The interaction of focused femtosecond infrared laser pulses at 1 kHz repetition rate with bulk fused silica is thoroughly investigated. The interplay between self-focusing and filamentation of the laser pulses is analyzed for a broad range of focusing conditions. It is shown that even in the case o
Optical and ultrasonic monitoring of femtosecond laser filamentation in fused silica
✍ Scribed by Vygantas Mizeikis; Saulius Juodkazis; Tadas Balčiūnas; Sergey I. Kudryashov; Vladimir D. Zvorykin; Andrei A. Ionin; Hiroaki Misawa
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 187 KB
- Volume
- 255
- Category
- Article
- ISSN
- 0169-4332
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## Abstract The numerical solution of a wave equation describing the propagation of the laser pulse of a few optical cycles in fused silica is obtained. Our numerical simulations closely follow the published experimental data. A shifting of the spectrum peak of the broadened pulse, depending on the
1-to-8 and 1-to-4 optical waveguide power splitters were fabricated using the focused 800 nm-amplified femtosecond laser to directly write a series of 1-to-2 Y-junction splitters in a fused silica glass sample. A shifted multi-scan technique was developed to substantially reduce the excessive insert