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Materials processing with tightly focused femtosecond vortex laser beams
- Publication Year :
- 2010
-
Abstract
- This letter is the first demonstration of material modification using tightly focused femtosecond laser vortex beams. Double-charge femtosecond vortices were synthesized with the polarization-singularity beam converter described in Ref [1] and then focused using moderate and high numerical aperture optics (viz., NA = 0.45 and 0.9) to ablate fused silica and soda-lime glasses. By controlling the pulse energy we consistently machine high-quality micron-size ring-shaped structures with less than 100 nm uniform groove thickness.<br />Comment: 8 pages, 3 figures, 10 references; submitted to Appl. Phys. Lett. on May 31, 2010
- Subjects :
- Physics - Optics
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.1006.0292
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1364/OL.35.003417