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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 19 — Sep. 15, 2008
  • pp: 14922–14937

Generation of flat-top picosecond pulses by coherent pulse stacking in a multicrystal birefringent filter

Ingo Will and Guido Klemz  »View Author Affiliations

Optics Express, Vol. 16, Issue 19, pp. 14922-14937 (2008)

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This paper deals with the pulse-shaping properties of birefringent filters that feature an optical layout similar to a Solc fan filter. A simple computational model is given that explains the pulse-shaping process in the fan filter in two steps: First, the input pulse is split into several mutually delayed replicas due to the birefringence of the crystals. Second, these replicas interfere at the output polarizer of the filter and form the shaped output pulse. Fine-tuning of the phases of the replicas of the input pulse is permitted by tuning the temperature of the crystals. A birefringent pulse shaper containing ten birefringent crystals was investigated experimentally. The shape of the output pulses was measured by means of a special cross-correlation technique. Although a variety of pulse shapes can be generated with the described filter, it is particularly well suited for generation of flattop pulses featuring a 20-ps-long plateau and rising and falling edges shorter than 2 ps.

© 2008 Optical Society of America

OCIS Codes
(140.4050) Lasers and laser optics : Mode-locked lasers
(260.1440) Physical optics : Birefringence
(320.5540) Ultrafast optics : Pulse shaping
(140.3615) Lasers and laser optics : Lasers, ytterbium

ToC Category:
Ultrafast Optics

Original Manuscript: July 22, 2008
Revised Manuscript: August 29, 2008
Manuscript Accepted: September 2, 2008
Published: September 8, 2008

Ingo Will and Guido Klemz, "Generation of flat-top picosecond pulses by coherent pulse stacking in a multicrystal birefringent filter," Opt. Express 16, 14922-14937 (2008)

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