 200 ps and 100 fs respectively).…”

Section: Introductionmentioning

confidence: 99%

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Pulse width dependent dynamics of laser-induced plasma from a Ni thin film

Thomas¹,

Joshi²,

Kumar³

et al. 2019

J. Phys. D: Appl. Phys.

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Plasma plume formation and its expansion in the background gas are investigated in a 50 nm thick Ni thin film under the rear ablation/laser blow-off (LBO) geometry, employing 10 ns, 200 ps and 100 fs laser pulses respectively. Plume directionality, splitting and expansion are found to depend on the laser pulse width, and the expansion behavior is explained by appropriate models. In the case of fs ablation, the plume shows a linear expansion at lower background pressures, while at higher pressures the expansion appears to show shock wave like nature. For ps ablation the expansion appears to follow a blast wave model at lower pressures, which, however, fits with drag model at higher pressures. In case of ns ablation, shock wave like nature is observed for all the pressures. Further, we believe the present study may have potential implications in pulsed laser deposition, ultra fast laser based nano particle generation and micro-machining.

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“…As mentioned earlier the present study will be important from the view point its manifold applications, e.g. thin film deposition, cleaning of objects, etc [23][24][25][26].…”

Section: Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Pulse width dependent dynamics of laser-induced plasma from a Ni thin film

Thomas¹,

Joshi²,

Kumar³

et al. 2019

J. Phys. D: Appl. Phys.

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“…Recently it has been reported that back ablation is favourable for better film deposition and cleaning of glassware. [9,10] Some works were reported regarding the study of front and rear ablation in laser plasmas. [11] However, a proper compositional analysis was not attempted in the past.…”

Section: Introductionmentioning

confidence: 99%

Neutral and ion composition of laser produced lithium plasma plume in front and back ablation of thin film

Mondal

Singh

Joshi

2019

J. Anal. At. Spectrom.

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Composition analysis of LiF-C thin film for neutral and ionic contributions in Front Ablation (FA) and Back Ablation (BA) geometries in vacuum and 2 × 10 −1 mbar argon has been done. Temporal evolution of ionic to neutral ratio and neutral abundance for both the geometries has been estimated. For neutral abundance, two approaches viz Atomic Data and Analysis Structure (ADAS) analysis as well as integrated intensity ratio of Li I 670.1 nm and Li I 610.3 nm lines assuming LTE conditions are explored. The present attempt will be interesting from the view point of understanding the evolution of plasma composition in various geometries/configurations of laser ablation which has important implications in various applications e.g. pulsed laser deposition and laser cleaning.

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