| Issue |
EPL
Volume 100, Number 4, November 2012
|
|
|---|---|---|
| Article Number | 45001 | |
| Number of page(s) | 5 | |
| Section | Physics of Gases, Plasmas and Electric Discharges | |
| DOI | https://doi.org/10.1209/0295-5075/100/45001 | |
| Published online | 29 November 2012 | |
Strong and collimated terahertz radiation by super-Gaussian lasers
Plasma Waves and Particle Acceleration Laboratory, Department of Physics, Indian Institute of Technology Delhi - New Delhi - 110 016, India
Received: 22 September 2012
Accepted: 1 November 2012
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.
PACS: 52.38.-r – Laser-plasma interactions / 52.40.Db – Electromagnetic (nonlaser) radiation interactions with plasma / 52.35.Hr – Electromagnetic waves (e.g., electron-cyclotron, Whistler, Bernstein, upper hybrid, lower hybrid)
© EPLA, 2012
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.