Navigation Links
All-optical transistor
Date:11/11/2010

Controlling and modulating the flow of light is essential in today's telecommunications-based society. Professor Tobias Kippenberg and his team in EPFL's Laboratory of Photonics and Quantum Measurements have discovered a novel way to couple light and vibrations. Using this discovery, they built a device in which a beam of light traveling through an optical microresonator could be controlled by a second, stronger light beam. The device thus acts like an optical transistor, in which one light beam influences the intensity of another.

Their optical microresonator has two characteristics: first, it traps light in a tiny glass structure, guiding the beam into a circular pattern. Second, the structure vibrates, like a wine glass, at well-defined frequencies. Because the structure is so tiny (a fraction of the diameter of a human hair), these frequencies are 10,000 times higher than a wineglass vibration. When light is injected into the device, the photons exert a force called radiation pressure, which is greatly enhanced by the resonator. The increasing pressure deforms the cavity, coupling the light to the mechanical vibrations. If two light beams are used, the interaction of the two lasers with the mechanical vibrations results in a kind of optical "switch": the strong "control" laser can turn on or off a weaker "probe" laser just as in a electronic transistor.

"We have known for more than two years that this effect was theoretically possible," explains Max-Planck Institute scientist Albert Schliesser, but pinning it down proved difficult. "Once we knew where to look, it was right there," recalls EPFL PhD student Stefan Weis, one of the lead authors of the paper. Senior EPFL scientist Samuel Delglise notes that "the agreement between theory and experiment is really striking."

Applications of this novel effect, baptised "OMIT" (optomechanically-induced transparency), could provide entirely new functionality to photonics. Radiation-t
'/>"/>

Contact: Tobias Kippenberg
tobias.kippenberg@epfl.ch
41-216-934-428
Ecole Polytechnique Fdrale de Lausanne
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. McGill physicists find a new state of matter in a transistor
2. USC researchers print dense lattice of transparent nanotube transistors on flexible base
3. Mysterious charge transport in self-assembled monolayer transistors unraveled
4. Nanoelectronic transistor combined with biological machine could lead to better electronics
5. Nanowires key to future transistors, electronics
6. Scientists create worlds first molecular transistor
7. Nanoribbons for graphene transistors
8. New nanoscale transistors allow sensitive probing inside cells
9. UCLA chemists, engineers achieve world record with high-speed graphene transistors
10. New computer switches handle heat that renders transistors useless
11. Triple-mode transistors show potential
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
All-optical transistor
(Date:7/31/2014)... Boston’s Adult Stem Cell Technology Center, ... adult stem cell biotechnologies. Currently the company holds ... additional patent applications currently under examination by the U.S. ... two of the most vexing problems in adult stem ... cells are difficult to identify; and they have been ...
(Date:7/30/2014)... 2014  Decision Resources Group finds that the ... the United States believe ... will be the level of savings achievable by ... lower cost to patients. Payers plan to leverage ... pricing expectations in order to encourage physician prescribing ...
(Date:7/30/2014)... Selexis SA , a serial innovation company ... cell line development, announced today new data from the ... at the 10th Annual Cell Line Development and ... 2014 at the Double Tree by Hilton Berkeley Marina ... be presented during an oral presentation: , Title: Genome ...
(Date:7/30/2014)... (PRWEB) July 30, 2014 BCC Research ... Global Markets for Enzymes in Industrial Applications , the ... to nearly $7.1 billion by 2018, registering a five-year ... is estimated to be recorded in the detergent enzyme ... period. , Enzyme technology has influenced almost every sector ...
Breaking Biology Technology:The Adult Stem Cell Technology Center, LLC Launches A Marketing Campaign To License Adult Stem Cell Biotechnologies 2The Adult Stem Cell Technology Center, LLC Launches A Marketing Campaign To License Adult Stem Cell Biotechnologies 3Surveyed U.S. Payers Expect Cost Savings to MCOs and Patients to be the Strongest Drivers of Biosimilar Uptake 2Surveyed U.S. Payers Expect Cost Savings to MCOs and Patients to be the Strongest Drivers of Biosimilar Uptake 3Selexis SA to Present New Data and a Case Study at IBC’s Cell Line Development and Engineering Conference 2Selexis SA to Present New Data and a Case Study at IBC’s Cell Line Development and Engineering Conference 3Global Market for Industrial Enzymes to Reach Nearly $7.1 Billion by 2018; Detergent Enzyme Market to Record Maximum Growth 2Global Market for Industrial Enzymes to Reach Nearly $7.1 Billion by 2018; Detergent Enzyme Market to Record Maximum Growth 3
... Friday announced the availability of RFID 360, a ... major retailer and Department of Defense compliance. RFID 360 ... RFID implementation environment and schedule. , ,The first software ... others, is RFID Data Manager. Data Manager is designed ...
... engine company, set the business world abuzz with the ... so it released data about its financial performance that ... analysts however, criticized the company and its founders for ... proposed for its stock offering. While some trepidation is ...
... Note: The Wisconsin Technology Network is committed to ... and deployment of technology. We salute the administration and ... help spread the adoption health technology. If you ... should attend the following event. , ,The ...
Cached Biology Technology:RedPrairie announces RFID 360 compliance software 2Why Google Matters 2Why Google Matters 3The doctor is in: Thompson prescribes better health information technology 2The doctor is in: Thompson prescribes better health information technology 3The doctor is in: Thompson prescribes better health information technology 4
(Date:7/30/2014)... the potential effects of climate change on the ... the wrong factors, according to a new paper ... Society, University of Queensland, and other organizations. The ... is missing the point when it comes to ... climate change scientists focus on the "direct" threats ...
(Date:7/30/2014)... Helsinki and the Universitat Autnoma de Barcelona have been ... have taken millions of years to occur. Through small ... teeth, induced in the laboratory, scientists have obtained teeth ... the fossil registry of rodent species which separated from ... the development of their teeth, the team from the ...
(Date:7/30/2014)... dominance in female baboons suggests that the route to a ... to have lots of supportive sisters. , A female baboon,s ... by the rank of her mother - the higher the ... this reason, dominance rank in female baboons is thought to ... guaranteed a good spot in the pecking order, whereas females ...
Breaking Biology News(10 mins):Conservation scientists asking wrong questions on climate change impacts on wildlife 2Scientists reproduce evolutionary changes by manipulating embryonic development of mice 2Supportive moms and sisters boost female baboon's rank 2Supportive moms and sisters boost female baboon's rank 3
... A new Queen,s University study shows that detergents used ... its toxicity to fish, making it more harmful. "The ... the long term because the dispersed oil is diluted and ... term, they increase the bioavailability and toxicity of the fuel ...
... Society (ACS) Weekly PressPac from the Office ... ACS, 34 peer-reviewed journals and Chemical ... journal or the American Chemical Society as ... Archive: http://portal.acs.org/portal/acs/corg/content?_nfpb=true&_pageLabel=PP_ARTICLEMAIN&node_id=223&content_id=CTP_006742&use_sec=true&sec_url_var=region1 ARTICLE #1 ...
... dinosaurs met their death on the muddy margins of a ... of Chinese and American paleontologists that excavated the site in ... sudden death of the herd in a mud trap provides ... of a single species of ornithomimid dinosaur ( Sinornithomimus dongi ...
Cached Biology News:American Chemical Society's weekly PressPac -- March 11, 2009 2American Chemical Society's weekly PressPac -- March 11, 2009 3American Chemical Society's weekly PressPac -- March 11, 2009 4American Chemical Society's weekly PressPac -- March 11, 2009 5American Chemical Society's weekly PressPac -- March 11, 2009 6Young dinosaurs roamed together, died together 2Young dinosaurs roamed together, died together 3
... or Isolated Sequence) siRNA Test System is ... evaluation of a potential of any DNA ... for RNA interference (RNAi). Current computer-based RNAi ... the probability of selected sequence to be ...
Glycerol-based mounting medium for immunofluorescence microscopy. Formulated to retard photobleaching of fluorochromes such as fluorescein and rhodamine. Product can also be used as a diluent for fl...
Anti-Phospho-JKK/SEK1/MKK4 pAb Description: 100 g rabbit polyclonal antibody. Reacts with human/mouse/rat. Tested in WB. Research Focus: signal transduction Storage: -20C Shipping Tem...
... formulated for covering tissue sections and cell preparations immunohistochemically stained ... , ... Application: Vision Mount ... that require an aqueous mounting medium, or those that do ...
Biology Products: