Thin film coating applied to optical surfaces to reflect specific wavelengths while transmitting others in transmission media.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Adhesion | Class 5B per ASTM D3359 | |
| Bandwidth | ±10-50 nm around center wavelength | |
| Durability | MIL-C-48497 compliant | |
| Reflectivity | >99.5% at target wavelength | |
| Surface Roughness | <1 nm RMS | |
| Operating Temperature | -40°C to +85°C | |
| Laser Damage Threshold | >5 J/cm² at 1064 nm |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
The material or structure within an opto-isolator that transmits optical signals between the input and output sides while maintaining electrical isolation.
An optical component that converts divergent or convergent light into parallel rays within a spectrometer.
A precisely controlled reflective optical component that directs and steers laser or light beams in scanning systems.
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Dielectric coatings use multiple transparent layers for high reflectivity (>99.9%) at specific wavelengths with low absorption, while metallic coatings (Al, Ag) provide broad-spectrum reflectivity but with higher absorption losses and lower damage thresholds.
Layer count, thickness, and material selection determine reflectivity bandwidth, angular sensitivity, polarization effects, and environmental durability. More layers typically increase reflectivity but reduce bandwidth and increase cost.
Minimal maintenance; avoid mechanical contact, use cleanroom handling, and employ appropriate cleaning solutions (e.g., methanol, acetone) with lint-free wipes. Regular inspection for scratches, delamination, or contamination is recommended.
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