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Title: Tracking of buried layers during plasma-assisted femtosecond laser drilling of compound targets

Abstract

It was shown that drilling of multi-layered target placed in the air by tightly focused femtosecond laser radiation with high fluence (up to 1000 J/cm{sup 2}) can be monitored online using plasma-induced X-ray emission and second harmonic of incident laser radiation. The technique based on X-rays registration is appeared to be more flexible than the method based on detection of second harmonic since its accuracy depends crucially on the target type. We demonstrated that the X-ray signal clearly indicates the transition from one layer to another during the microdrilling of targets consisting of 2–4 layers of titanium foil when a laser beam is focused beneath the target surface at a depth comparable to the layer thickness. The diagnostics of microchannel production in the chicken eggshell was performed for the first time. It was found that the presence of albumen beneath the shell accounts for longtime generation of X-ray pulses.

Authors:
; ; ;  [1]
  1. Faculty of Physics and International Laser Center, M.V. Lomonosov Moscow State University, 119991, GSP-1, 1-2 Leninskiye Gory, Moscow (Russian Federation)
Publication Date:
OSTI Identifier:
22597792
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 120; Journal Issue: 4; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AIR; ALBUMINS; BEAMS; COMPARATIVE EVALUATIONS; DEPTH; LASER DRILLING; LASER RADIATION; LASERS; LAYERS; PLASMA; SIGNALS; SURFACES; THICKNESS; TITANIUM; X RADIATION

Citation Formats

Zhvaniya, I. A., E-mail: irina.zhvaniya@physics.msu.ru, Garmatina, A. A., Makarov, I. A., and Gordienko, V. M. Tracking of buried layers during plasma-assisted femtosecond laser drilling of compound targets. United States: N. p., 2016. Web. doi:10.1063/1.4959203.
Zhvaniya, I. A., E-mail: irina.zhvaniya@physics.msu.ru, Garmatina, A. A., Makarov, I. A., & Gordienko, V. M. Tracking of buried layers during plasma-assisted femtosecond laser drilling of compound targets. United States. doi:10.1063/1.4959203.
Zhvaniya, I. A., E-mail: irina.zhvaniya@physics.msu.ru, Garmatina, A. A., Makarov, I. A., and Gordienko, V. M. Thu . "Tracking of buried layers during plasma-assisted femtosecond laser drilling of compound targets". United States. doi:10.1063/1.4959203.
@article{osti_22597792,
title = {Tracking of buried layers during plasma-assisted femtosecond laser drilling of compound targets},
author = {Zhvaniya, I. A., E-mail: irina.zhvaniya@physics.msu.ru and Garmatina, A. A. and Makarov, I. A. and Gordienko, V. M.},
abstractNote = {It was shown that drilling of multi-layered target placed in the air by tightly focused femtosecond laser radiation with high fluence (up to 1000 J/cm{sup 2}) can be monitored online using plasma-induced X-ray emission and second harmonic of incident laser radiation. The technique based on X-rays registration is appeared to be more flexible than the method based on detection of second harmonic since its accuracy depends crucially on the target type. We demonstrated that the X-ray signal clearly indicates the transition from one layer to another during the microdrilling of targets consisting of 2–4 layers of titanium foil when a laser beam is focused beneath the target surface at a depth comparable to the layer thickness. The diagnostics of microchannel production in the chicken eggshell was performed for the first time. It was found that the presence of albumen beneath the shell accounts for longtime generation of X-ray pulses.},
doi = {10.1063/1.4959203},
journal = {Journal of Applied Physics},
number = 4,
volume = 120,
place = {United States},
year = {Thu Jul 28 00:00:00 EDT 2016},
month = {Thu Jul 28 00:00:00 EDT 2016}
}