Competing Nonlinear Delocalization of Light for Laser Inscription Inside Silicon with a 2- μ m Picosecond Laser COMPETING NONLINEAR DELOCALIZATION... M. CHAMBONNEAU et al.

M. Chambonneau, L. Lavoute, D. Gaponov, V. Y. Fedorov, A. Hideur, S. Février, Stylianos Tzortzakis, O. Utéza, D. Grojo

Research output: Contribution to journalArticle

Abstract

The metrology of laser-induced damage usually finds a single transition from 0% to 100% damage probability when progressively increasing the laser energy in experiments. We observe that picosecond pulses at 2-μm wavelength focused inside silicon provide a response that strongly deviates from this. Supported by nonlinear propagation simulations and energy flow analyses, we reveal an increased light delocalization for near critical power conditions. This leads to a nonmonotonic evolution of the peak delivered fluence as a function of the incoming pulse of the energy, a situation more complex than the clamping of the intensity until now observed in ultrafast regimes. Compared to femtosecond lasers, our measurements show that picosecond sources lead to reduced thresholds for three-dimensional (3D) writing inside silicon that is highly desirable. However, strong interplays between nonlinear effects persist and should not be ignored for the performance of future technological developments. We illustrate this aspect by carefully retrieving from the study the conditions for a demonstration of 3D data inscription inside a silicon wafer.

Original languageEnglish
Article number024009
JournalPhysical Review Applied
Volume12
Issue number2
DOIs
Publication statusPublished - 5 Aug 2019

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silicon
damage
lasers
picosecond pulses
metrology
energy
fluence
wafers
thresholds
propagation
pulses
wavelengths
simulation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Competing Nonlinear Delocalization of Light for Laser Inscription Inside Silicon with a 2- μ m Picosecond Laser COMPETING NONLINEAR DELOCALIZATION... M. CHAMBONNEAU et al. / Chambonneau, M.; Lavoute, L.; Gaponov, D.; Fedorov, V. Y.; Hideur, A.; Février, S.; Tzortzakis, Stylianos; Utéza, O.; Grojo, D.

In: Physical Review Applied, Vol. 12, No. 2, 024009, 05.08.2019.

Research output: Contribution to journalArticle

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