Materials processing with a tightly focused femtosecond laser vortex pulse. Academic Article

abstract

• In this Letter we present the first (to our knowledge) demonstration of material modification using tightly focused single femtosecond laser vortex pulses. Double-charge femtosecond vortices were synthesized with a polarization-singularity beam converter based on light propagation in a uniaxial anisotropic medium and then focused using moderate- and high-NA optics (viz., NA=0.45 and 0.9) to ablate fused silica and soda-lime glass. By controlling the pulse energy, we consistently machine micrometer-size ring-shaped structures with <100nm uniform groove thickness.

authors

• Krolikowski, Wieslaw

published proceedings

• Opt Lett

author list (cited authors)

• Hnatovsky, C., Shvedov, V. G., Krolikowski, W., & Rode, A. V.

citation count

• 159

complete list of authors

• Hnatovsky, Cyril||Shvedov, Vladlen G||Krolikowski, Wieslaw||Rode, Andrei V

publication date

• October 2010

publisher

• Optica Publishing Group  Publisher

published in

• Optics Letters  Journal

keywords

• Anisotropy
• Equipment Design
• Glass
• Lasers
• Light
• Nanotechnology
• Optics And Photonics
• Silicon Dioxide
• Surface Properties

PubMed Central ID

• 20967085

Digital Object Identifier (DOI)

• 10.1364/OL.35.003417

start page

• 3417

end page

• 3419

volume

• 35

issue

• 20