First high peak and average power single-pass THz free-electron laser in operation

Krasilnikov M, Aboulbanine Z, Adhikari G, Aftab N, Asoyan A, Boonpornprasert P, Davtyan H, Georgiev G, Good J, Grebinyk A, Gross M, Hoffmann A, Kongmon E, Li X, Lueangaramwong A, Melkumyan D, Mohanty S, Niemczyk R, Oppelt A, Qian H, Richard C, Stephan F, Vashchenko G, Weilbach T, Zhang X, Tischer M, Schneidmiller E, Vagin P, Yurkov M, Zapolnova E, Hillert W, Rossbach J, Brachmann A, Holtkamp N & Nuhn HD
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Krasilnikov, M., Aboulbanine, Z., Adhikari, G., Aftab, N., Asoyan, A., Boonpornprasert, P., … Nuhn, H. D. (2025). First high peak and average power single-pass THz free-electron laser in operation. Physical Review Accelerators and Beams, 28(3), 030701 (9 pp.). https://doi.org/10.1103/PhysRevAccelBeams.28.030701
https://www.dora.lib4ri.ch/psi/islandora/object/psi:69289

We report on the operation of the first high peak and average power single-pass terahertz free-electron laser (THz FEL) based on a high-brightness photoinjector for developing a THz source for pump-probe experiments at advanced x-ray FELs (XFELs). Electron beams with 17 MeV/c momentum and charge up to 2.4 nC were used to generate narrow-band 3 THz radiation with pulse energies of more than 0.1 mJ. The novelty of the realized method is that the undulator radiation by electron beams is much longer than the radiation wavelength, with FEL starting from coherent beam contribution rather than shot noise. This proved to be not a simple scaling of the XFEL mechanism due to the significant role of the bunching factor in the considered case.

Details
Publication Type

Journal Article

Title

First high peak and average power single-pass THz free-electron laser in operation

Author(s)

Krasilnikov, Mikhail

Aboulbanine, Zakaria

Adhikari, Gowri

Aftab, Namra

Asoyan, Aida

Boonpornprasert, Prach

Davtyan, Hakob

Georgiev, Georgi

Good, James

Grebinyk, Anna

Gross, Matthias

Hoffmann, Andreas

Kongmon, Ekkachai

Li, Xiangkun

Lueangaramwong, Anusorn

Melkumyan, David

Mohanty, Sandeep

Niemczyk, Raffael

Oppelt, Anne

Qian, Houjun

Richard, Christopher

Stephan, Frank

Vashchenko, Grygorii

Weilbach, Tobias (8113 Operation PROSCAN)

Zhang, Xiaoyang

Tischer, Markus

Schneidmiller, Evgeny

Vagin, Pavel

Yurkov, Mikhail

Zapolnova, Ekaterina

Hillert, Wolfgang

Rossbach, Jörg

Brachmann, Axel

Holtkamp, Norbert

Nuhn, Heinz Dieter

Journal

Physical Review Accelerators and Beams

Volume

28

Issue

3

Start Page

030701 (9 pp.)

Publication Year

2025

Peer Review

Yes

Collection

PSI Publications
Open Access

Additional Information

#present_address: Weilbach