THE OPTICAL CONSTANTS OF THE FILMS MgBaF4 IN THE RANGE OF 1.3…16 μm
Currently, work is underway to develop laser communication systems designed to operate in real atmospheric conditions, capable of transmitting information with high speed and stealth between ships. Their development requires finding ways to improve the moisture resistance and mechanical strength of optical antennas without compromising their optical transparency in a given wavelength range. It is impossible to solve this problem without studying the optical properties of films made of new promising materials in the required operating frequency range. It is known that BaF2 films, characterized by low refractive index in the infrared region of the spectrum, are now widely used in the production of optical structures. Their serious drawback is the low mechanical strength and moisture resistance. This paper presents the results of an experimental study of the optical properties of a new type is more moisture resistant and durable films MgBaF4 made of sintered under vacuum to a homogeneous composition of a mixture of MgF2 and BaF2.
Authors: E. N. Kotlikov, Yu. А. Novikova
Keywords: Optical films, infrared spectrum, absorption, transmission, reflection, barium fluoride films
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