2D refractive-index mapping models cosmological systems

July 11, 2013
Researchers in Saudi Arabia are looking at planar (2D) optical refractive-index distributions that, if created using a metamaterial, could become an experimental way of creating many observable analogies to celestial mechanics such as gravitational attractors.

Researchers at King Abdullah University of Science and Technology (Thuwal, Saudi Arabia) and King Fahd University of Petroleum and Minerals (Dhahran, Saudi Arabia) are looking at planar (2D) optical refractive-index distributions that, if created using a metamaterial, could become an experimental way of creating many observable analogies to celestial mechanics such as gravitational attractors. For example, in a stationary, planar, rotationally symmetric index mapping, light could “orbit” the center. Depending on the index distribution, incoming light could be captured by the device as a cosmological black hole would.

The refractive index falls within the range of 0.8 to 3.5 (making metamaterials the primary way of experimental realization). In addition to a rotationally symmetric version, a mapping with two lobes can mimic a cosmological binary system. Practical uses for the concept also exist: because the light paths are very sensitive to the refractive-index distribution, a sensor could be created that would take advantage of very small changes in refractive index (for example, resulting from changes in temperature or chemical concentration). The researchers propose numerous other applications, including as transient optical memories of an optical delay, a light concentrator, a chaotic cavity, and a beam homogenizer. Contact Boon S. Ooi at [email protected].

About the Author

John Wallace | Senior Technical Editor (1998-2022)

John Wallace was with Laser Focus World for nearly 25 years, retiring in late June 2022. He obtained a bachelor's degree in mechanical engineering and physics at Rutgers University and a master's in optical engineering at the University of Rochester. Before becoming an editor, John worked as an engineer at RCA, Exxon, Eastman Kodak, and GCA Corporation.

Sponsored Recommendations

Demonstrating Flexible, Powerful 5-axis Laser Micromachining

Sept. 18, 2024
Five-axis scan heads offer fast and flexible solutions for generating precise holes, contoured slots and other geometries with fully defined cross sections. With a suitable system...

Enhance Your Experiments with Chroma's Spectra Viewer

Sept. 5, 2024
Visualize and compare fluorescence spectra with our interactive Spectra Viewer tool. Easily compare and optimize filters and fluorochromes for your experiments with this intuitive...

Optical Filter Orientation Guide

Sept. 5, 2024
Ensure optimal performance of your optical filters with our Orientation Guide. Learn the correct placement and handling techniques to maximize light transmission and filter efficiency...

Ensure Optimal Performance with Shortpass Filters

Sept. 5, 2024
Achieve precise wavelength blocking with our Shortpass Filters. Ideal for applications requiring effective light transmission and cutoff, these filters ensure optimal performance...

Voice your opinion!

To join the conversation, and become an exclusive member of Laser Focus World, create an account today!