GT Advanced Technologies Receives Order for Large Optical Sapphire Blank for Gravitational Wave Telescope

GT Advanced Technologies Inc.,

, today announced that its subsidiary, GT Crystal Systems, has received an order for a large, low absorption, optical sapphire blank for the Large-Scale Cryogenic Gravitational Wave Telescope program located in Japan. The LCGT will use the sapphire optic to measure changes in gravitational waves resulting from cosmic events. The LCGT is an extremely sensitive instrument that requires sapphire that contains an almost perfect crystalline structure, without bubbles or inclusions, throughout the optic