Characterization of the terbium-doped calcium fluoride single crystal

Optical, thermo-optical and magneto-optical characteristics of the terbium-doped (10 at.%) calcium fluoride sample were investigated. It was made the analysis, confirmed the possibility of development of a Faraday isolator and a cryogenic Faraday isolator based on the studied medium, which will provide more than 30 dB isolation ratio of laser radiation in the “eye-safe” wavelength range (1530-1620 nm) at the 5 and 20 kW power, respectively.