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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 24, Iss. 11 — Nov. 1, 2007
  • pp: 2814–2820

Optimization of the focal volume in programmable spatial beam shaping

Nicholas Huot, Nicholas Sanner, and Eric Audouard  »View Author Affiliations


JOSA B, Vol. 24, Issue 11, pp. 2814-2820 (2007)
http://dx.doi.org/10.1364/JOSAB.24.002814


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Abstract

Programmable spatial beam shaping using phase modulation has proven to be an efficient tool for direct and flexible femtosecond laser marking at a Fourier plane of an objective but not well adapted to deep machining or to photowriting in the bulk of a material. We propose an optimization of the focal volume by use of an additional wavefront correction located in the Fourier plane that compensates the focus component in particular. Theoretical predictions involving nonparaxial scalar diffraction are compared to experimental results obtained with a 100 kHz μ J -range femtosecond laser amplifier. Improvements in the beam characteristics, especially the Rayleigh range and the laser fluence, provided by such an additional wavefront control are underlined.

© 2007 Optical Society of America

OCIS Codes
(140.3300) Lasers and laser optics : Laser beam shaping
(140.7090) Lasers and laser optics : Ultrafast lasers

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: July 16, 2007
Revised Manuscript: August 29, 2007
Manuscript Accepted: September 10, 2007
Published: October 16, 2007

Citation
Nicholas Huot, Nicholas Sanner, and Eric Audouard, "Optimization of the focal volume in programmable spatial beam shaping," J. Opt. Soc. Am. B 24, 2814-2820 (2007)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-24-11-2814

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