AI Article Synopsis
- * The terahertz radiation was analyzed for its spectrum, polarization, and energy, demonstrating significant energy production (over 4 mJ) at frequencies below 10 THz when using nitrogen as a target.
- * The radiation is thought to arise from plasma electrons accelerated by the laser's ponderomotive force and plasma wakefields, with further studies conducted through analytical calculations and simulations to explore the generation mechanism.
Article Abstract
High-power terahertz radiation was observed to be emitted from a gas jet irradiated by 100-terawatt-class laser pulses in the laser-wakefield acceleration of electrons. The emitted terahertz radiation was characterized in terms of its spectrum, polarization, and energy dependence on the accompanying electron bunch energy and charge under various gas target conditions. With a nitrogen target, more than 4 mJ of energy was produced at <10 THz with a laser-to-terahertz conversion efficiency of ~0.15%. Such strong terahertz radiation is hypothesized to be produced from plasma electrons accelerated by the ponderomotive force of the laser and the plasma wakefields on the time scale of the laser pulse duration and plasma period. This model is examined with analytic calculations and particle-in-cell simulations to better understand the generation mechanism of high-energy terahertz radiation in laser-wakefield acceleration.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9899771 | PMC |
| http://dx.doi.org/10.1038/s41377-022-01068-0 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!