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Help CenterPrecision Coating Technology for High Reflective Dielectric Film Optical Mirrors to Achieve Ultra-low Loss Laser Reflection
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Dielectric reflector is a high-performance optical component based on the principle of multi-layer dielectric film interference. It achieves high reflectivity at specific wavelengths by alternately depositing high and low refractive index materials (such as silicon dioxide, tantalum pentoxide, etc.) on an optical substrate through constructive interference of light. Compared with metal mirrors, dielectric mirrors have significant advantages such as low absorption loss, high laser damage threshold, and good wavelength selectivity, with a reflectivity of over 99.9%. According to different membrane designs, it can be divided into various types such as narrowband mirrors, broadband mirrors, chirped mirrors, etc. It is widely used in high-end optical fields such as laser resonators, fiber optic communication, precision measurement, astronomical observation, and lithography systems, and is an indispensable core device in modern optical engineering.
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