NDLI: Time-resolved observation of energy deposition in fused silica by utrashort laser pulses in single and cumulative regime

Content Provider	IEEE Xplore Digital Library
Author	Mauclair, C. Mishchik, K. Mermillod-blondin, A. Bonse, J. Rosenfeld, A. Hertel, I.V. Audouard, E. Stoian, R.
Copyright Year	2010
Description	Author affiliation: Laboratoire Hubert Curien (UMR 5516 CNRS), Université de Lyon, 18 rue Pr. B. Lauras,42000 Saint-Etienne, France (Mauclair, C.; Mishchik, K.; Audouard, E.; Stoian, R.) \|\| Max-Born-Institut, Max-Born-Str. 2A, D-12489 Berlin, Germany Stahnsdorf (Mermillod-blondin, A.; Bonse, J.; Rosenfeld, A.; Hertel, I.V.)
Abstract	When femtosecond laser pulses are focused in the bulk of transparent materials (glasses), deposition of energy on a restricted volume can occur owing to the non linear character of the laser matter interaction. As a consequence, the possibility to generate micrometer-sized structural modifications arises. Those local changes are often associated with a minute variation in the refractive index which, when positive, enables the fabrication of light guiding components in three dimensions through simple laser translation. Although the first corresponding experimental demonstration approaches fifteen years of age, the complete picture of the dynamics and the processes leading to the local refractive index changes has still to be drawn to reach an optimal control of the laser-induced modification process. In this report, the laser-dielectric interaction is followed on an ultrashort time scale with the help of a unique time-resolved side-imaging technique allowing for absorption and phase contrast detection. Experimental observation of an absorptive electronic cloud in the first moments of the interaction along with the launch of a pressure wave after a few ns is reported. These physical objects are shown to be reliable indicators of the success of the energy transfer to the lattice which largely depends on the pulse temporal envelope.
Starting Page	1
Ending Page	2
File Size	1069583
Page Count	2
File Format	PDF
ISBN	9781557528902
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-05-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	OSA
Subject Keyword	Silicon compounds Optical device fabrication Refractive index Optimal control Glass Pulsed laser deposition Optical materials Ultrafast electronics Laser transitions Optical pulses
Content Type	Text
Resource Type	Article

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