Our laser mirror is a comprehensive performance of good optical products. When applied to the resonator of the laser, the laser mirror must meet the requirements of low reflection loss, a well-defined transmission in a certain wavelength range, high optical quality surface, good resistance to high optical intensity, etc, a high damage threshold, in order to avoid laser-induced damage. Our laser mirror substrates are made of high quality fused silicon/sapphire and are designed for high power laser sources. These mirrors have a high reflectivity >99.8%, high damage threshold, and wavefront distortion < l/4. It is an ideal choice for laser application in cavity.