Abstract : In this paper we propose a very simple device that acts as an adjustable axicon: it simply consists in a 0.25mm thick silicon wafer deformed in its centre by a small ball. Beam shapings comparable to those usually generated by axicon are observed: Bessel beams and dark hollow beams, both very useful in cold atoms manipulation.
https://hal-cea.archives-ouvertes.fr/cea-00351086 Contributor : Chantal BrassyConnect in order to contact the contributor Submitted on : Thursday, January 8, 2009 - 2:13:07 PM Last modification on : Saturday, June 25, 2022 - 9:45:59 AM