Photographing by means of a diffractive axicon

Details Photographing by means of a diffractive axicon Photographing by means of a diffractive axicon

2007-01-19

arxiv.org/abs/physics/0701234v2

Physics

Physics Education

20 pages, 11 figures

Scientific paper

In this paper we demonstrate that the light diffracted by a simple compact
disc can be used to generate photographic images of a certain kind. Being the
compact disc an axicon that generates a diffraction-free beam, we show that the
focusing position of an image depends of the wavelength of the diffracted
light, what makes possible its use as a spectral filter.

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