Europhysics letters, 2012-11, Vol.100 (4), p.45001
2012
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Details
- Autor(en) / Beteiligte
- Titel
- Strong and collimated terahertz radiation by super-Gaussian lasers
- Ist Teil von
- Europhysics letters, 2012-11, Vol.100 (4), p.45001
- Ort / Verlag
- EDP Sciences, IOP Publishing and Società Italiana di Fisica
- Erscheinungsjahr
- 2012
- Quelle
- Alma/SFX Local Collection
- Beschreibungen/Notizen
- We propose two super-Gaussian laser beams with frequency difference for obtaining more collimated terahertz (THz) radiation at a desired position based on their order/index and for enhancing the efficiency of the scheme by realizing stronger transient transverse current due to the spatial variation of their fields. For the laser intensity of ∼1014 W cm2 and along with the application of a periodic density structure, a resonant excitation of the THz radiation is achieved together with the efficiency of scheme as ∼0.006.