Researchers use artificial materials to enhance effectiveness of lasers

March 7, 2017, The National University of Science and Technology MISIS

Researchers from the National University of Science and Technology (NUST MISIS, Moscow) have found a way to enhance the effectiveness of lasers by using artificial metamaterials, according to an article published by Scientific Reports.

Metamaterials are substances engineered to have properties that are not found in nature. They are made from assemblies of multiple elements fashioned from composite materials and are capable of manipulating , for example, to make things invisible.

One of the most important practical uses of metamaterials is in laser technology. An interdisciplinary group of researchers working at NUST MISIS under the guidance of Professor George Tsironis, a senior researcher at the NUST MISIS Superconducting Metamaterials Laboratory, studied a model metamaterial composed of a semiconductor and dielectric layers that are thinner than the wavelength of incident radiation.

"These researchers have established that the presence of active (amplifying) dielectric media in photonic crystals can compensate for energy losses from the collision of electrons in semiconductor materials, and can also enhance the efficiency of nonlinear generation of radiation. They have also achieved a powerful response with a fivefold increase in frequency and a minimal scattering volume," reads a statement released by NUST MISIS.

"We have also established that the properties of nonlinear systems can change depending on the wave angle," Prof. Tsironis added.

This new property can be used not only in laser optics but also to manufacture sensory units, and so has vast potential for practical applications, the press release says.

Explore further: Researchers find a way to enhance the effectiveness of laser systems

Related Stories

Ultrasensitive nonlinear metamaterials for data transfer

June 24, 2016

Scientists have demonstrated the effect of all-optical switching between streams of photons, born during the third harmonic generation process, using non-linear metamaterials. Researchers at Lomonosov Moscow State University ...

Recommended for you

Accelerating light beams in curved space

January 12, 2018

By shining a laser along the inside shell of an incandescent light bulb, physicists have performed the first experimental demonstration of an accelerating light beam in curved space. Rather than moving along a geodesic trajectory ...

New exotic phenomena seen in photonic crystals

January 12, 2018

Topological effects, such as those found in crystals whose surfaces conduct electricity while their bulk does not, have been an exciting topic of physics research in recent years and were the subject of the 2016 Nobel Prize ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.