Journal
APPLIED PHYSICS B-LASERS AND OPTICS
Volume 85, Issue 1, Pages 145-148Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00340-006-2308-9
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Writing conditions for the fabrication of optical waveguides in bulk fused silica glass by use of 1 kHz focused femtosecond laser pulses at 800 nm were systematically determined for different focusing geometries. The results demonstrate that waveguides can be formed based on optical breakdown, filamentation (single or multiple), or a combination of both processes, when using pulse energies lower than the threshold of structural damage. The mechanisms of laser-induced index change are also discussed.
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