Investigation of thermo-optical characteristics of magneto-active crystal Na(0.37)Tb(0.63)F(2.26).

Thermo-optical characteristics of a new magneto-active material, Na(0.37)Tb(0.63)F(2.26) crystal, were investigated in this Letter. This crystal has a high value of magneto-optical figure-of-merit and negative optical anisotropy parameter that makes it a promising material for development of Faraday isolators for high-power lasers; in particular it gives opportunities for the realization of new schemes of optical isolators.