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Agafonov A.N.,Samara State Aerospace University | Volodkin B.O.,Samara State Aerospace University | Volotovsky S.G.,Samara State Aerospace University | Kaveev A.K.,Tydex | And 7 more authors.
Computer Optics | Year: 2013

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.

Bagraev N.T.,RAS Ioffe Physical - Technical Institute | Danilovskii E.Yu.,RAS Ioffe Physical - Technical Institute | Gets D.S.,RAS Ioffe Physical - Technical Institute | Kaveev A.K.,TYDEX | And 9 more authors.
Journal of Physics: Conference Series | Year: 2014

We present the first findings of the terahertz emission from the ultra-narrow p-type silicon quantum well confined by the δ-barriers heavily doped with boron on the n-type Si (100) surface. The THz spectra revealed by the voltage applied along the Si-QW plane appear to result from the radiation of the dipole boron centers. © Published under licence by IOP Publishing Ltd.

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