Test of key elements for common path holography

Trautner, H.; Hossfeld, Wolfgang; Knittel, Joachim; Malki, Oliver; Przygodda, Frank; Richter, Hartmut

doi:10.1117/12.623549

Cited by 3 publications

(3 citation statements)

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“…Variants of collinear holographic recording (sometimes also referred to as "coaxial" or "common path" HDS) have been explored by a number of groups including Optware Corporation, Sony Corporation, and the Athos consortium [24]. A schematic of the collinear models used for this paper is shown in Fig.…”

Section: B Collinear Modelsmentioning

confidence: 99%

Medium consumption in holographic memories

Ayres

McLeod

2009

Appl. Opt.

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The dynamic range of holographic storage media is traditionally characterized in terms of M/#. However, this is a system parameter that assumes simple, uniform plane-wave holograms. Realistic architectures violate this assumption so that M/# measured with plane waves cannot be used to predict system diffraction efficiency. Thus, there currently is no systematic method predicting signal strength and medium consumption for holographic storage architectures a priori. We define a new material parameter, the modulation integral, M(I), and show how this may be used for dynamic range budgeting and diffraction efficiency prediction in complex storage systems. The method is illustrated by applying it to two architectures, collinear and angle polytopic, in order to estimate the M/# required for achieving a target storage density in the presence of empirical optical scatter noise.

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Section: B Collinear Modelsmentioning

confidence: 99%

Medium consumption in holographic memories

Ayres

McLeod

2009

Appl. Opt.

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“…In Fig. 3 a new, so-called common-aperture reflectiontype coaxial holographic storage system is shown; 6,7) it was developed by the European consortium named ATHOS. The signal and reference beams are in-coupled and out-coupled at the confocally arranged Fourier planes in this optical layout.…”

Section: Object Areamentioning

confidence: 99%

Comparison of Coaxial Holographic Storage Arrangements from the M Number Consumption Point of View

Kárpáti¹,

Bankó²,

Szarvas³

et al. 2007

jjap

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There are two known competitive arrangements for reflection-type coaxial holographic storage systems: the optical layout developed by OPTWARE, which is a so-called collinear or ''split-aperture system'', and the ''common-aperture system'' developed by the European consortium named ATHOS. We modeled the reference diffraction noise for both arrangements by the beam propagation method (BPM), and compared the results from the M number (M#) consumption point of view. We suggest the use of reference beam apodization for the split aperture system to reduce the diffraction noise caused by the reference beam at the object area.

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“…5) In this paper we describe a novel holographic concept, called ''common-aperture holography'', which was developed in the framework of the European ATHOS project. 6,7) It is a coaxial concept as the collinear concept. Its main advantage is that the whole numerical aperture of the objective lens can be used for the object beam, resulting in a high single hologram data density.…”

Section: Introductionmentioning

confidence: 99%