Authors
Jérôme Martin, Julien Proust, Davy Gérard, Jean-Louis Bijeon, Jérôme Plain,
Title
Intense Bessel-like beams arising from pyramid-shaped microtips
In
Optics letters
Volume
37
Issue
7
Pages
1274–1276
Publisher
OSA
Year
2012
Publisher's URL
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-7-1274
Indexed by
Abstract
We show both numerically and experimentally that intense, narrow, and low-divergence beams of light are produced at the apex of dielectric pyramid-shaped microtips. These beams exhibit a Bessel transverse profile but are narrower than the usual Bessel beam, allowing for a significant enhancement of the light intensity inside the beam. They are generated by axicon-like structures with submicrometric height imprinted in glass by combining optical lithography and chemical etching. The resulting beams are experimentally imaged using fluorescence microscopy, in remarkable agreement with numerical computations.
Affiliations
Offprint