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Article

Two-Color TeraHertz Radiation by a Multi-Pass FEL Oscillator

1
Dipartimento di Fisica, Universitá degli Studi di Milano, Via Celoria 16, 20133 Milano, Italy
2
INFN-Sezione di Milano, Via Celoria 16, 20133 Milano, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Giuseppe Dattoli
Appl. Sci. 2021, 11(14), 6495; https://doi.org/10.3390/app11146495
Received: 31 May 2021 / Revised: 28 June 2021 / Accepted: 8 July 2021 / Published: 14 July 2021
In this paper, we show that an electron beam produced by a super-conducting linac, driven in a sequence of two undulator modules of different periods, can generate two-color Terahertz radiation with wavelengths ranging from 100 μm to 2 μm. The generated pulses are synchronized, both MW-class, and highly coherent. Their specific properties and generation will be discussed in detail. Besides the single-spike pulse structure, usually observed in oscillators, we show that both the THz pump and probe can be modulated in a coherent comb of pulses, enabling periodic excitation and stroboscopic measurements. View Full-Text
Keywords: two-color; TeraHertz radiation; Free-Electron Laser Oscillators two-color; TeraHertz radiation; Free-Electron Laser Oscillators
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MDPI and ACS Style

Opromolla, M.; Petrillo, V. Two-Color TeraHertz Radiation by a Multi-Pass FEL Oscillator. Appl. Sci. 2021, 11, 6495. https://doi.org/10.3390/app11146495

AMA Style

Opromolla M, Petrillo V. Two-Color TeraHertz Radiation by a Multi-Pass FEL Oscillator. Applied Sciences. 2021; 11(14):6495. https://doi.org/10.3390/app11146495

Chicago/Turabian Style

Opromolla, Michele, and Vittoria Petrillo. 2021. "Two-Color TeraHertz Radiation by a Multi-Pass FEL Oscillator" Applied Sciences 11, no. 14: 6495. https://doi.org/10.3390/app11146495

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