MiXran Meg1056 High-Precision Optical Plane Window
| Brand | MiXran |
|---|---|
| Model | Meg1056 |
| Component Type | Optical Window |
| Diameter Options | Φ5.0–Φ50.8 mm |
| Thickness Options | 2–10 mm |
| Coating Options | Uncoated, AR @350–700 nm (VIS), AR @600–1100 nm (NIR), AR @900–1700 nm (SWIR) |
| Material | Fused Silica (Grade UV-Grade or IR-Grade per specification) |
| Surface Quality | 10–5 scratch-dig |
| Surface Flatness | λ/10 @ 633 nm |
| Parallelism | <3 arcsec |
| Clear Aperture | ≥90% of diameter |
Overview
The MiXran Meg1056 High-Precision Optical Plane Window is a rigorously engineered fused silica optical component designed for demanding laser, spectroscopic, and imaging applications where wavefront fidelity, transmission stability, and environmental durability are critical. Constructed from synthetic fused silica with low thermal expansion (α ≈ 0.55 × 10⁻⁶ /°C), the Meg1056 window maintains dimensional stability across wide temperature ranges and exhibits exceptional transmission from deep ultraviolet (185 nm) through near-infrared (2.2 µm), depending on grade selection. Its λ/10 surface flatness and <3 arcsec parallelism ensure minimal beam deviation and phase distortion—essential for interferometric setups, ultrafast laser cavities, and high-numerical-aperture optical systems. Unlike standard commercial windows, the Meg1056 series undergoes full metrological certification including interferometric surface verification, spectral transmittance mapping, and batch traceability documentation.
Key Features
- Precision-ground and polished fused silica substrates available in UV-grade (e.g., Suprasil 300) or IR-grade (e.g., Infrasil 301) formulations to optimize transmission in target spectral bands
- Multiple anti-reflection coating options deposited via ion-assisted e-beam evaporation: broadband VIS (350–700 nm, R<0.5% avg), NIR (600–1100 nm, R<0.4% avg), and SWIR (900–1700 nm, R<0.5% avg)
- Consistent surface quality rated at 10–5 scratch-dig per MIL-PRF-13830B, verified by automated dark-field inspection
- Controlled thickness tolerance (±0.05 mm) and diameter tolerance (±0.02 mm) to support precision mechanical mounting in kinematic and vacuum-compatible holders
- Low birefringence (<5 nm/cm) and homogeneity Δn < 1 × 10⁻⁶, validated per ISO 10110-4 for polarization-sensitive applications
- Optional custom edge treatments (e.g., 0.2 mm protective chamfer, black anodized aluminum retention rings) available upon request
Sample Compatibility & Compliance
The Meg1056 window is compatible with vacuum environments up to 10⁻⁶ mbar and cleanroom Class 100 handling protocols. All coated variants comply with ISO 9211-3 for optical coating durability (adhesion tested per ASTM D3359, humidity resistance per ISO 9211-4). Uncoated and AR-coated versions meet RoHS 2015/863/EU and REACH SVHC requirements. For regulated life-science or pharmaceutical instrumentation integration, documentation packages include material certificates (EN 10204 3.1), coating spectral reports (CIE 15:2018-compliant measurement protocol), and batch-level interferometric flatness maps. The component supports GLP-aligned calibration workflows when used as part of certified optical assemblies.
Software & Data Management
While the Meg1056 is a passive optical element, MiXran provides digital asset support for system integrators: downloadable spectral transmittance datasets (.csv and .sdf formats) for each coating variant, Zemax OpticStudio-compatible coating stack files (.coating), and STEP/AP214 CAD models with GD&T annotations. All product data is version-controlled and archived in accordance with ISO/IEC 17025:2017 clause 7.5.2 for record retention. Traceability metadata—including substrate lot number, coating run ID, and interferogram timestamp—is embedded in the shipping label QR code and accessible via MiXran’s secure portal for audit-ready documentation.
Applications
- Laser cavity end windows and Brewster angle mounts for Ti:sapphire, Yb:fiber, and quantum cascade lasers
- Beam delivery optics in industrial laser processing systems requiring high-power CW or pulsed irradiance (>10 J/cm² @ 1064 nm, 10 ns)
- Entrance/exit windows for FTIR spectrometers, Raman probes, and hyperspectral imaging sensors
- Vacuum chamber viewports for UHV surface science instruments (LEED, AES, XPS)
- Reference optics in metrology-grade autocollimators and collimation test benches
- UV lithography alignment subassemblies and excimer laser beam conditioning trains
FAQ
What fused silica grade is used for UV-critical applications?
Standard Meg1056 windows use UV-grade fused silica (e.g., Heraeus Suprasil 300) with OH content 2.0 µm transmission.
Can I specify custom curvature or wedge angles?
The Meg1056 is defined as a plane-parallel window; custom plano-convex or wedged variants fall under the Meg1057 series and require separate quoting.
Is laser-induced damage threshold (LIDT) data available?
Yes—LIDT values are provided per ISO 21254-1:2011 for 1064 nm, 10 ns pulses (typ. 15 J/cm² for uncoated; 12 J/cm² for VIS AR) and CW 532 nm (500 kW/cm²), measured at 20°C ambient and 50% RH.
Do you provide mounting hardware or kinematic cells?
Standard retaining rings (aluminum or stainless steel) and vacuum-compatible CF flange adapters are available as optional accessories under part family MWK-xx.
How is surface cleanliness verified prior to shipment?
Each unit undergoes particle counting per ISO 14644-1 Class 5 cleanroom protocol, followed by solvent rinse (IPA + acetone), nitrogen dry, and inspection under 100× magnification with calibrated dark-field illumination.
