Characteristics of Bi:YIG Magneto-Optic Thin Films Fabricated by Pulsed Laser Deposition Method for an Optical Current Transformer

Pulsed laser deposition (PLD) technique is applied for fabricating Bi doped yttrium iron garnet (BixY3-xFe5O12) (Bi:YIG) thin films which can be used for optical current transformer. Growth conditions of high quality Bi:YIG thin films on Gd3Ga5O12 (GGG) substrates are investigated by varying PLD process parameters. The magneto-optic sensitivity coefficient of the fabricated Bi-YIG thin film is measured as 44 deg/T at a wavelength of 500 nm.