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Axicon
An axicon is a specialized type of lens which has a conical surface. An axicon images a point source into a line along the optic axis, or transforms a laser beam into a ring.[1] It can be used to turn a Gaussian beam into an approximation to a Bessel beam, with greatly reduced diffraction.[2][3]
References
^ Proteep Mallik (2005). "The Axicon". Retrieved 2007-11-22.
^ Kishan Dholakia; David McGloin, and Vene Garcés-Chávez (2002). "Optical micromanipulating using a self-reconstructing light beam". Retrieved 2007-11-22.
^ V. Garcés-Chávez; D. McGloin, H. Melville, W. Sibbett and K. Dholakia (2002). "Simultaneous micromanipulation in multiple planes using a self-reconstructing light beam". Nature 419 (6903): 145–7. Bibcode 2002Natur.419..145G. doi:10.1038/nature01007. PMID 12226659. Retrieved 2007-02-06.
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