Angular spectrum calculations for arbitrary focal length with a scaled convolution

Nyquist sampling theorem in an image calculation with angular spectrum method restricts a propagation distance and a focal length of a lens. In order to avoid these restrictions, we studied suitable expressions for the image computations depending on their conditions. Additionally, a lateral scale i...

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Bibliographic Details
Published in:Optics express 2011-07, Vol.19 (15), p.14268-14276
Main Authors: Odate, Satoru, Koike, Chiaki, Toba, Hidemitsu, Koike, Tetsuya, Sugaya, Ayako, Sugisaki, Katsumi, Otaki, Katsura, Uchikawa, Kiyoshi
Format: Article
Language:English
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Summary:Nyquist sampling theorem in an image calculation with angular spectrum method restricts a propagation distance and a focal length of a lens. In order to avoid these restrictions, we studied suitable expressions for the image computations depending on their conditions. Additionally, a lateral scale in an observation plane can be magnified freely by using a scaled convolution in each expression.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.19.014268