Methods and Applications of Optical Holography

Abstract

After invention of holography by Dennis Gabor in 1947 it is widely used in various areas. The development of new holography methods made it suitable for new industrial and scientific applications: printing, security and authentication, sensors, data storage, particles analysis, etc. This review will focus mainly on the development of the optical holography and its application for security and authentication. Other methods and applications such as measurements, particle analysis and data storage are discussed as well.<p><a href="http://dx.doi.org/10.5755/j01.ms.17.4.771">http://dx.doi.org/10.5755/j01.ms.17.4.771</a></p

An Architecture for Biometric Electronic Identification Document System Based on Blockchain †

“…It is widely used for the human readable digits in Universal Product Code (UPC) barcodes) characters are used. Authors in [25] defines a hologram as a three-dimensional image reproduced from an interference pattern recorded by coherent light beams, this image reproduce different figures by means of movement or the simple reflection of light. Recently the work in [26], has extended the concept of holograms by proposing a digital holography (DH) system for authentication using a charged-coupled device (CCD) camera and a numerical 3D image reconstruction.…”

Understanding Basics Holography: Review Principle and Recording Technique of Holography

“…Security and authentication is most common area for holography and diffractive optics applications. The demand on security being dictated by steady to growing of piracy and counterfeiting (Andrelevicius, 2011). There so many advantages to bring oh technology, like the most OH are designed to make positive impression, easy to recognizable by inexperienced user, complicated manufacturing of OH, and inexpensive.…”

Holographic interferometry for security and forensic applications

“…In this embossed holographic format, for commercial purpose, after the first step of transmission hologram recording, it includes several technological steps such as recording of phase relief white light viewable master hologram, silvering, electroforming, embossing, metalizing, coating and cutting/slitting etc. Here the first transmission holograms are usually recorded on silver halide photo plate using He-Ne laser and in the second step of recording of phase relief master hologram, it is carried out by using the photo resist layers and powerful He-Cd laser [10][11][12][13][14][15] . Though various technologies involved for the final embossed 3D hologram for commercial security applications, this paper describes about our efforts, investigations and result obtained by introducing holographic interferometry in the first step of transmission holograms recording for fringe modulation to enhance the security.…”