MiXran Meg1055 Standard-Precision Planar Optical Window
| Brand | MiXran |
|---|---|
| Model | Meg1055 |
| Component Type | Optical Window |
| Substrate Material | Fused Silica (Standard) |
| Surface Flatness | λ/4 @ 633 nm |
| Surface Quality | 20–10 Scratch-Dig |
| Clear Aperture | ≥90% of Diameter |
| Thickness Tolerance | ±0.1 mm |
| Diameter Options | Φ5.0 to Φ50.8 mm |
| Thickness Options | 2 mm (standard), 4 mm (for Φ25.0+ mm) |
| AR Coating Options | Broadband Anti-Reflection (BBAR) for VIS (350–700 nm), NIR (600–1100 nm), SWIR (900–1700 nm) |
| Damage Threshold | >5 J/cm² @ 1064 nm, 10 ns, 20 Hz |
Overview
The MiXran Meg1055 is a high-stability, standard-precision planar optical window engineered for integration into demanding optical systems where spectral transmission fidelity, wavefront preservation, and mechanical robustness are critical. Constructed from UV-grade fused silica—selected for its low thermal expansion coefficient (α ≈ 0.55 × 10⁻⁶ /°C), high laser-induced damage threshold, and excellent transmission from 185 nm to 2.2 µm—the Meg1055 serves as a fundamental interface element in spectroscopy, laser cavity design, imaging optics, and vacuum-compatible instrumentation. Its λ/4 surface flatness (measured at 633 nm HeNe wavelength) ensures minimal wavefront distortion across the clear aperture, while the 20–10 scratch-dig surface quality meets ISO 10110-7 standards for precision optical components. Unlike custom-precision windows, the Meg1055 balances metrological performance with rapid availability and cost efficiency—making it ideal for prototyping, OEM subsystem assembly, and mid-tier laboratory instrumentation.
Key Features
- UV-grade fused silica substrate with certified homogeneity and bubble-free volume
- Standard thickness options: 2 mm (diameters ≤ Φ25.4 mm) and 4 mm (diameters ≥ Φ25.0 mm) for optimized rigidity and stress resistance
- Four broadband anti-reflection (BBAR) coating variants: VIS (350–700 nm), NIR (600–1100 nm), SWIR (900–1700 nm), and uncoated (bare fused silica)
- Consistent <0.25% residual reflectance per surface across specified bands, verified via spectrophotometric calibration traceable to NIST standards
- Edge finish: fine-ground and chamfered (0.2–0.3 mm × 45°) to mitigate chipping and support secure mounting in kinematic or compression-based lens cells
- Full dimensional traceability: each unit serialized and supplied with a Certificate of Conformance (CoC) listing measured diameter, thickness, flatness, and coating spectral data
Sample Compatibility & Compliance
The Meg1055 is compatible with standard optical mounts (e.g., SM1, RMS, or custom flange interfaces) and supports vacuum environments up to 10⁻⁶ mbar when properly sealed. All coated variants comply with MIL-C-48497A for environmental durability (humidity, abrasion, adhesion). Uncoated units meet ASTM F2785 for optical grade fused silica material specifications. BBAR coatings are ion-assisted electron-beam deposited under Class 100 cleanroom conditions, ensuring repeatability and long-term stability under ambient lab conditions. The component conforms to ISO 9001 manufacturing protocols and is suitable for use in GLP-compliant analytical systems where optical path integrity must be documented and auditable.
Software & Data Management
While the Meg1055 is a passive optical component, MiXran provides downloadable spectral transmittance datasets (CSV and SDF formats) for each coating variant, calibrated using a PerkinElmer Lambda 1050+ spectrophotometer with 0.05 nm resolution and NIST-traceable reference standards. These files integrate seamlessly with Zemax OpticStudio, CODE V, and FRED optical design platforms. Customers receive access to an online portal for batch-specific documentation retrieval—including interferometric flatness maps (Zygo GPI data), coating spectral plots, and CoC archives—supporting FDA 21 CFR Part 11–aligned record retention for regulated applications.
Applications
- Laser system output couplers and harmonic separation windows (e.g., Nd:YAG 1064/532/355 nm, Ti:Sapphire 700–1000 nm)
- Spectrometer entrance/exit windows in UV-Vis-NIR benchtop and portable analyzers
- Beam delivery optics in industrial machine vision and semiconductor inspection tools
- Environmental sensor housings requiring stable transmission across diurnal thermal cycles
- Calibration references in radiometry and photometry labs (when used with NIST-traceable sources)
- Vacuum chamber viewports for in-situ optical diagnostics in plasma and thin-film deposition systems
FAQ
What is the maximum operating temperature for the Meg1055 window?
The fused silica substrate is rated for continuous operation up to 1000 °C in inert atmosphere; however, coated versions are limited to 300 °C to preserve AR film integrity.
Can I request custom diameters or thicknesses outside the standard catalog?
Yes—MiXran offers custom fabrication with lead times of 4–6 weeks; minimum order quantity applies.
Are coating spectral curves available before purchase?
Yes—full transmittance/reflectance curves for all four coating variants are published in the product datasheet and accessible via the MiXran Optical Components Portal.
Is the Meg1055 suitable for ultrafast laser applications?
Uncoated and VIS-coated variants are qualified for femtosecond pulses (≥100 fs) at 800 nm with pulse energies <100 µJ; consult technical support for GDD and dispersion specifications.
Do you provide mounting hardware or adapters?
Standard SM1-threaded retaining rings and kinematic mount adapters are available as optional accessories under part numbers MX-ACC-MNT-SM1 and MX-ACC-KM-3X.
