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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 12 — Jun. 17, 2013
  • pp: 14627–14635

Beam shaping and high-speed, cylinder-lens-free beam guiding using acousto-optical deflectors without additional compensation optics

Peter Bechtold, Ralph Hohenstein, and Michael Schmidt  »View Author Affiliations


Optics Express, Vol. 21, Issue 12, pp. 14627-14635 (2013)
http://dx.doi.org/10.1364/OE.21.014627


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Abstract

Using acousto-optical deflectors at high deflection speeds via acoustical frequency chirping induces astigmatism, deforming the laser beam in an unfavorable way. Within the paper, we present a method to prevent this effect for an ultrashort pulsed laser beam via acoustical frequency jumps synchronized to the pulse-to-pulse pause. We also demonstrate and give a method to calculate beam shaping capability of acousto-optical deflectors via arbitrary spatial frequency developments during ultrashort laser pulse transit through the deflector. Cylinder-lens-free deflection at >2000 rad/s and beam shaping capability is demonstrated experimentally. In our experiments the switching time between two beam shapes is 1 µs.

© 2013 OSA

OCIS Codes
(120.5800) Instrumentation, measurement, and metrology : Scanners
(140.3390) Lasers and laser optics : Laser materials processing
(220.1000) Optical design and fabrication : Aberration compensation
(230.1040) Optical devices : Acousto-optical devices
(320.0320) Ultrafast optics : Ultrafast optics
(320.7080) Ultrafast optics : Ultrafast devices

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: April 30, 2013
Revised Manuscript: June 5, 2013
Manuscript Accepted: June 7, 2013
Published: June 12, 2013

Citation
Peter Bechtold, Ralph Hohenstein, and Michael Schmidt, "Beam shaping and high-speed, cylinder-lens-free beam guiding using acousto-optical deflectors without additional compensation optics," Opt. Express 21, 14627-14635 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-12-14627


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