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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: G. I. Stegeman
  • Vol. 23, Iss. 1 — Jan. 1, 2006
  • pp: 26–35

Spatial phase dislocations in femtosecond laser pulses

Kaloyan Bezuhanov, Alexander Dreischuh, Gerhard G. Paulus, Michael G. Schätzel, Herbert Walther, Dragomir Neshev, Wieslaw Królikowski, and Yuri Kivshar  »View Author Affiliations


JOSA B, Vol. 23, Issue 1, pp. 26-35 (2006)
http://dx.doi.org/10.1364/JOSAB.23.000026


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Abstract

We show that spatial phase dislocations associated with optical vortices can be embedded in femtosecond laser beams by computer-generated holograms, provided that they are built in a setup compensating for the introduced spatial dispersion of the broad spectrum. We present analytical results describing two possible arrangements: a dispersionless 4 f setup and a double-pass grating compressor. Experimental results on the generation of optical vortices in the output beam of a 20 fs Ti:sapphire laser and the proof-of-principle measurements with a broadband-tunable cw Ti:sapphire laser confirm our theoretical predictions.

© 2006 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(090.1760) Holography : Computer holography
(120.5060) Instrumentation, measurement, and metrology : Phase modulation
(140.3300) Lasers and laser optics : Laser beam shaping
(140.7090) Lasers and laser optics : Ultrafast lasers

ToC Category:
Lasers and Laser Optics

Citation
Kaloyan Bezuhanov, Alexander Dreischuh, Gerhard G. Paulus, Michael G. Schätzel, Herbert Walther, Dragomir Neshev, Wieslaw Królikowski, and Yuri Kivshar, "Spatial phase dislocations in femtosecond laser pulses," J. Opt. Soc. Am. B 23, 26-35 (2006)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-23-1-26

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