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Tests of Cryogenic Fabry–Perot Cavity with Mirrors on Different Substrates

Tests of Cryogenic Fabry–Perot Cavity with Mirrors on Different Substrates

Experiments were performed with Fabry-Perot optical resonators in vacuum at low temperatures. Mirrors were applied on substrates of various optical materials. The infrared laser with a wavelength of 1.064 microns was used. The pump power at the maximum could reach 450 mW. The evolution of the optical properties of the …