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Proceedings Paper

Holographic grating: a useful tool
Author(s): Dagmar Senderáková; Milan Drzik; Anton Strba; Vladimir Mesaros
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Paper Abstract

Holography enables us to create various optical elements, in a simply way. They can be used for any purpose that conventional optical elements can be used for. Especially holographic gratings can demonstrate the advantage of such an approach. To make the dense line structure of a grating classically, a special ruling engine had to be used. Instead mechanically ruled grating grooves a hologram of a plane wave with plane reference wave can be recorded. The interference pattern has the form of regular parallel strips - intensity maxims and the grating interval can be changed very simply, by choosing a proper angle between the interfering waves. Exposition allows us to form the grating profile. The contribution is to present some of our results, applicable during educational process (master study - Optics, lasers and optical spectroscopy), too. A holographic grating may become a simple and useful tool to reveal real temporal coherence properties of widely used laser diode modules and determine frequency spacing ▵ν when more longitudinal modes are generated. Moreover, when choosing a proper angle between two interfering waves creating the grating, the grating interval Λ may become less than the wavelength λ, and a sub-wavelength structure can be created in a simply way if a proper recording medium is accessible. That enables us to model light spreading phenomena when approaching sub-wavelength structures.

Paper Details

Date Published: 11 October 2011
PDF: 8 pages
Proc. SPIE 8306, Photonics, Devices, and Systems V, 83061O (11 October 2011); doi: 10.1117/12.912313
Show Author Affiliations
Dagmar Senderáková, Comenius Univ. (Slovakia)
Milan Drzik, Comenius Univ. (Slovakia)
Anton Strba, Comenius Univ. (Slovakia)
Vladimir Mesaros, Comenius Univ. (Slovakia)

Published in SPIE Proceedings Vol. 8306:
Photonics, Devices, and Systems V
Pavel Tománek; Dagmar Senderáková; Petr Páta, Editor(s)

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