This title appears in the Scientific Report :
2014
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevA.90.023808 in citations.
Please use the identifier: http://hdl.handle.net/2128/8068 in citations.
Strong, tunable terahertz emission by two-color picosecond laser irradiation
Strong, tunable terahertz emission by two-color picosecond laser irradiation
It is shown by particle-in-cell simulations that powerful terahertz (THz) radiation can be generated by picosecond (ps) laser pulses below 10(14) W/cm(2) via a two-color laser scheme. At such laser intensities, increasing the laser duration can result in significant enhancement in THz intensities. F...
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Personal Name(s): | Wang, W.-M. (Corresponding Author) |
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Gibbon, P. / Sheng, Z.-M. / Li, Y.-T. | |
Contributing Institute: |
Jülich Supercomputing Center; JSC |
Published in: | Physical Review A Physical review / A, 90 90 (2014 2014) 2 2, S. 023808 023808 |
Imprint: |
College Park, Md.
APS
2014
2014-08-07 2014-08-01 |
DOI: |
10.1103/PhysRevA.90.023808 |
Document Type: |
Journal Article |
Research Program: |
Computational Science and Mathematical Methods |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/8068 in citations.
It is shown by particle-in-cell simulations that powerful terahertz (THz) radiation can be generated by picosecond (ps) laser pulses below 10(14) W/cm(2) via a two-color laser scheme. At such laser intensities, increasing the laser duration can result in significant enhancement in THz intensities. From 0.03 ps to 0.9 ps the enhancement climbs to nearly 40x before saturating until 2 ps. This demonstrates that low intensity, readily available ps laser technology could be utilized for driving powerful THz sources. By contrast, for laser intensities high enough to completely ionize the gas medium, it is found that the THz emission decreases with increasing pulse duration: optimal conversion is found for few-femtosecond drivers. |