Кремниевая оптика для фокусировки лазерного излучения терагерцового диапазона в заданные двумерные области

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 µm. The preliminary experiments have demonstrated feasibility of application of binary silicon DOE for focusing of terahertz radiation into pre-given focal domain. esearcher of the Image Processing Systems Institute of the RAS