Navigation Links
Scientists demonstrate multibeam, multi-functional lasers
Date:11/30/2009

Cambridge, Mass November 30, 2009 An international team of applied scientists from Harvard, Hamamatsu Photonics, and ETH Zrich have demonstrated compact, multibeam, and multi-wavelength lasers emitting in the invisible part of the light spectrum (infrared). By contrast, typical lasers emit a single light beam of a well-defined wavelength. The innovative multibeam lasers have potential use in applications related to remote chemical sensing pollution monitoring, optical wireless, and interferometry.

The research was led by postdoctoral researcher Nanfang Yu and Federico Capasso, Robert L. Wallace Professor of Applied Physics and Vinton Hayes Senior Research Fellow in Electrical Engineering, both at the Harvard School of Engineering and Applied Sciences (SEAS); Hirofumi Kan, General Manager of the Laser Group at Hamamatsu Photonics; and Jrme Faist, Professor at ETH Zrich. The findings appeared online in the October 23 issue of Applied Physics Letters and will appear as a December 7 cover story.

"We have demonstrated devices that can create highly directional laser beams pointing in different directions either at the same or at different wavelengths," says Capasso. "This could have major implications for parallel high-throughput monitoring of multiple chemicals in the atmosphere or on the ground and be used, for example, for studying hazardous trace gases and aerosols, monitoring greenhouse gases, detecting chemical agents on the battlefield, and mapping biomass levels in forests."

The more versatile laser is a descendant of the quantum cascade laser (QCL), invented and first demonstrated by Capasso, Faist, and their collaborators at Bell Labs in 1994. Commercially available QCLs, made by stacking ultra-thin atomic layers of semiconductor materials on top of one another, can be custom designed to emit a well -defined infrared wavelength for a specific application or be made to emit simultaneously multiple wavelengths. To achieve multiple beams, the researchers patterned the laser facet with metallic structures that behave as highly directional antennas and then beam the light in different directions.

"Having multibeam and multi-wavelength options will provide unprecedented flexibility. The ability to emit multiple wavelengths is ideal for generating a quantitative map of the concentration of multiple chemicals in the atmosphere," explains Kan. "Profiles of these atmospheric componentsas a function of altitude or locationare critically important for environmental monitoring, weather forecasting, and climate modeling."


'/>"/>

Contact: Michael Patrick Rutter
mrutter@seas.harvard.edu
617-496-3815
Harvard University
Source:Eurekalert  

Related biology technology :

1. Forensic Scientists at Kansas City Crime Lab Release Validation Report Confirming Zygems forensicGEM(R) Kit is a Reliable, Rapid Method for Extracting DNA From Saliva
2. Biomodels Scientists Report Development of a Novel Model for Cancer Treatment-Related Fatigue
3. Scientists develop novel method to generate functional hepatocytes for drug testing
4. Harvard scientists bend nanowires into 2-D and 3-D structures
5. Scientists use math modeling to predict unknown biological mechanism of regulation
6. Weed Scientists Take Steps to Protect Rare Orchid
7. Alzheimers Drug Discovery Foundation and the Lewy Body Dementia Association Invite Scientists to Apply for LBD Grant Award Program
8. Invasive Saltcedar Triggers Lively Debate among Weed Scientists and Land Managers
9. UK scientists developing intelligent harvesting robot to save farms up to 100,000 a year
10. NIST scientists study how to stack the deck for organic solar power
11. UCR scientists manipulate ripples in graphene, enabling strain-based graphene electronics
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Scientists demonstrate multibeam, multi-functional lasers
(Date:7/17/2017)... ... July 17, 2017 , ... Neurodevelopmental disorders ... range of overlapping clinical features. The advancement of targeted next-generation sequencing (NGS) has ... research and testing. , However, designing a custom panel for disease research ...
(Date:7/17/2017)... ... July 17, 2017 , ... Co-Diagnostics, Inc. ... and intends both to manufacture and sell reagents used for diagnostic tests, has ... , Headquartered in Sandy, Utah, Co-Diagnostics’ intellectual property and technologies are protected by ...
(Date:7/16/2017)... ... July 16, 2017 , ... ... instruments announced the launch of its new line of Rocking and Waving Shakers ... waving shaker models (both analog and digital) for laboratory applications in a variety ...
(Date:7/15/2017)... Staten Island, NY (PRWEB) , ... July 15, 2017 , ... ... field for over 5 years. During this time, the people at FFS have ... learning from their customers, engineers at FFS are able to launch new products to ...
Breaking Biology Technology:
(Date:4/18/2017)... , April 18, 2017  Socionext Inc., a global expert ... a media edge server, the M820, which features the company,s hybrid ... software provided by Tera Probe, Inc., will be showcased during the ... the NAB show at the Las Vegas ... ...
(Date:4/13/2017)... MONICA, Calif. , April 13, 2017 ... New York will feature emerging and evolving ... Summits. Both Innovation Summits will run alongside the expo ... of speaker sessions, panels and demonstrations focused on trending ... coast,s largest advanced design and manufacturing event will take ...
(Date:4/11/2017)... , April 11, 2017 Crossmatch®, a ... authentication solutions, today announced that it has been ... Research Projects Activity (IARPA) to develop next-generation Presentation ... "Innovation has been a driving force ... program will allow us to innovate and develop ...
Breaking Biology News(10 mins):