Laser Mirror Properties
Laser mirrors are important structures designed for high reflectivity and durability at specific laser wavelengths. They are used on the surface of solid-state lasers and include alexandrite, neodymium glass, ruby, and YAG types. In addition, laser mirrors are integrated with other optical elements and components in various types of lasers.
Laser Mirror Materials
Laser mirrors are made of a variety of materials and are often coated with multiple layers of low-absorption dielectric coatings to enhance reflectivity. Common materials include:
- BK7 glass (borosilicate glass)
- Copper
- Fused silica and UV-grade fused silica
- Nickel
- Optical crown glass
Proprietary materials
Laser mirrors are often coated with various materials to improve their reflective properties. Common coatings include:
Bare aluminum: Excellent reflectivity in the upper UV, visible, and near-infrared regions. The surface is soft and must be handled with care.
Enhanced aluminum: Multiple layers of dielectric films on aluminum enhance reflectivity in the visible or UV region and provide better handling characteristics.
Protective aluminum: Overcoatings protect the fragile aluminum surface and provide wear resistance while maintaining the properties of aluminum.
Gold coating: High reflectivity in the near-infrared to far-infrared region. Gold is soft and scratches easily.
Protective gold: Provides the same performance as gold coating with increased wear resistance.
Rhodium coating provides about 80% reflectivity in the visible spectrum. Rhodium-plated nickel is more resistant to heat and physical damage than glass substrates.
Silver coating: Excellent reflectivity compared to aluminum, but easily oxidizes and tarnishes. Must be sealed to prevent degradation.
Summary of laser mirrors
In general, laser mirrors play a big role in achieving the best performance of the laser system. They can be selected and customized according to specific materials and coatings. If you are interested in our products, you can contact us. The design of laser mirrors can ensure high reflectivity and durability.
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