Featured Research

from universities, journals, and other organizations

Physicists Develop Laser With Bandwith Spanning Two Telecom Windows

Date:
May 20, 2008
Source:
City College of New York
Summary:
Physicists have developed new near-infrared broadband laser materials with tunability ranges around triple those of earlier crystals. The new crystals have a tunability range of as much as 460 nanometers (nm) and have potential application in such fields as telecommunications, biomedical imaging and remote sensing.

A team of physicists in the Institute for Ultrafast Spectroscopy and Lasers (IUSL) of the Physics Department at The City College of New York (CCNY) have developed new near-infrared broadband laser materials with tunability ranges around triple those of earlier crystals. The new crystals have a tunability range of as much as 460 nanometers (nm) and have potential application in such fields as telecommunications, biomedical imaging and remote sensing.

Related Articles


“For the first time tunable laser operation was achieved at both the 1.33 μm (microns) and 1.55 μm telecommunication windows from a single optical center in trivalent chromium (Cr3+) doped LiInSiO4 (lithium iridium silicate) (Cr3+:LISO) and LiInGeO4 (lithium iridium germanate) (Cr3+:LIGO) single crystals,” said Dr. Robert R. Alfano, Distinguished Professor of Science and Engineering and Director of IUSL.

The crystals have the widest bandwidth and the most near-infrared shifted wavelength range for laser operation ever demonstrated for the Cr3+ ion, noted Professor Alfano, who earlier this month was awarded The Optical Society of America’s Charles Hard Townes Award for his discovery of and work on the supercontinuum.

The Cr3+:LISO crystal was tunable in the 1,160 nm to 1,620 nm range; the Cr3+:LIGO crystal was tunable in the 1,150 to 1,600 nm range. Fosterite and Cunyite, earlier crystals developed at CCNY, have bandwidths of 165 nm (1,173 nm to 1,338 nm) and 144 nm (1,348 nm to 1,482 nm), respectively.

Because of their strong optical absorption in the range of laser diode pump sources and quantum efficiency of 50 percent, the new materials have promise for use in miniature broadband laser devices for telecommunication industry, biomedical imaging, optical coherence tomography, laser spectroscopy, ultrafast pulse generation and remote sensing, he added.

In addition to Professor Alfano, the research team included: Dr. Alexei Bykov, Senior Research Associate at IUSL; Dr. Mikhail Sharonov, Senior Research Associate at IUSL, and Dr. Vladimir Petricevic, Associate Professor of Physics at CCNY. The discovery was reported in the December 15 edition of Optics Letters.


Story Source:

The above story is based on materials provided by City College of New York. Note: Materials may be edited for content and length.


Cite This Page:

City College of New York. "Physicists Develop Laser With Bandwith Spanning Two Telecom Windows." ScienceDaily. ScienceDaily, 20 May 2008. <www.sciencedaily.com/releases/2008/05/080519113215.htm>.
City College of New York. (2008, May 20). Physicists Develop Laser With Bandwith Spanning Two Telecom Windows. ScienceDaily. Retrieved December 19, 2014 from www.sciencedaily.com/releases/2008/05/080519113215.htm
City College of New York. "Physicists Develop Laser With Bandwith Spanning Two Telecom Windows." ScienceDaily. www.sciencedaily.com/releases/2008/05/080519113215.htm (accessed December 19, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Friday, December 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Building Google Into Cars

Building Google Into Cars

Reuters - Business Video Online (Dec. 19, 2014) Google's next Android version could become the standard that'll power your vehicle's entertainment and navigation features, Reuters has learned. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
AP Review: Nikon D750 and GoPro Hero 4

AP Review: Nikon D750 and GoPro Hero 4

AP (Dec. 19, 2014) What to buy an experienced photographer or video shooter? There is some strong gear on the market from Nikon and GoPro. The AP's Ron Harris takes a closer look. (Dec. 19) Video provided by AP
Powered by NewsLook.com
Navy Unveils Robot Fish

Navy Unveils Robot Fish

Reuters - Light News Video Online (Dec. 18, 2014) The U.S. Navy unveils an underwater device that mimics the movement of a fish. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
3D Printed Cookies Just in Time for Christmas

3D Printed Cookies Just in Time for Christmas

Reuters - Innovations Video Online (Dec. 18, 2014) A tech company in Spain have combined technology with cuisine to develop the 'Foodini', a 3D printer designed to print the perfect cookie for Santa. Ben Gruber reports. Video provided by Reuters
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