Experimental Demonstration of Frequency-Chirped Density Modulation in the Laser Pulse for Advanced THz Radiation Sources
Journal of Infrared, Millimeter, and Terahertz Waves, ISSN: 1866-6906, Vol: 43, Issue: 1-2, Page: 181-194
2022
- 2Citations
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Article Description
Periodically modulated laser pulses have been widely used in electron accelerators to generate coherent terahertz (THz) radiation. Researches show that frequency-chirped microbunching in an electron beam can be achieved by interacting with intensity modulated laser pulses of chirped frequency. Such microbunched electron beam can be utilized for the chirp control and ultra-short pulse emission of THz radiation sources. In this paper, we experimentally demonstrate a method to generate such a frequency-chirped intensity modulation in the laser pulse. The central modulation frequency and chirp rate can be easily adjusted in a wide range. By using the obtained laser pulse as interaction seed source, the generation of desired electron beams is discussed briefly. The usage of such density modulated electron beam for ultra-short THz generation is also simulated numerically.
Bibliographic Details
Springer Science and Business Media LLC
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