Request InfoXi'an Aofa Optoelectronics Technology Inc. (XAOT)Faraday rotator glass for optical isolators, magnetic optical current transformers and electro-optical sensors used in melting, casting and annealing applications is available from Xi'an Aofa Optoelectronics Technology Inc. It has a Verdet constant of –0.38, minimum, at 633 nm, independent of temperature, and a lower nonlinear refractive index to eliminate self-focusing in high-power laser systems. 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