Featured Research

from universities, journals, and other organizations

UCSB Researchers Develop Hybrid Silicon Evanescent Laser

Date:
November 15, 2005
Source:
University of California - Santa Barbara
Summary:
In what promises to be an important advance, researchers at the University of California, Santa Barbara have developed a novel laser by bonding optical gain layers directly to a silicon laser cavity. This hybrid laser offers an alternative to silicon Raman lasers and is an order of magnitude shorter. The laser is optically pumped, operates in continuous wave mode, and only needs 30 mW of input pump power.

In what promises to be an important advance, researchers at the University of California, Santa Barbara have developed a novel laser by bonding optical gain layers directly to a silicon laser cavity. This hybrid laser offers an alternative to silicon Raman lasers and is an order of magnitude shorter. The laser is optically pumped, operates in continuous wave mode, and only needs 30 mW of input pump power.

This evanescent silicon laser demonstration is the first step toward an electrically pumped hybrid silicon laser. Increasingly, the performance of microelectronic systems will depend more on the connections between chips and devices than on the characteristics of the chips and devices themselves. As semiconductor systems get smaller, interconnect capacity and power dissipation will limit their performance. Optical interconnects could alleviate these limitations but the challenge has been to create a semiconductor laser that can be fully integrated with silicon microelectronics.

The laser developed by John Bowers and his students, Alex Fang and Hyundai Park, uses InAlGaAs quantum wells to provide optical amplification. "The ability to combine the best of both worlds (i.e. III-V gain material with silicon photonics) could lead to a new way of enabling highly integrated laser sources with intelligent opto-electronic devices for future optical communications at low cost," said John Bowers, professor of electrical and computer engineering at UCSB .

###

The research was published in Optics Express. The work was funded by DARPA and Intel Corporation.


Story Source:

The above story is based on materials provided by University of California - Santa Barbara. Note: Materials may be edited for content and length.


Cite This Page:

University of California - Santa Barbara. "UCSB Researchers Develop Hybrid Silicon Evanescent Laser." ScienceDaily. ScienceDaily, 15 November 2005. <www.sciencedaily.com/releases/2005/11/051115173030.htm>.
University of California - Santa Barbara. (2005, November 15). UCSB Researchers Develop Hybrid Silicon Evanescent Laser. ScienceDaily. Retrieved September 30, 2014 from www.sciencedaily.com/releases/2005/11/051115173030.htm
University of California - Santa Barbara. "UCSB Researchers Develop Hybrid Silicon Evanescent Laser." ScienceDaily. www.sciencedaily.com/releases/2005/11/051115173030.htm (accessed September 30, 2014).

Share This



More Matter & Energy News

Tuesday, September 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Do Video Games Trump Brain Training For Cognitive Boosts?

Do Video Games Trump Brain Training For Cognitive Boosts?

Newsy (Sep. 29, 2014) More and more studies are showing positive benefits to playing video games, but the jury is still out on brain training programs. Video provided by Newsy
Powered by NewsLook.com
CERN Celebrates 60 Years of Science

CERN Celebrates 60 Years of Science

Reuters - Business Video Online (Sep. 29, 2014) CERN, the European Organisation for Nuclear Research, celebrates 60 years of bringing nations together through science. As Joanna Partridge reports from inside the famous science centre it's also planning to turn the Large Hadron Collider particle accelerator back on after an upgrade. Video provided by Reuters
Powered by NewsLook.com
This 'Invisibility Cloak' Is Simpler Than Most

This 'Invisibility Cloak' Is Simpler Than Most

Newsy (Sep. 28, 2014) Researchers from the University of Rochester have created a type of invisibility cloak with simple focal lenses. Video provided by Newsy
Powered by NewsLook.com
New Corvette Can Secretly Record Convos And Get You Arrested

New Corvette Can Secretly Record Convos And Get You Arrested

Newsy (Sep. 28, 2014) The 2015 Corvette features valet mode – which allows the owner to secretly record audio and video – but in many states that practice is illegal. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins