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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 20 — Oct. 15, 2010
  • pp: 3417–3419

Materials processing with a tightly focused femtosecond laser vortex pulse

Cyril Hnatovsky, Vladlen G. Shvedov, Wieslaw Krolikowski, and Andrei V. Rode  »View Author Affiliations


Optics Letters, Vol. 35, Issue 20, pp. 3417-3419 (2010)
http://dx.doi.org/10.1364/OL.35.003417


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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 < 100 nm uniform groove thickness.

© 2010 Optical Society of America

OCIS Codes
(140.3300) Lasers and laser optics : Laser beam shaping
(140.3390) Lasers and laser optics : Laser materials processing
(140.3440) Lasers and laser optics : Laser-induced breakdown
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.7160) Ultrafast optics : Ultrafast technology

ToC Category:
Ultrafast Optics

History
Original Manuscript: June 30, 2010
Revised Manuscript: September 2, 2010
Manuscript Accepted: September 5, 2010
Published: October 8, 2010

Citation
Cyril Hnatovsky, Vladlen G. Shvedov, Wieslaw Krolikowski, and Andrei V. Rode, "Materials processing with a tightly focused femtosecond laser vortex pulse," Opt. Lett. 35, 3417-3419 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-20-3417


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References

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