Crystal Structure & Purity: Our GGG substrates and wafers feature a cubic crystal structure with a lattice constant of a=12.376Å, ensuring excellent structural match with YIG and BIG thin film magneto-optical materials. The purity level of 99.95% guarantees superior performance and reliability.

Thermal Expansion Coefficient: The thermal expansion coefficient of GGG is carefully controlled to match that of the epitaxial films, minimizing stress during thermal cycling and ensuring stable device performance over a wide temperature range.

Chemical Stability: GGG exhibits excellent chemical stability, resistant to decomposition and corrosion during the high-temperature epitaxial growth processes, preserving the quality of the deposited films.

Optical Properties: With a refractive index of 1.95, GGG substrates and wafers are ideal for applications requiring precise optical control, such as optical isolators and waveguides.

Surface Quality: The wafers are polished to a surface roughness of Ra≤5Å (5×5µm), ensuring smooth surfaces for defect-free epitaxial growth and enhanced device performance.

Customization: Kingwin Optics offers customized GGG substrates and wafers in various dimensions, thicknesses, and orientations to meet the specific requirements of our customers.

Application Areas: Magneto-Optical Devices, Microwave Devices, Magnetic Bubble Memory, Integrated Optics, etc.