SINGLE CRYSTAL, PROCESS FOR PRODUCING SAME, OPTICAL ISOLATOR, AND OPTICAL PROCESSOR USING SAME

摘要

Provided is a single crystal for optical isolators which has a larger Faraday rotation angle than single-crystal TGG in a range of wavelengths not shorter than 1,064 nm or in a range of wavelengths shorter than 1,064 nm and which renders an increase in size possible. Also provided are a process for producing the single crystal, an optical isolator, and an optical processor using the optical isolator. The single crystal is characterized by comprising a single crystal of terbium-aluminum garnet, mainly the aluminum having been partly replaced with lutetium.