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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 36 — Dec. 20, 2007
  • pp: 8583–8590

Ultrashort intense-field optical vortices produced with laser-etched mirrors

James Strohaber, Timothy D. Scarborough, and Cornelis J. G. J. Uiterwaal  »View Author Affiliations


Applied Optics, Vol. 46, Issue 36, pp. 8583-8590 (2007)
http://dx.doi.org/10.1364/AO.46.008583


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Abstract

We introduce a simple and practical method to create ultrashort intense optical vortices for applications involving high-intensity lasers. Our method utilizes femtosecond laser pulses to laser etch grating lines into laser-quality gold mirrors. These grating lines holographically encode an optical vortex. We derive mathematical equations for each individual grating line to be etched, for any desired (integer) topological charge. We investigate the smoothness of the etched grooves. We show that they are smooth enough to produce optical vortices with an intensity that is only a few percent lower than in the ideal case. We demonstrate that the etched gratings can be used in a folded version of our 2 f 2 f setup [Opt. Express 19, 7599 (2005)] to compensate angular dispersion. Finally, we show that the etched gratings withstand intensities of up to 10 12 W / cm 2 .

© 2007 Optical Society of America

OCIS Codes
(050.1590) Diffraction and gratings : Chirping
(050.1950) Diffraction and gratings : Diffraction gratings
(090.1760) Holography : Computer holography
(140.3300) Lasers and laser optics : Laser beam shaping
(320.7090) Ultrafast optics : Ultrafast lasers

ToC Category:
Ultrafast Optics

History
Original Manuscript: September 26, 2007
Manuscript Accepted: October 30, 2007
Published: December 13, 2007

Citation
James Strohaber, Timothy D. Scarborough, and Cornelis J. G. J. Uiterwaal, "Ultrashort intense-field optical vortices produced with laser-etched mirrors," Appl. Opt. 46, 8583-8590 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-36-8583

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