Excelitas low loss mirrors provide the lowest possible scattering and absorption loss making them ideal for the most demanding laser-based applications. By utilizing our proprietary state-of-the-art Ion Beam Sputtered (IBS) coating and superpolishing technology, our mirrors are manufactured to ensure the lowest possible scattering losses and deliver ultra-smooth surfaces.
The micro-roughness of these mirrors is below 0.5 Å allowing them to achieve a scattering loss of under 5 ppm and a finesse of 200,000 when incorporated into optical cavities. IBS coatings deliver reflectivities of over 99.998% at any wavelength in the 450 nm to 2 μm range. These mirrors can be customized on a number of different substrate materials, including BK7, fused silica, Zerodur, ULE, sapphire and silicon. They are available in a wide range of sizes, typically 0.25 inch to 4.0 inch (6 mm to 101 mm) in diameter, with a flatness of λ/20 (at 633 nm), 10-5 surface quality over an 80% clear aperture, with zero defects (0-0) achievable over controlled sub-apertures. These mirrors are useful in any laser or laser-based system which demands extremely high reflectivity or very low loss and are typically used as cavity mirrors in low gain gas and solid state lasers, such as HeNe’s and HeCd’s, and in systems which employ nonlinear processes.
| Typical Specifications | |
| Substrate Material | BK7, fused silica, Zerodur, ULE, sapphire, silicon |
| Design Wavelength Range | 450 nm to 2 µm |
| Reflectivity | >99.998% |
| Surface Flatness (@ 633 nm) | λ/20 |
| Surface Quality | 10-5 or better over 80% clear aperture 0-0 over controlled sub-apertures |
| Loss | ≤ 5 ppm |
| Cavity Finesse | > 200,000 |
| Size Range | 0.25" to 4" |
| Temperature Range | −196 °C to 400 °C |
| Humidity Range | 0 to 100% |
Yes, we retrofit legacy systems (e.g., GE Frame 5, Siemens V94.2) with modern digital controllers, typically completing hardware integration within 4-8 weeks. Software migration requires additional validation time.
We recommend annual performance testing under ISO 3977-2 standards. Critical applications (e.g., offshore platforms) may require semi-annual tests with emissions compliance checks.
All rad-hard devices (e.g., FPGA, ADC) are QML Class V certified under MIL-PRF-38535 and tested to MIL-STD-883 Method 1019 for SEU tolerance. Full qualification reports are available upon request.
Our ASICs and power management ICs operate across -55°C to +175°C ambient temperatures, with derating curves provided in military temperature range (MTR) datasheets.
Our PMA parts (e.g., actuators, sensors) hold FAA/EASA Form 1 certification and match OEM form/fit/function. Installation requires SB/MB documentation per FAA AC 23.1529.
All NAS/MS fasteners include full DNA traceability: melt source (AMS 2301), heat/lot numbers, and AS9100-compliant MTRs with ultrasonic test reports.
AOG orders ship within 4 hours for stocked items (FAA-PMA, EASA Part 21G). Non-stock critical parts trigger priority manufacturing with 72-hour max turnaround.
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