3-D holographic display is updatable and rewritable

Researchers from the University of Arizona, in conjunction with Nitto Denko Technical Corporation (Oceanside, CA), have created a holographic three-dimensional (3-D) display that can record and display new images every few minutes. The display can record an image in a matter of minutes, can be viewed for several hours without the need to refresh or wear special eyewear, and can be erased and updated with new images when desired.

Click here to enlarge image

The key, according to researcher Savas Tay, is the photorefractive polymers on which the display is based. To be suitable for 3-D displays, photorefractive polymers must have nearly 100% diffraction efficiency, fast writing time, hours of image persistence, rapid erasure, and large area—a combination of properties that was not available before. Tay and colleagues have developed a composite that consists of a copolymer with a hole-transporting moiety and a carbaldehyde aniline group, attached through an alkoxy linker. Images are written into the polyacrylate tetraphenyldiaminobiphenyl-type polymer using a 532 nm laser and an externally applied electric field. The scientists take pictures of an object or scene from many 2-D perspectives, and the holographic display assembles the two-dimensional perspectives into a 3-D picture. The nonlinear optical properties were achieved by adding a fluorinated dicyanostryrene chromophore. The composite was formed into thin-film devices by melting it between two indium tin oxide-coated glass electrodes. The resulting prototype is the largest photorefractive 3-D display achieved to date (4 × 4 in.) and is scalable to full parallax and color. Contact Savas Tay at savas.tay@optics.arizona.edu.

Most Popular Articles

50 YEARS OF GAS LASERS


Durable survivors evolve new forms

Webcasts

Laser Measurements Critical to Successful Additive Manufacturing Processes

Maximizing the stability of the variables going into any manufacturing process is what ensures ts consistency and high quality. Specifically, when a laser is...

Ray Optics Simulations with COMSOL Multiphysics

The Ray Optics Module can be used to simulate electromagnetic wave propagation when the wavelength is much smaller than the smallest geometric entity in the ...

Multichannel Spectroscopy: Technology and Applications

This webcast, sponsored by Hamamatsu, highlights some of the photonic technology used in spectroscopy, and the resulting applications.

Handheld Spectrometers

Spectroscopy is a powerful and versatile tool that traditionally often required a large and bulky instrument. The combination of compact optics and modern pa...
White Papers

All About Aspheric Lenses

The most notable benefit of aspheric lenses is their ability to correct for spherical aberration....

Wavelength stabilized multi-kW diode laser systems

Wavelength stabilization of high-power diode laser systems is an important means to increase the ...

Narrow-line fiber-coupled modules for DPAL pumping

A new series of fiber coupled diode laser modules optimized for DPAL pumping is presented, featur...
Technical Digests

FREEFORM OPTICS: Top-notch capabilities lead to expanded possibilities

The use of free-form aspherical surfaces in an optical system can give it abilities impossible to...

RAMAN SPECTROSCOPY: The technical advances just keep coming

In Raman spectroscopy, light from a laser interacts with a test sample, undergoing a wavelength s...

ADHESIVES, SEALANTS, AND COATINGS: Solutions for optical technologies

A vast array of optical systems of various types and degrees of complexity require the use of adh...

Click here to have your products listed in the Laser Focus World Buyers Guide.
Social Activity
  •  
  •  
  •  
  •  
  •  
Copyright © 2007-2014. PennWell Corporation, Tulsa, OK. All Rights Reserved.PRIVACY POLICY | TERMS AND CONDITIONS