金（Au）ミラーは、近赤外線（>800nm）から遠赤外線までの動作帯域、特に2～20μmの範囲において、極めて高い反射率（通常98%以上）を有し、比類のない化学的不活性性と環境安定性も備えています。ECOPTIKは、様々なサイズの保護金コーティングを施した円形、正方形、そしてカスタム形状のミラーを提供しています。
Monocrystalline silicon substrate: High rigidity and good thermal stability, suitable for applications requiring high power density or lightweight design; K9/fused silica substrate: Low cost and high surface accuracy, suitable for general infrared laboratory systems.
In the infrared band (2μm - 20μm), especially at 10.6μm (CO₂ laser), reflectivity typically reaches R > 98% - 99.5%. This means minimal energy loss in the infrared optical path. In the near-infrared band (800nm - 1600nm), reflectivity is also typically above R > 96% - 98%, suitable for fiber lasers and optical communications.
Gold is resistant to oxidation, sulfidation, and corrosion. Pure gold films are relatively soft and easily scratched. A protective film (such as Y₂O₃, SiO₂, etc.) is usually added to the gold film to improve durability and cleanability.
In high-power CO₂ laser or fiber laser systems, it can withstand extremely high continuous power (kW level) without damage. It also possesses excellent heat dissipation capabilities.
| 基板 | K9/フューズドシリカ/シリカガラス |
|---|---|
| 寸法 | 2mm～100mm |
| クリアな絞り | 寸法の90%以上 |
| 表面品質 | 40/20、20/10 スクラッチディグ |
| 表面の凹凸 | λ/2～λ/10 @632.nm |
| 厚さ | 1mm～20mm |
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