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RESEARCH AND TECHNOLOGY

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The research in this group investigates the science of atoms, molecules, and light. Fundamental questions we address include:
1) Atom interactions with ultraintense laser fields
2) Laser technology for high power, ultrafast lasers.

The interaction of atoms with laser intensities from 1017 W/cm2 to 1019 W/cm2 gives rise to very high-energy particles and radiation. The electrons ripped off the atom by ultra-intense lasers will have kinetic energies exceeding their rest mass. They will travel near the speed of light and have millions of electron volts of energy. The dynamics are relativistic and the physics is only now beginning to be understood.

Intense laser interactions and measurements of the fast dynamics for processes in atoms and molecules require lasers that can generate very short pulses of light with high peak intensities. This research laboratory is also involved in laser and optical technology development with some of the highest peak power lasers in the world. These efforts are aimed to meet the scientific demands for high repetition rate, high peak power, ultrashort pulse duration light sources with wavelengths between 300 eV and 0.5 eV. Recent advances in beam shaping technology allow amplification to the terawatt peak power level with a spatial beam profile better than what is available with many 5 milliwatt HeNe lasers.

The research in high intensity physics has significant overlap with commercial interests. These range from laser induced breakdown spectroscopy (LIBS) to high data rate communications in optical fibers. The two posters below relate to the broad application and role of lasers and optical technology in society.

 

 

 

 

 


Barry Walker

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Contact Info

Graduate or undergraduate students who would like to study the physics of atoms, molecular dynamics, or lasers should contact me about being involved with the research of this group. The career opportunities in these areas of physics are particularly good due to demand at the industrial level, for scientist with optical experience, and at the academic level for AMO physicists. Please contact me so that we can arrange to talk about some science and the possibility of your involvement in the group. Applicants will need a letter of recommendation and a copy of their transcript.


BARRY C WALKER
Univ of Delaware
Physics & Astronomy
264 Sharp Lab
Newark, DE 19716

Professor
bcwalker@udel.edu
office 302-831-2673
lab 302-831-6542
cell 302-740-0257
fax 302-831-1637