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High quality digital holographic reconstruction on analog film

 
: Nelsen, Bryan; Hartmann, Peter

:
Fulltext urn:nbn:de:0011-n-4562578 (579 KByte PDF)
MD5 Fingerprint: e56acfaebba346378fe2fe7e8ad5bbd8
Copyright Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Created on: 5.1.2018


Hrabovsky, Miroslav (Hrsg.) ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Holography: Advances and Modern Trends V : 24-27 April 2017, Prague, Czech Republic
Bellingham, WA: SPIE, 2017 (Proceedings of SPIE 10233)
ISBN: 978-1-5106-0967-9
ISBN: 978-1-5106-0968-6
Paper 1023319, 6 pp.
Conference "Holography - Advances and Modern Trends" <5, 2017, Prague>
English
Conference Paper, Electronic Publication
Fraunhofer IWS ()
3D lithography; digital holography; Hologram; holography

Abstract
High quality real-Time digital holographic reconstruction, i.e. at 30 Hz frame rates, has been at the forefront of research and has been hailed as the holy grail of display systems. While these efforts have produced a fascinating array of computer algorithms and technology, many applications of reconstructing high quality digital holograms do not require such high frame rates. In fact, applications such as 3D holographic lithography even require a stationary mask. Typical devices used for digital hologram reconstruction are based on spatial-light-modulator technology and this technology is great for reconstructing arbitrary holograms on the fly; however, it lacks the high spatial resolution achievable by its analog counterpart, holographic film. Analog holographic film is therefore the method of choice for reconstructing highquality static holograms. The challenge lies in taking a static, high-quality digitally calculated hologram and effectively writing it to holographic film. We have developed a theoretical system based on a tunable phase plate, an intensity adjustable high-coherence laser and a slip-stick based piezo rotation stage to effectively produce a digitally calculated hologram on analog film. The configuration reproduces the individual components, both the amplitude and phase, of the hologram in the Fourier domain. These Fourier components are then individually written on the holographic film after interfering with a reference beam. The system is analogous to writing angularly multiplexed plane waves with individual component phase control.

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