Beam-shaping random phase mask for holographic storage

Author

Knittel, Joachim ; Przygodda, Frank ; Malki, Oliver ; Trautner, Heiko ; Richter, Hartmut

Author_Institution

Deutsche Thomson OHG, Villingen-Schwenningen

fYear

2009

fDate

10-13 May 2009

Firstpage

67

Lastpage

69

Abstract

The reference beam of a holographic data storage system should have a flat intensity profile to achieve a homogenous illumination of the signal beam inside the recording medium. In systems with a focused reference beam this is usually not the case. We introduce a binary phase mask with beam shaping characteristics that improves the homogeneity of the reference beam in the focal plane. Simulations show a significant improvement of the data page image quality.

Keywords

focal planes; holographic storage; holography; masks; optical design techniques; optical images; beam-shaping random phase mask; binary phase mask; data page image quality; focal plane; hologram; holographic data storage; homogenous illumination; recording medium; reference beam homogeneity; signal beam; Data storage systems; Diffraction; Filtering; Focusing; Frequency; Holographic optical components; Holography; Lighting; Low pass filters; Optical modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Data Storage Topical Meeting, 2009. ODS '09.

Conference_Location

Lake Buena Vista, FL

Print_ISBN

978-1-4244-3342-1

Electronic_ISBN

978-1-4244-3343-8

Type

conf

DOI

10.1109/ODS.2009.5031756

Filename

5031756