High-power Faraday isolators based on TAG ceramics

The Faraday isolator based on a new magneto-optical medium TAG (terbium aluminum garnet) ceramics was implemented and investigated experimentally. The magneto-optical element was temperature-stabilized using water cooling. The device provides a stable isolation ratio of 38 dB at 300 W laser power. Estimates show high performance of the device at a kilowatt laser power. (C) 2014 Optical Society of America