The Novosibirsk Free Electron Laser - Unique Source of Terahertz and Infrared Coherent Radiation

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Abstract

The high-power free electron laser (FEL) facility NovoFEL has been created at Budker INP. Its wavelength can be tuned over a wide range in terahertz and infrared spectrum regions. This FEL uses a multi-turn energy recovery linac with five straight sections as a source of electron beam. Three sections are used for three FELs which operate in different wavelength ranges (the first at 90-240 μm; the second at 37 - 80 μm; the third at 5 - 20 μm). The first and second FELs were commissioned in 2003 and 2009, respectively. They operate for users now. The third FEL is installed on the fourth accelerator track, which is the last one; the electron energy is maximal here. This FEL comprises three undulator sections and a 40-m optical cavity. The first lasing of this FEL was obtained in the summer of 2015. The radiation wavelength was 9 μm and the average power was about 100 W. Radiation of the third FEL was delivered to the user stations, and the first user shifts were performed recently. The results of the commissioning of the third FEL, the current status of the first and second FELs and future development prospects are presented.

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Shevchenko, O. A., Arbuzov, V. S., Vinokurov, N. A., Vobly, P. D., Volkov, V. N., Getmanov, Y. V., … Scheglov, M. A. (2016). The Novosibirsk Free Electron Laser - Unique Source of Terahertz and Infrared Coherent Radiation. In Physics Procedia (Vol. 84, pp. 13–18). Elsevier B.V. https://doi.org/10.1016/j.phpro.2016.11.004

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