Navigation Links
Scientists demonstrate laser with controlled polarization
Date:4/13/2009

Cambridge, Mass. April 13, 2009 Applied scientists at the Harvard School of Engineering and Applied Sciences (SEAS) in collaboration with researchers from Hamamatsu Photonics in Hamamatsu City, Japan, have demonstrated, for the first time, lasers in which the direction of oscillation of the emitted radiation, known as polarization, can be designed and controlled at will. The innovation opens the door to a wide range of applications in photonics and communications. Harvard University has filed a broad patent on the invention.

Spearheaded by graduate student Nanfang Yu and Federico Capasso, Robert L. Wallace Professor of Applied Physics and Vinton Hayes Senior Research Fellow in Electrical Engineering, both of SEAS, and by a team at Hamamatsu Photonics headed by Dr. Hirofumi Kan, General Manager of the Laser Group, the findings will be published as a cover feature of the April 13 issue of Applied Physics Letters.

"Polarization is one of the key features defining a laser beam. Controlling it represents an important new step towards beam engineering of lasers with unprecedented flexibility, tailored for specific applications," explains Capasso. "The novelty of our approach is that instead of being conducted externally, which requires bulky and expensive optical components, manipulation of the beam polarization is achieved by directly integrating the polarizer on the laser facet. This compact solution is applicable to semiconductor lasers and other solid-state lasers, all the way from communication wavelengths to the mid-infrared and Terahertz spectrum".

Light sources with a desirable polarization state are useful for a wide variety of applications. For example, satellite communications use two orthogonal polarizations to double the capacity of the channel; circularly-polarized light sources are necessary to detect certain biomolecules; and laser sources with a variety of polarization states have relevance for quantum cryptograph
'/>"/>

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

Page: 1 2

Related biology technology :

1. Gladstone scientists uncover potential mechanism of memory loss in Alzheimers disease
2. Three Studies by Independent Scientists Highlighting Pressure Cycling Technology (PCT) to be Presented this Week at the British Mass Spectrometry Societys 29th Annual Meeting
3. Social Network for Scientists Marks Ten Years Online
4. Scientists synthesize memory in yeast cells
5. Scientists synthesize memory in yeast cells
6. University of Leicester scientists discover technique to help friendly bacteria
7. Scientists discover how cancer may take hold
8. Yale scientists make 2 giant steps in advancement of quantum computing
9. New Scientists Boost Disease-based Research at Boston Biomedical Research Institute
10. Scientists say sabercat bit like a pussycat
11. New Corporate Website Launched - Focus on Life Scientists, Flow Cytometrists, & Clinicians
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Scientists demonstrate laser with controlled polarization
(Date:9/19/2014)... , September 19, 2014 ... 53rd European Society for Paediatric Endocrinology (ESPE) Meeting  ... science and medical research in the field of growth  ... KGaA, Darmstadt, Germany , today announced ... (GGI) for 2014. The awards were announced during a ...
(Date:9/18/2014)... , Sept. 18, 2014 About POCT ... is performed outside a clinical laboratory. It helps ... administrating appropriate treatments and medication. POCT is gaining ... of lifestyle diseases such as diabetes, heart disease, ... POCT devices are standardized to minimize errors during ...
(Date:9/18/2014)... 18, 2014 ... ) has announced the addition of ... Strategic Business Report" report to ... report analyzes the worldwide markets for ... the following Product Segments: Polymeric Materials, ...
(Date:9/18/2014)... 2014 Research and Markets ... N-acetylcysteine Industry Report 2014" report to their ... Report 2014 is a professional and in-depth study ... industry. The report provides a basic ... and industry chain structure. The N-acetylcysteine market analysis ...
Breaking Biology Technology:EMD Serono Awards Grant for Growth Innovation (GGI) for the First Time 2EMD Serono Awards Grant for Growth Innovation (GGI) for the First Time 3POCT Market in China 2014-2018 2Biocompatible Materials - Global Strategic Business Report 2014 2Biocompatible Materials - Global Strategic Business Report 2014 3Global N-acetylcysteine Industry Report 2014 2
... Aug. 30, 2011 Farmers in North Carolina will ... a partnership by Perdue AgriBusiness and Winston-Salem-based Technology Crops ... the crop looks identical to canola, but the oil ... applications, especially industrial uses.  Grown in trials in North ...
... Aug. 30, 2011 Amnis Corporation, a manufacturer of advanced ... acquired by EMD Millipore, the Life Science division of Merck ... and closing is expected to take place in the fourth ... disclosed. Amnis generated sales of USD 14 ...
... SANTA CLARA, Calif., Aug. 30, 2011 ProteinSimple today introduced ... Simple Western.  The Simple Western is a complete reinvention of ... protein research.  For the first time in 30 years, researchers ... analysis. The Western Blot was invented in ...
Cached Biology Technology:Perdue AgriBusiness and TCI Collaborate to Bring Profitable New Crop to North Carolina 2Perdue AgriBusiness and TCI Collaborate to Bring Profitable New Crop to North Carolina 3Perdue AgriBusiness and TCI Collaborate to Bring Profitable New Crop to North Carolina 4Amnis Acquired by EMD Millipore - Expands Growth Potential 2Amnis Acquired by EMD Millipore - Expands Growth Potential 3ProteinSimple Reinvents the Western Blot 2
(Date:9/18/2014)... spoken language is unique to humans. "The genetic changes ... human evolution to make this possible are largely unknown, ... have," says Wolfgang Enard, Professor of Anthropology and Human ... molecular biological basis of language Enard has now taken ... study, undertaken in collaboration with scientists at several universities, ...
(Date:9/18/2014)... Va.Sept. 18, 2014Many Americans across racial and ethnic ... greatest impact on their day-to-day life, more so ... hearing and speech (57% of African-Americans, 49% of ... Hispanics). When asked which disease or ailment is ... ranked first among African-Americans followed by AIDS/HIV. ...
(Date:9/18/2014)... cycles of carbon and nitrogen comprise all spheres ... environmental systems have caused imbalances and perturbations that ... (GHGs). Increased GHGs result in climate changes which ... oceans and the atmosphere. Understanding these feedback mechanisms ... of environmental science during the past three decades. ...
Breaking Biology News(10 mins):Language evolution: Quicker on the uptake 2Language evolution: Quicker on the uptake 3Americans rate losing eyesight as having greatest impact on their lives 2Americans rate losing eyesight as having greatest impact on their lives 3Greenhouse gas research enters a new era 2
... who can,t tolerate the side effects of cholesterol-lowering drugs ... study by researchers from the Intermountain Heart Institute at ... found that pitavastatin, a newer cholesterol-lowering drug, may reduce ... in up to 68 percent of patients with high ...
... amount of nitrogen into urban watersheds, diminishing both ... many studies documenting the impacts of nitrogen on ... of leaky sewer systemsuntil now., Aging sewer systems ... urban watersheds, diminishing both the quality of water ...
... journals will join John Wiley & Sons, Inc., a ... technical, medical, and scholarly research; professional development; and education, ... Wiley from other publishers or self-publication, and 14 new ... joining Wiley represent relationships with over 30 societies and ...
Cached Biology News:Researchers find alternative cholesterol-lowering drug for patients who can't tolerate statins 2Pittsburgh's leaky faucet: How aging sewers are impacting urban watersheds 266 titles join Wiley's journal portfolio in 2013 2
... This book is unique in that ... techniques currently used in the diagnosis ... virus-specific antibodies and clinical virus isolates. ... blotting and hybridization procedures, PCR for ...
...
... PCR Purification Kits provide rapid and efficient ... PCR products, and salts from PCR products ... provides two Binding Buffer options for ... can be performed in either single column ...
... TOPO PCR Cloning Kit offers the ... (>=95%) cloning of blunt-end PCR products ... kit includes the linearized and topoisomerase ... bench-top ligations without ligase (1). The ...
Biology Products: