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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
Focusing properties of vector vortex beams emitted by photonic-crystal lasers
Kyoko Kitamura1, Kyosuke Sakai, Naoki Takayama
1Department of Electronic Science and Engineering, Kyoto University, Kyoto 615-8510, Japan. kyoko@qoe.kuee.kyoto‑u.ac.jp
Optics Letters
|June 29, 2012
Abstract:
We experimentally investigate the focusing properties of first- and second-order vector beams and vector vortex beams generated by photonic-crystal lasers. When the azimuthal indices of the vector beam (l) and the phase dependence (n) match, strong intensity appears at the center of focus. Our theoretical analyses agree well with the experimental results and predict that the central intensity has circular polarization.
