Navigation Links
World's smallest semiconductor laser created by University of Texas scientists
Date:7/26/2012

AUSTIN, Texas Physicists at The University of Texas at Austin, in collaboration with colleagues in Taiwan and China, have developed the world's smallest semiconductor laser, a breakthrough for emerging photonic technology with applications from computing to medicine.

The scientists report their efforts in this week's Science.

Miniaturization of semiconductor lasers is key for the development of faster, smaller and lower energy photon-based technologies, such as ultrafast computer chips; highly sensitive biosensors for detecting, treating and studying disease; and next-generation communication technologies.

Such photonic devices could use nanolasers to generate optical signals and transmit information, and have the potential to replace electronic circuits. But the size and performance of photonic devices have been restricted by what's known as the three-dimensional optical diffraction limit.

"We have developed a nanolaser device that operates well below the 3-D diffraction limit," said Chih-Kang "Ken" Shih, professor of physics at The University of Texas at Austin. "We believe our research could have a large impact on nanoscale technologies."

In the current paper, Shih and his colleagues report the first operation of a continuous-wave, low-threshold laser below the 3-D diffraction limit. When fired, the nanolaser emits a green light. The laser is too small to be visible to the naked eye.

The device is constructed of a gallium nitride nanorod that is partially filled with indium gallium nitride. Both alloys are semiconductors used commonly in LEDs. The nanorod is placed on top of a thin insulating layer of silicon that in turn covers a layer of silver film that is smooth at the atomic level.

It's a material that the Shih lab has been perfecting for more than 15 years. That "atomic smoothness" is key to building photonic devices that don't scatter and lose plasmons, which are waves of electrons that can be used to move large amounts of data.

"Atomically smooth plasmonic structures are highly desirable building blocks for applications with low loss of data," said Shih.

Nanolasers such as this could provide for the development of chips where all processes are contained on the chip, so-called "on-chip" communication systems. This would prevent heat gains and information loss typically associated with electronic devices that pass data between multiple chips.

"Size mismatches between electronics and photonics have been a huge barrier to realize on-chip optical communications and computing systems," said Shangjr Gwo, professor at National Tsing Hua University in Taiwain and a former doctoral student of Shih's.


'/>"/>

Contact: Lee Clippard
clippard@austin.utexas.edu
512-232-0675
University of Texas at Austin
Source:Eurekalert  

Related biology technology :

1. Researchers develop one of the worlds smallest electronic circuits
2. The smallest conceivable switch
3. The worlds smallest steam engine
4. The worlds smallest magnetic data storage unit
5. Cooling semiconductor by laser light
6. Life Technologies to Accelerate Development of Ion Torrent Semiconductor Technology for Proteomic Applications in Research, Applied and Clinical Markets
7. Eye Surgery Center of Michigan First in Southeast Michigan to Perform Bladeless Cataract Surgery Using New LenSx® Laser Technology
8. New method for enhancing thermal conductivity could cool computer chips, lasers and other devices
9. Research could improve laser-manufacturing technique
10. New laser can point the way to new energy harvesting
11. Metamaterials may advance with new femtosecond laser technique
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
World's smallest semiconductor laser created by University of Texas scientists
(Date:2/21/2017)... ... February 21, 2017 , ... Creation Technologies, a private company ... equipment manufacturers (OEMs) , today announced it has received the ‘Highest Overall Customer ... in its category of electronics manufacturing services (EMS) providers with annual revenues over ...
(Date:2/21/2017)... , Feb. 21, 2017  Lexus, a returning partner of the ... the official and exclusive automobile partner of the men,s and women,s ... The 2017 Amgen Tour of California ... feature some of the best professional cycling teams in the world ... 14-20. The four-day Amgen Breakaway from Heart Disease TM ...
(Date:2/21/2017)... Scientists From Two Companies to ... Industry  ... STEER, creator of advanced materials platform technologies ... of plastics, pharmaceuticals, food and nutraceuticals, biomaterials and biorefining, today ... & technology company, on creating co-rotating twin screw extruder ...
(Date:2/21/2017)... Feb 21, 2017 Research and Markets has ... Analysis & Trends - Industry Forecast to 2025" report to ... ... a CAGR of around 12.8% over the next decade to reach ... analyzes the market estimates and forecasts for all the given segments ...
Breaking Biology Technology:
(Date:2/21/2017)... LONDON , February 21, 2017 ... um 70 Millionen US-Dollar wachsen. Nach einem Gespräch mit mehr ... es einige Hindernisse zu überwinden gilt, um diese Prognose ... ... unter anderem die Mobilisierung der finanziellen Mittel für die ...
(Date:2/10/2017)... DUBLIN , Feb 10, 2017 ... PharmaBiotech,s new report "Personalized Medicine - Scientific and Commercial ... ... in personalized medicine. Diagnosis is integrated with therapy for selection ... emphasis on early detection and prevention of disease in modern ...
(Date:2/8/2017)... , Feb. 7, 2017 The ... largely by the confluence of organizations, desires to ... for knowledge-based systems (password and challenge questions), biometrics ... and government systems. The market is driven by ... demarcation between consumer and enterprise uses cases, with ...
Breaking Biology News(10 mins):