Navigation Links
New technique measures ultrashort laser pulses at focus
Date:5/9/2008

Lasers that emit ultrashort pulses of light are used for numerous applications including micromachining, microscopy, laser eye surgery, spectroscopy and controlling chemical reactions. But the quality of the results is limited by distortions caused by lenses and other optical components that are part of the experimental instrumentation.

To better understand the distortions, researchers at the Georgia Institute of Technology developed the first device to directly measure complex ultrashort light pulses in space and time at and near the focus. Measuring the pulse at the focus is important because thats where the beam is most intense and where researchers typically utilize it. Knowing how the light is distorted allows researchers to correct for the aberrations by changing a lens or using a pulse shaper or compressor to manipulate the pulse into the desired form.

Researchers have always measured the pulse immediately as it exited the laser, so they didnt realize the extent to which the pulse became distorted by the time it reached the focus after traveling through the optics and lenses in the system, said Rick Trebino, a professor in the Georgia Institute of Technologys School of Physics and Georgia Research Alliance Eminent Scholar in Ultrafast Optical Physics.

The device was described in a presentation at the Conference on Lasers and Electro-Optics on May 8. This research was funded by the National Science Foundation and published in the August 2007 issue of the journal Optics Express.

It is difficult to measure ultrashort pulses because they typically last between a few femtoseconds and a picosecond, which are 10-15 and 10-12 of a second, and faster than the response time of the fastest electronics.

The light comes out as a train of extremely short bursts. The laser crams all of the energy of a continuous laser into a few femtoseconds, which creates really intense laser pulses, said Pam Bowla
'/>"/>

Contact: Abby Vogel
avogel@gatech.edu
404-385-3364
Georgia Institute of Technology Research News
Source:Eurekalert  

0

GOOD

Page: 1 2 3

Related biology technology :

1. White Paper Details New Techniques for Isolating, Identifying Anaerobic Bacteria and Organisms
2. Assembly technique for tiny wires may eventually help detect cancer and other diseases
3. Unique infrared technique finds applications in nanoscience
4. DNA technique yields 3-D crystalline organization of nanoparticles
5. Cardica and Intuitive Surgical to Host Educational Symposium on Advanced Techniques and Technologies in Robotic Coronary Revascularization and Mitral Valve Repair
6. Doping technique brings nanomechanical devices into the semiconductor world
7. Glycominds Joins Biomolecular Photonic (BMP) Consortium to Develop New Molecular Imaging Technique
8. University of Leicester scientists discover technique to help friendly bacteria
9. New technique can be breakthrough for early cancer diagnosis
10. NIH Announces Advanced Cell Technologys Single Cell Embryo Biopsy Technique as a Means to Derive Embryonic Stem Cells to be Considered for Federal Funding
11. New DNA-based technique for assembly of nano- and micro-sized particles
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New technique measures ultrashort laser pulses at focus
(Date:5/24/2013)... BOSTON and TEL AVIV, Israel ... ("InspireMD" or the "Company") (NYSE MKT: NSPR), a leader in ... , the Company,s President and Chief Executive Officer, and ... will participate in the Benchmark Company, LLC One-on-One Investor Conference ... East Wisconsin Ave., Milwaukee, WI. ...
(Date:5/24/2013)... May 24, 2013 Many factors impact ... uptake or efflux transporters at the blood-tissue barrier. Even ... to unbound fractions in the tissue rather than the ... disposition challenges is required to guide lead optimization, predict ... any species-dependent variables that may impact the likely human ...
(Date:5/24/2013)... 2013 Quincy Bioscience, a leading ... of calcium-binding proteins to support healthy living, is ... study of apoaequorin in Food and ... the British Industrial Biological Research Association. , ... potential adverse effects, if any, of apoaequorin, in ...
(Date:5/23/2013)... 2013 Venaxis, Inc. (Nasdaq:   APPY), an ... FDA clearance and commercializing its rapid, protein biomarker-based appendicitis ... an underwritten public offering of 10,000,000 shares of its ... of its common stock at an exercise price of ... of $1.25 per share and related warrant.  Venaxis has ...
Breaking Biology Technology:InspireMD To Participate In Benchmark Investor Conference On May 30th 2InspireMD To Participate In Benchmark Investor Conference On May 30th 3InspireMD To Participate In Benchmark Investor Conference On May 30th 4DMPK for Targeted Tissue Delivery: Solutions for the Most Challenging Part of Outsourcing, New Life Science Webinar Hosted by Xtalks 2Safety Assessment Study of Apoaequorin Published in Food and Chemical Toxicology 2Venaxis Announces Pricing of Offering of Common Stock and Warrants 2Venaxis Announces Pricing of Offering of Common Stock and Warrants 3
... 19 BioCryst,Pharmaceuticals, Inc. (Nasdaq: BCRX ... II study with intramuscular (i.m.) injection of ... of seasonal and,life-threatening influenza. (Logo: ... a randomized, double-blind, placebo-controlled clinical,trial designed to ...
... 19 Health and Human,Services Secretary Mike ... the goal of personalized health care and ... and health care delivery should be,aligned to ... time" for each,individual patient., The report, ...
... Life,Sciences, Inc. (Nasdaq: CALP ) today announced that ... New York City will be webcast on,Tuesday, September 25 ... Caliper, will be providing an update on the company,s ... http://www.caliperls.com and clicking on the,link for the ...
Cached Biology Technology:BioCryst Reports Preliminary Results From a Phase II Clinical Trial of Peramivir in Subjects With Acute Influenza 2BioCryst Reports Preliminary Results From a Phase II Clinical Trial of Peramivir in Subjects With Acute Influenza 3BioCryst Reports Preliminary Results From a Phase II Clinical Trial of Peramivir in Subjects With Acute Influenza 4BioCryst Reports Preliminary Results From a Phase II Clinical Trial of Peramivir in Subjects With Acute Influenza 5BioCryst Reports Preliminary Results From a Phase II Clinical Trial of Peramivir in Subjects With Acute Influenza 6BioCryst Reports Preliminary Results From a Phase II Clinical Trial of Peramivir in Subjects With Acute Influenza 7HHS Issues First Department-Wide Report on Personalized Health Care 2HHS Issues First Department-Wide Report on Personalized Health Care 3
(Date:5/23/2013)... Rollins School of Public Health at Emory University, ... Technology, have received a $4 million grant over ... Emory University (Health and Exposome Research Center: Understanding ... center grant awarded in the United States. ... National Institute of Environmental Health Sciences (NIEHS) of ...
(Date:5/23/2013)... for the overall health, development, and academic success ... in ensuring that all students have opportunities to ... of vigorous or moderate-intensity physical activity, says a ... Recent estimates suggest that only about half of ... better health and development. The report recommends ...
(Date:5/23/2013)... treating cerebral palsy with autologous cord blood. Following a ... old boy had been in a persistent vegetative state ... after treatment with the cord blood containing stem cells, ... child learned to speak simple sentences and to move. ... dispel the long-held doubts about the effectiveness of the ...
Breaking Biology News(10 mins):Emory, Georgia Tech receive first human exposome center grant in US 2Emory, Georgia Tech receive first human exposome center grant in US 3Schools should provide opportunities for 60 minutes of daily physical activity to all students 2Schools should provide opportunities for 60 minutes of daily physical activity to all students 3First successful treatment of pediatric cerebral palsy with autologous cord blood 2
... release is available in Spanish . , Adolescents ... condition and regular physical activity present increased levels of insulin ... diabetes, appetite control and energy expenditure. This was the conclusion ... Physiology of the University of Granada . Further, after ...
... increasingly common and effective for operating inside the human ... tools inserted into the body of the patient, the ... determining the success of the operation. A team of ... a $2.3 million federal grant to develop a touch-sensitive ...
... next generation sequencing (NGS) and Certified Service Provider for ... a leading company in complex analysis and interpretation of ... complete human exome array, based on Roche NimbleGen sequence ... comprehensive service for human exome capture, targeted re-sequencing and ...
Cached Biology News:Children in good shape have better appetite control and energy expenditure 2Designing touch-sensitive virtual reality tools to train and test tomorrow's surgeons 2Designing touch-sensitive virtual reality tools to train and test tomorrow's surgeons 3Eurofins MWG Operon and Genomatix developed most complete human exome array 2
...
Collected from 8-12 week-old New Zealand or Californian rabbits....
Sterile concentration of Dithiothreitol (DTT) solution in phosphate buffer (pH 7.0). Dilute contents in one vial (10- fold) to 100 ml. For use in liquefying sputum samples....
Silica bead method is an economic method of DNA extraction from agarose...
Biology Products: