Transmission electron microscopy studies of femtosecond laser induced modifications in quartz |
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Authors: | T Gorelik M Will S Nolte A Tuennermann U Glatzel |
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Institution: | (1) Technical Institute, University Jena, Loebdergraben 32, 07743 Jena, Germany, DE;(2) Institute for Applied Physics, University Jena, Max-Wien-Platz 1, 07743 Jena, Germany, DE |
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Abstract: | Cross-sectional transmission electron microscopy investigations of femtosecond laser induced sub-micrometer structural modifications
inside crystalline quartz were carried out. Modifications from single laser shots and from lines built of overlapping shots
were imaged. Both single laser shot modifications and line structures show an amorphous core surrounded by a disturbed crystalline
structure. A strong strain field surrounding the central, irradiated, core is responsible for an increase of the refractive
index. Finite element method calculations of the strain field show maxima on both sides of the irradiated core, which are
in good agreement with optical measurements of the refractive-index change.
Received: 29 September 2001 / Accepted: 9 July 2002 / Published online: 25 October 2002
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ID="*"Corresponding author. Fax: +49-3641/947792, E-mail: tatiana.gorelik@rz.uni-jena.de |
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Keywords: | PACS: 68 37 Lp 42 82 Et 61 80 Ba |
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