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Phase-shifted Fresnel axicon |
Optics Letters, Vol. 37, Issue 11, pp. 1980-1982 (2012)
http://dx.doi.org/10.1364/OL.37.001980
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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
OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(220.4000) Optical design and fabrication : Microstructure fabrication
(050.1965) Diffraction and gratings : Diffractive lenses
ToC Category:
Optical Design and Fabrication
History
Original Manuscript: March 14, 2012
Revised Manuscript: April 8, 2012
Manuscript Accepted: April 10, 2012
Published: May 30, 2012
Citation
A. Vijayakumar and Shanti Bhattacharya, "Phase-shifted Fresnel axicon," Opt. Lett. 37, 1980-1982 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-11-1980
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