Silicon optics for focusing of terahertz laser radiation in a given two-dimensional domain
A.N. Agafonov, B.O. Volodkin, S.G. Volotovsky, A.K. Kaveev, B.A. Knyazev, G.I. Kropotov, K.N. Tykmakov, V.S. Pavelyev, E.V. Tsygankova, D.I. Tsypishka, Yu.Yu. Choporova

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Full text of article: Russian language.

DOI: 10.18287/0134-2452-2013-37-4-464-470

Pages: 464-470.

Abstract:
Binary silicon-based diffractive optical element (DOE) - Gaussian-to-Square focuser (diameter of aperture is 30 mm) for the terahertz spectral range has been designed and characterized using terahertz radiation of the Novosibirsk Free Electron Laser (NovoFEL) at the wavelength of 141 mm. The preliminary experiments have demonstrated feasibility of application of binary silicon DOE for focusing of terahertz radiation into pre-given focal domain.

Key words:
diffractive optical element, free electron laser, terahertz radiation.

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