Creation of optical vortices in femtosecond pulses

by: Mariyenko, J Strohaber, C Uiterwaal

Optics Express, Vol. 13, No. 19. (September 2005), pp. 7599-7608.

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Abstract

We experimentally created a femtosecond optical vortex using a pair of computer-synthesized holographic gratings arranged in a 2f - 2f optical setup. We present measurements showing that the resulting donut mode is free of spatial chirp, and support this finding with an analysis of the optical wave propagation through our system based on the Kirchhoff-Fresnel diffraction integral. An interferogram confirms that our ultrashort vortex has topological charge 1, and a conservative experimental estimation of its duration is 280 fs. We used 25-fs radiation pulses (bandwidth approximately 40 nm) produced by a Ti:sapphire laser oscillator.

@article{Mariyenko-Strohaber-Uiterwaal-2005, abstract = {We experimentally created a femtosecond optical vortex using a pair of computer-synthesized holographic gratings arranged in a 2f - 2f optical setup. We present measurements showing that the resulting donut mode is free of spatial chirp, and support this finding with an analysis of the optical wave propagation through our system based on the Kirchhoff-Fresnel diffraction integral. An interferogram confirms that our ultrashort vortex has topological charge 1, and a conservative experimental estimation of its duration is 280 fs. We used 25-fs radiation pulses (bandwidth approximately 40 nm) produced by a Ti:sapphire laser oscillator.}, author = {Mariyenko and Strohaber, J. and Uiterwaal, C. }, citeulike-article-id = {1323035}, journal = {Optics Express}, keywords = {spatial-light-modulators, spatial-mode-selection}, month = {September}, number = {19}, pages = {7599--7608}, posted-at = {2007-05-23 23:24:58}, priority = {0}, title = {Creation of optical vortices in femtosecond pulses}, volume = {13}, year = {2005} }

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TY - JOUR ID - Mariyenko-Strohaber-Uiterwaal-2005 L3 - citeulike-article-id:1323035 TI - Creation of optical vortices in femtosecond pulses JF - Optics Express VL - 13 IS - 19 SP - 7599 EP - 7608 N2 - We experimentally created a femtosecond optical vortex using a pair of computer-synthesized holographic gratings arranged in a 2f - 2f optical setup. We present measurements showing that the resulting donut mode is free of spatial chirp, and support this finding with an analysis of the optical wave propagation through our system based on the Kirchhoff-Fresnel diffraction integral. An interferogram confirms that our ultrashort vortex has topological charge 1, and a conservative experimental estimation of its duration is 280 fs. We used 25-fs radiation pulses (bandwidth approximately 40 nm) produced by a Ti:sapphire laser oscillator. KW - spatial-light-modulators KW - spatial-mode-selection AU - Mariyenko AU - Strohaber, J AU - Uiterwaal, C PY - 2005/09// ER -

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