Silicon and Diamond Diffractive Lenses with Continuous Profile for Focusing High-Power Terahertz Radiation

14 Jul 2020, 18:20
20m
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Oral THz radiation aplication THz radiation aplication

Speaker

Maxim Komlenok (Prokhorov General Physics Institute of the Russian Academy of Sciences)

Description

An increase in the radiation power of THz sources creates the need for the development of new optics operating with it. Here, we propose and realize the fabrication of silicon and diamond diffractive lenses with a continuous profile by the method of direct and indirect laser ablation, respectively. The fabricated lenses were tested with a free-electron laser at the wavelength of 141 µm and demonstrated high diffraction efficiency and a good agreement with the theoretical prediction. The work was supported by RFBR grant 18-32-20226

Primary authors

Maxim Komlenok (Prokhorov General Physics Institute of the Russian Academy of Sciences) Dr Taras Kononenko (Prokhorov General Physics Institute of the Russian Academy of Sciences) Prof. Boris Knyazev Prof. Vladimir Pavelyev Dr Dmitry Sovyk (Prokhorov General Physics Institute of the Russian Academy of Sciences) Prof. Gennadii Komandin (Prokhorov General Physics Institute of the Russian Academy of Sciences) Prof. Vitaly Konov (Prokhorov General Physics Institute of the Russian Academy of Sciences)

Presentation Materials