9 June 2006 Analysis of amplitude and phase coupling in volume holography
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Proceedings Volume 6252, Holography 2005: International Conference on Holography, Optical Recording, and Processing of Information; 62521H (2006); doi: 10.1117/12.677159
Event: Holography 2005: International Conference on Holography, Optical Recording, and Processing of Information, 2005, Varna, Bulgaria
Abstract
In this work we analyse the complex amplitude response of volume holograms. This analysis suggests a new scheme for encoding complex amplitude wavefront information onto an optical hologram which may prove useful for combining computer-generated holograms (CGH) onto volume holograms. Specifically, we analyse the amplitude and phase modulation associated with a volume phase unslanted transmission grating. Using the expressions given by the Kogelnik's coupled wave theory (KCWT) we find that there is a coupling between the amplitude and the phase modulations. This coupling can be controlled to some extent by means of the reconstruction angle: we have found that the significant magnitude is the normalized Bragg detune angle. A large variation range of the grating strength is desirable, which is enhanced by the use of shorter wavelengths, and materials exhibiting overmodulation capability and/or with a high thickness.
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A. Márquez, C. Neipp, L. P. Yaroslavsky, S. Gallego, M. Ortuño, A. Beléndez, I. Pascual, "Analysis of amplitude and phase coupling in volume holography", Proc. SPIE 6252, Holography 2005: International Conference on Holography, Optical Recording, and Processing of Information, 62521H (9 June 2006); doi: 10.1117/12.677159; http://dx.doi.org/10.1117/12.677159
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KEYWORDS
Modulation

Phase shift keying

Holograms

Volume holography

Computer generated holography

Phase modulation

Holography

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