arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1004.1709physics.acc-ph
收藏

工作在超辐射区的台式可调谐太赫兹自由电子激光的数值模拟

Numerical modeling of a table-top tunable Smith-Purcell Terahertz free-electron laser operating in the super-radiant regime

C. Prokop, P. Piot, M. -C. Lin, P. Stoltz

摘要:

太赫兹(THz)辐射占据了电磁波谱的很大一部分,并且由于其能够深入渗透到许多有机材料中而没有与电离辐射(例如X射线)相关联的损伤的能力而引起了最近的兴趣。产生大量可调谐窄带THz辐射的一种途径是基于Smith-Purcell自由电子激光(SPFEL)效应。在这封信中,我们提出了一个简单的概念,一个紧凑的两级可调谐SPFEL工作在超辐射制度能够辐射在光栅的基本聚束频率。我们证明了它的能力和性能,通过计算机模拟使用共形时域有限差分电磁求解器{ \sc vorpal}。

英文摘要:

Terahertz (THz) radiation occupies a very large portion of the electromagnetic spectrum and has generated much recent interest due to its ability to penetrate deep into many organic materials without the damage associated with ionizing radiation such as x-rays. One path for generating copious amount of tunable narrow-band THz radiation is based on the Smith-Purcell free-electron laser (SPFEL) effect. In this Letter we propose a simple concept for a compact two-stage tunable SPFEL operating in the superradiant regime capable of radiating at the grating's fundamental bunching frequency. We demonstrate its capabilities and performances via computer simulation using the conformal finite-difference time-domain electromagnetic solver {\sc vorpal}.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑