Abstract
Terahertz (THz) radiation from the interaction of ultrashort laser pulses with gases is studied both theoretically and experimentally. We theoretically study the THz generation based on transient ionization current model and give the relation between the final THz field and the initial transient ionization current. Recent experimental results on optimization of THz radiation in laser air interaction are also shown. We find by use of a simple aperture to change the laser field distribution, the terahertz wave amplitudes can be enhanced by more than eight times than those of aperture-free cases. We use two dimensional particle-in-cell codes to simulate the experiments and give possible explanations.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
