Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


Photorefractive polymer advancements show promise for holography, optics and data storage


Photorefractive organic polymer system functionalized with a nonlinear optical chromophore boronate derivative

Photoconducting polymers doped with nonlinear optical chromophores have emerged as efficient and inexpensive photorefractive (PR) materials. These materials show promise for applications in dynamic volume holography, image formation, optical processing, reversible data storage, correlation, etc.

Recently, PR polymer composites have gained a great amount of attention due to their large PR effect, structural flexibility, and good processability.

J. L. Maldonado, G. Ramos-Ortíz, O. Barbosa-García, M. A. Meneses-Nava, M. Olmos-López, D. Rodríguez, H. Reyes, B. Muñoz and N. Farfán from Centro de Investigaciones en Óptica and Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (IPN) have published a study in AZojomo*, in which they fabricated PR composites functionalized with a boron derivative nonlinear chromophore.

Their work examined the diffraction efficiency, the optical gain coefficient, the phase shift, and the effect on the chromophore orientation at room temperature as a function of poly(9-vinylcarbazole):9-ethylcarbazole (PVK:ECZ) ratio of PR composites based on the dye 2-(p-chlorophenyl)-(3’-nitrobenzo[d])-(4’’-methoxybenzo[h])-1,3-dioxa-6-aza-2-boracyclonon-6-ene.

For the photorefractive performance, two different chromophore concentrations were used, in addition, the ratio of PVK:ECZ was varied to see the effect on the room temperature molecular orientation. Holographic experiments in a tilted four and two wave mixing geometry were performed. Acceptable photorefractive properties were observed for a polymer with a glass transition temperature (Tg) of 77°C. Even at this Tg, the response time was less than one second.

Dr. Ian Birkby | EurekAlert!
Further information:

More articles from Materials Sciences:

nachricht From ancient fossils to future cars
21.10.2016 | University of California - Riverside

nachricht Study explains strength gap between graphene, carbon fiber
20.10.2016 | Rice University

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Light-driven atomic rotations excite magnetic waves

Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion

Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...

Im Focus: New 3-D wiring technique brings scalable quantum computers closer to reality

Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.

"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...

Im Focus: Scientists develop a semiconductor nanocomposite material that moves in response to light

In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.

A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...

Im Focus: Diamonds aren't forever: Sandia, Harvard team create first quantum computer bridge

By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.

"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...

Im Focus: New Products - Highlights of COMPAMED 2016

COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.

In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...

All Focus news of the innovation-report >>>



Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

Agricultural Trade Developments and Potentials in Central Asia and the South Caucasus

14.10.2016 | Event News

World Health Summit – Day Three: A Call to Action

12.10.2016 | Event News

Latest News

First-time reconstruction of infectious bat influenza viruses

25.10.2016 | Life Sciences

Novel method to benchmark and improve the performance of protein measumeasurement techniques

25.10.2016 | Life Sciences

Amazon rain helps make more rain

25.10.2016 | Life Sciences

More VideoLinks >>>