MiXran Meg1058 High-Precision Wedge Window
| Brand | MiXran |
|---|---|
| Model | Meg1058 |
| Component Type | Optical Element |
| Diameter Options | Φ12.5 mm, Φ12.7 mm, Φ25.0 mm, Φ25.4 mm, Φ38.1 mm, Φ50.0 mm, Φ50.8 mm |
| Thickness Options | 3 mm, 6 mm, 10 mm |
| Anti-Reflection Coating Options | AR @ 350–700 nm (VIS), AR @ 600–1100 nm (NIR), AR @ 900–1700 nm (SWIR) |
| Substrate Material | Fused Silica (Grade UV-grade or IR-grade per coating variant) |
| Surface Quality | 20–10 scratch-dig |
| Surface Flatness | λ/10 @ 633 nm |
| Wedge Angle | 0.5° ± 0.1° |
| Clear Aperture | ≥90% of diameter |
| Damage Threshold | >5 J/cm² @ 1064 nm, 10 ns, 10 Hz |
Overview
The MiXran Meg1058 High-Precision Wedge Window is an optically engineered component designed for demanding laser and interferometric applications where beam deviation control, ghost image suppression, and polarization stability are critical. Unlike standard parallel windows, the Meg1058 incorporates a precisely controlled wedge angle of 0.5° ± 0.1°, minimizing interference fringes caused by back-surface reflections—particularly essential in high-finesse cavities, ultrafast laser systems, and low-coherence imaging setups. Fabricated from high-homogeneity fused silica, it delivers exceptional transmission uniformity, low birefringence, and superior thermal stability (dn/dT ≈ 1.1 × 10⁻⁶ /°C). Its performance is validated under ISO 10110-3 standards for surface form and wavefront distortion, ensuring compatibility with alignment-critical optical trains in R&D laboratories and OEM instrumentation.
Key Features
- Precision wedge geometry: 0.5° nominal angle with tight angular tolerance (±0.1°) to guarantee repeatable beam displacement and eliminate etalon effects.
- Multiple AR coating options optimized for spectral bands: VIS (350–700 nm), NIR (600–1100 nm), and SWIR (900–1700 nm), each achieving <0.25% average reflectance per surface.
- High surface quality: 20–10 scratch-dig specification and λ/10 surface flatness (measured at 633 nm HeNe wavelength) support diffraction-limited system integration.
- Controlled clear aperture: ≥90% of nominal diameter ensures usable optical area while accommodating mechanical mounting constraints.
- Low-stress mounting compatibility: Wedge orientation and edge designation (marked per ISO 10110-7) facilitate unambiguous rotational alignment during assembly.
- Robust environmental performance: Fused silica substrate provides <1 ppm/h moisture absorption, negligible fluorescence, and resistance to UV solarization up to 190 nm.
Sample Compatibility & Compliance
The Meg1058 is suitable for integration into Class 1 and Class 4 laser systems compliant with IEC 60825-1:2014. It meets material traceability requirements per MIL-PRF-13830B for optical glass and conforms to RoHS 2015/863/EU and REACH SVHC criteria. All coated variants undergo 100% spectral verification using calibrated UV-VIS-NIR spectrophotometry (PerkinElmer Lambda 1050+ with integrating sphere) and are supplied with individual test reports including measured transmission curves, surface flatness maps, and wedge angle metrology data. The component supports GLP-compliant documentation packages upon request for regulated environments such as medical device optical subsystem validation.
Software & Data Management
While the Meg1058 is a passive optical element, its specification data—including spectral transmittance, wedge-induced beam deviation calculations, and thermal lensing coefficients—is fully compatible with Zemax OpticStudio (v23+) and CODE V (v12.10+) via native .DAT and .COAT file import. Each product shipment includes a digitally signed PDF certificate of conformance containing unique serial traceability, measurement timestamps, and operator calibration signatures aligned with ISO/IEC 17025:2017 laboratory accreditation frameworks. Optional API-accessible metadata (JSON format) can be provided for automated BOM synchronization in PLM systems such as Siemens Teamcenter or PTC Windchill.
Applications
- Laser cavity optics: Elimination of parasitic feedback in Ti:sapphire, Yb:fiber, and quantum cascade laser resonators.
- Interferometry: Use as reference arm window in Michelson, Mach–Zehnder, and Linnik configurations to suppress secondary fringes.
- Spectroscopic instrumentation: Beam steering and path-length tuning in FTIR, Raman, and OCT systems without introducing dispersion artifacts.
- Space-qualified payloads: Radiation-hardened fused silica substrate qualified per ECSS-Q-ST-70-02C for low-Earth orbit exposure.
- Biophotonics platforms: Integration into confocal and multiphoton microscope scan heads requiring polarization fidelity and minimal group delay variation.
- OEM sensor modules: Embedded in gas analyzers (NDIR), LIDAR receivers, and industrial process monitors where long-term dimensional stability is mission-critical.
FAQ
What is the purpose of the wedge angle in this window?
The 0.5° wedge displaces the secondary reflection away from the primary beam path, preventing coherent interference that would otherwise degrade contrast and signal-to-noise ratio in sensitive detection schemes.
Can the Meg1058 be used in vacuum environments?
Yes—fused silica substrate and ion-beam-sputtered AR coatings are rated for UHV compatibility (<10⁻⁹ mbar) with outgassing rates below 1.0 × 10⁻¹² g/(cm²·s) per ASTM E595.
Is custom wedge angle or diameter available?
Standard configurations follow the published matrix; non-standard diameters (e.g., Φ30 mm) or wedge angles (e.g., 1.0°) are available under MiXran’s OEM engineering program with MOQ ≥ 25 units.
How is surface flatness verified?
Measured via phase-shifting interferometry (ZYGO Verifire MST) against a certified λ/20 reference flat, with full-aperture PV and RMS wavefront error reported per ISO 10110-5.
Do you provide mounting fixtures or kinematic mounts?
MiXran offers optional aluminum kinematic mounts (KMW-12.5 through KMW-50.8 series) with NIST-traceable centering accuracy ≤ ±2.5 µm, sold separately.
