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Optical Engineering

Generation of hollow conic beams using a metal axicon mirror
Author(s): S. R. Mishra; S. K. Tiwari; S. P. Ram; S. C. Mehendale
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Paper Abstract

We propose and demonstrate generation of hollow conic beams using a new element-a metal axicon mirror. A good-quality hollow conic beam was generated from a Gaussian laser beam with high conversion efficiency. We also show that by focusing the hollow conic beam with suitable lenses, it is possible to obtain a weakly converging hollow beam for which the diameter remains between 1 and 3 mm over a propagation distance of about 10 cm, which should be of interest for atom-guiding applications. In the focal region, a nearly nondiffracting central spot of size ≈13 μm (FWHM) was observed for a propagation distance of ≈8 mm.

Paper Details

Date Published: 1 August 2007
PDF: 5 pages
Opt. Eng. 46(8) 084002 doi: 10.1117/1.2771155
Published in: Optical Engineering Volume 46, Issue 8
Show Author Affiliations
S. R. Mishra, Ctr. for Advanced Technology (India)
S. K. Tiwari, Ctr. for Advanced Technology (India)
S. P. Ram, Ctr. for Advanced Technology (India)
S. C. Mehendale, Ctr. for Advanced Technology (India)

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