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Phase-shifted Fresnel axicon
Anand Vijayakumar,
Published in
2012
Volume: 37
   
Issue: 11
Pages: 1980 - 1982
Abstract
We propose an optical element: a phase-shifted Fresnel axicon for generation of multiple Bessel beams. By giving a binary phase modulation to the standard Fresnel axicon, the proposed element is generated. The phase profile of the binary phase modulation is engineered to generate two and three Bessel beams of equal intensities. This composite optical element is fabricated using electron beam direct writing. The performance of the fabricated device is evaluated using a semiconductor laser, and the generation of two and three Bessel beams is successfully demonstrated. © 2012 Optical Society of America.
About the journal
JournalOptics Letters
ISSN01469592
Open AccessNo
Concepts (11)
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    Bessel beam
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    ELECTRON BEAM DIRECT WRITING
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    FABRICATED DEVICE
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    FRESNEL
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    PHASE PROFILE
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    PHASE SHIFTED
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    Electron beams
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    Laser beams
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    Phase shift
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    Semiconductor lasers
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    Bessel functions