The Rear Mirror, known for very high reflectivity (>99.7%), is the crucial optical component in the laser resonator. The Output Coupler is a partially reflective mirror to extract a portion of the laser beam from the laser resonator. They often require a slight wedge to prevent interference from multiple reflections inside the component. Rear Mirror and the output coupler are collectively known as Cavity Mirror.
Diameter Tolerance: +0/-0.13mm
Thickness Tolerance: ±0.25mm
Centration: 90%
Surface Quality: 40-20 S-D
Angle of Incidence: 0°