Transient laser-induced breakdown of dielectrics in ultra-relativistic laser-solid interactions (Conference Presentation)

Constantin Bernert; Stefan Assenbaum; Stefan Bock; Florian-Emanuel Brack; Thomas E. Cowan; Chandra B. Curry; Marco Garten; Lennart Gaus; Maxence Gauthier; René Gebhardt; Sebastian Göde; Siegfried H. Glenzer; Uwe Helbig; Thomas Kluge; Stephan Kraft; Florian Kroll; Lieselotte Obst-Huebl; Thomas Pueschel; Martin Rehwald; Hans-Peter Schlenvoigt; Christopher Schönwälder; Ulrich Schramm; Franziska Treffert; Milenko Vescovi; Tim Ziegler; Karl Zeil

doi:10.1117/12.2665586

8 June 2023 Transient laser-induced breakdown of dielectrics in ultra-relativistic laser-solid interactions (Conference Presentation)

Constantin Bernert, Stefan Assenbaum, Stefan Bock, Florian-Emanuel Brack, Thomas E. Cowan, Chandra B. Curry, Marco Garten, Lennart Gaus, Maxence Gauthier, René Gebhardt, Sebastian Göde, Siegfried H. Glenzer, Uwe Helbig, Thomas Kluge, Stephan Kraft, Florian Kroll, Lieselotte Obst-Huebl, Thomas Pueschel, Martin Rehwald, Hans-Peter Schlenvoigt, Christopher Schönwälder, Ulrich Schramm, Franziska Treffert, Milenko Vescovi, Tim Ziegler, Karl Zeil

Author Affiliations +

Proceedings Volume PC12579, Laser Acceleration of Electrons, Protons, and Ions VII; PC125790U (2023) https://doi.org/10.1117/12.2665586
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic

Abstract

We report on the time-resolved observation of transient laser-induced breakdown (LIB) during the leading edge of high-intensity petawatt-class laser pulses with peak intensities up to 6x10^21 W/cm^2 in interaction with dielectric cryogenic hydrogen jet targets. The results show that LIB occurs much earlier than what is typically expected following the concept of barrier suppression ionization and that the laser pulse duration dependence of LIB and laser-induced damage threshold (LIDT) is very relevant to high-intensity laser-solid interactions. We demonstrate an effective approach to determine the onset of LIB, i.e. the starting point of target pre-expansion, by comparing a laser contrast measurement with a characterization study of the target specific LIB thresholds.

Conference Presentation

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Constantin Bernert, Stefan Assenbaum, Stefan Bock, Florian-Emanuel Brack, Thomas E. Cowan, Chandra B. Curry, Marco Garten, Lennart Gaus, Maxence Gauthier, René Gebhardt, Sebastian Göde, Siegfried H. Glenzer, Uwe Helbig, Thomas Kluge, Stephan Kraft, Florian Kroll, Lieselotte Obst-Huebl, Thomas Pueschel, Martin Rehwald, Hans-Peter Schlenvoigt, Christopher Schönwälder, Ulrich Schramm, Franziska Treffert, Milenko Vescovi, Tim Ziegler, and Karl Zeil "Transient laser-induced breakdown of dielectrics in ultra-relativistic laser-solid interactions (Conference Presentation)", Proc. SPIE PC12579, Laser Acceleration of Electrons, Protons, and Ions VII, PC125790U (8 June 2023); https://doi.org/10.1117/12.2665586

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KEYWORDS

Laser induced damage

Dielectrics

Laser induced breakdown spectroscopy

Laser damage threshold

Pulsed laser operation

Solids

Hydrogen

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