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Dielectric mirrors, also known as Bragg mirrors or distributed Bragg reflectors (DBR), are optical coatings designed to reflect a wide range of wavelengths with exceptionally high reflectivity, typically exceeding 99%. Unlike conventional metallic mirrors, they use multiple layers of alternating high and low refractive index transparent dielectrics.
Ideal for use in laser systems, scientific instruments, and optical communication devices.
| Parameter | Specification |
|---|---|
| Coating | Gold coating, aluminum coating plus dielectric coating, dielectric coating |
| Average Reflectance | 420-680nm @ R > 94% |
| Enhanced Single-Band Reflectivity | 450nm, 532nm, 650nm, 780nm @ R > 97% |
| Substrate | JGS 2, high borosilicate glass |
| Surface Parallelism | λ/10 |
| Clear Aperture | > 95% |
| Surface Quality | 40/20 (S/D) |
| Environmental Testing | MIL-STD-810F |
