Low Scattering Substrate
We can provide special optical polishing service for optics or wedge substrate that achieve surface roughness of <0.2nm (Ra). These low scattering substrates are in high demand for high power laser and X-ray applications.
Use a wedged substrate for a beamsplitter to prevent effects of back reflection.
CaF2 (calcium fluoride) and MgF2 (magnesium fluoride) are mainly used in UV and IR for its high transmittance.
Our highly technical processing yields low surface roughness (microscopic irregularities) and precision surface accuracy (flatness of whole surface).
Common Specifications
| Material | Synthetic fused silica, UV Grade CaF2, MgF2 |  |
|---|---|---|
| Surface Roughness | ＜0.2nm（Ra） | |
| Clear Aperture | 90% of the diameter |
| Schematic | Outline Drawing |
|---|---|
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| Optics | ||||||
|---|---|---|---|---|---|---|
| Part Number | Diameter φD |
Thickness t |
Material | Surface flatness | Parallelism | Surface Quality (Scratch-Dig) |
| OPSQSP-25.4C05-10-5 | φ25.4mm | 5mm | Synthetic fused silica | λ/10 | ＜5″ | 10 − 5 |
| OPSQSP-30C03-10-5 | φ30mm | 3mm | Synthetic fused silica | λ/10 | ＜5″ | 10 − 5 |
| OPSQSP-30C05-10-5 | φ30mm | 5mm | Synthetic fused silica | λ/10 | ＜5″ | 10 − 5 |
| OPSQSP-50C05-10-5 | φ50mm | 5mm | Synthetic fused silica | λ/10 | ＜5″ | 10 − 5 |
| OPCFSP-25.4C05-10-5 | φ25.4mm | 5mm | CaF2 | λ/10 | ＜5″ | 20 − 10 |
| OPCFSP-30C05-10-5 | φ30mm | 5mm | CaF2 | λ/10 | ＜5″ | 20 − 10 |
| OPMFSP-25.4C05-10-5 | φ25.4mm | 5mm | MaF2 | λ/10 | ＜5″ | 20 − 10 |
| OPMFSP-30C05-10-5 | φ30mm | 5mm | MaF2 | λ/10 | ＜5″ | 20 − 10 |
| Wedge | ||||||
|---|---|---|---|---|---|---|
| Part Number | Diameter φD |
Thickness t |
Material | Surface flatness | Wedge Angle W |
Surface Quality (Scratch-Dig) |
| WSSQSP-30C05-10-1 | φ30mm | 5mm | Synthetic fused silica | λ/10 | 1°±5′ | 10 − 5 |
| WSSQSP-50C08-10-1 | φ50mm | 8mm | Synthetic fused silica | λ/10 | 1°±5′ | 10 − 5 |
| WSCFSP-30C05-10-1 | φ30mm | 5mm | CaF2 | λ/10 | 1°±5′ | 20 − 10 |
| WSMFSP-30C05-10-1 | φ30mm | 5mm | MaF2 | λ/10 | 1°±5′ | 20 − 10 |
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