Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Optics Express focus issue on chalcogenide photonics: Fabrication, devices and applications

07.12.2010
Recent progress in chalcogenide glass photonics has been driven by scientific and technological challenges in a variety of areas.

These range from increased demand for bandwidth in optical communications, to the emergence of bio-health hazards associated with hazardous microorganisms that absorb at mid-infrared wavelengths, to defense applications that require bright mid-infrared sources.

Additionally, chalcogenide glass provides a platform for fundamental investigations of light-matter interactions in nanophotonic structures, such as photonic crystals and metamaterials. To highlight breakthroughs in this area, Optics Express today published a special focus issue on Chalcogenide Photonics: Fabrication, Devices and Applications (http://www.opticsinfobase.org/oe/issue.cfm?volume=18&issue=25).

The issue was organized and edited by Benjamin Eggleton, director of the Australian Research Council's Centre for Ultrahigh-bandwidth Devices for Optical Systems and professor at the University of Sydney.

"This focus issue was created with the intent to represent the current state-of-the-art in the field of chalcogenide photonics," said Eggleton. "The combination of their unique optical properties with the flexibility in tailoring the composition and fabrication methodology makes the chalcogenides compelling for photonics research and has stimulated research groups around the world to actively pursue this vibrant area."

SUMMARY

Chalcogenide glasses contain as a major constituent one or more of the chalcogen elements from the periodic table (i.e. Sulphur, Selenium and Tellurium, but excluding Oxygen) covalently bonded to other elements such as As, Ge, Sb, Ga, Si, or P. Chalcogenide glasses have been studied since the 1950s due to their amazing optical properties. They have already found important applications in a number of areas, including the electronics industry and in imaging applications. In the last decade there has been renewed interest in these materials because of their unique optical nonlinear and midinfared properties. An optical material is said to be nonlinear if its optical properties depend on the intensity of the light, an effect that can lead to all-optical switching. The chalcogenide's nonlinear optical properties are not only very strong (hundreds of times that of conventional glass), but also extremely fast (on the order of 10s of femtoseconds—the time it takes for light to travel only a fraction of a millimeter). The fast and strong nonlinearity of chalcogenides makes them attractive as ultrafast nonlinear devices, which can operate much faster than state-of-the-art electronics, or in efficient frequency conversion schemes. In contrast to conventional glass, chalcogenide glasses are transmissive well into the mid-infrared region (e.g. sulphides transmit to ~11um) and are photosensitive to visible light.

This special issue reviews recent progress in this field with 13 invited articles from the leading groups in this field. This issue is comprehensive with articles that can be categorized into a number of areas: (i) chalcogenide material and device science, (ii) device fabrication, (iii) applications in nonlinear optics, and (iv) sensing applications.

KEY FINDINGS AND SELECTED PAPERS

The following papers are some of the highlights of the Optics Express focus issue on Chalcogenide Photonics. All are included in volume 18, issue 25 and can be accessed online at http://www.OpticsInfoBase.org/OE.

A paper from Yokohama National University in Japan and the Japan Science and Technology Agency reports massive optical nonlinearity in chalcogenide photonic crystal waveguides and demonstrates highly efficient nonlinear processes.

"Nonlinear light propagation in chalcogenide photonic crystal slow light waveguides." Keijiro Sukuzi, Toshihiko Baba, Yokohama National University, Japan Science and Technology Agency, p. 26675. (See: http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-25-26675.)

A team of researchers from five institutions in the U.S. and Italy report on novel sensing architectures for mid infrared wavelengths using chalcogenide waveguide resonators. They exploit the chalcogenide photosensitivity to post-trim resonators and compensate for fabrication imperfections.

"Integrated chalcogenide waveguide resonators for mid-IR sensing: leveraging material properties to meet fabrication challenges." Nathan Carlie et al., p. 26728 (See: http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-25-26728.)

About Optics Express

Optics Express reports on new developments in all fields of optical science and technology every two weeks. The journal provides rapid publication of original, peer-reviewed papers. It is published by the Optical Society and edited by C. Martijn de Sterke of the University of Sydney. Optics Express is an open-access journal and is available at no cost to readers online at http://www.OpticsInfoBase.org/OE.

About OSA

Uniting more than 106,000 professionals from 134 countries, the Optical Society (OSA) brings together the global optics community through its programs and initiatives. Since 1916 OSA has worked to advance the common interests of the field, providing educational resources to the scientists, engineers and business leaders who work in the field by promoting the science of light and the advanced technologies made possible by optics and photonics. OSA publications, events, technical groups and programs foster optics knowledge and scientific collaboration among all those with an interest in optics and photonics. For more information, visit www.osa.org.

Angela Stark | EurekAlert!
Further information:
http://www.osa.org

More articles from Physics and Astronomy:

nachricht New way to write magnetic info could pave the way for hardware neural networks
21.11.2017 | Imperial College London

nachricht From Hannover around the world and to the Mars: LZH delivers laser for ExoMars 2020
21.11.2017 | Laser Zentrum Hannover e.V.

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

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

Im Focus: Nanoparticles help with malaria diagnosis – new rapid test in development

The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.

Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

Im Focus: Novel Nano-CT device creates high-resolution 3D-X-rays of tiny velvet worm legs

Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.

During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....

Im Focus: Researchers Develop Data Bus for Quantum Computer

The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.

Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

From Hannover around the world and to the Mars: LZH delivers laser for ExoMars 2020

21.11.2017 | Physics and Astronomy

Borophene shines alone as 2-D plasmonic material

21.11.2017 | Materials Sciences

Penn study identifies new malaria parasites in wild bonobos

21.11.2017 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>