Magnesium Fluoride (MgF2) Windows
Magnesium fluoride (MgF₂) is suitable for a wide spectral range and provides excellent transmission down to the hydrogen Lyman-alpha line and further into the VUV region. It is particularly well-suited for excimer laser applications.
Description
Magnesium Fluoride (MgF2) Windows offer excellent broadband transmission from the deep-UV to the mid-infrared. DUV transmission makes them ideal for use at the Hydrogen Lyman-alpha line and for UV radiation sources and receivers, as well as excimer laser applications. MgF2 is a rugged material resistant to chemical etching, laser damage, and mechanical and thermal shock. It has a Knoop Hardness of 415 and index of refraction of 1.38.
Specifications:
| Material: | Magnesium Fluoride single crystal |
| Crystal Orientation: | <100> <001> <110> <111> |
| Diameter Tolerance: | +0.0/-0.1mm |
| Thickness Tolerance: | ±0.1mm |
| Clear Aperture: | >85% |
| Parallelism: | 3 arc minute |
| Surface Quality: | 60-40 |
| Wavefront Distortion: | 25mm@633mm |
| Bevel Protective: | <0.25mm X 45° |
| Coating: | Optional |
Standard circular Magnesium Fluoride (Mgf2) window:
| Diameter | Thickness |
|---|---|
| ∅10mm | 1mm |
| ∅12.7mm | 1mm |
| ∅20mm | 2mm |
| ∅25mm | 1mm |
| ∅25.4mm | 3mm |
| ∅30mm | 2mm |
| ∅30mm | 3mm |
| ∅38.1mm | 3mm |
Precautions for Magnesium Fluoride (MgF2) Windows:
- Please specify the crystal orientation when ordering.
- Custom-sized magnesium fluoride windows can be produced, including not only circular shapes but also square or other polygonal magnesium fluoride windows.
- Chamfers of any size and angle can be provided according to the drawing requirements.
FAQs
1. What is your MOQ for Magnesium Fluoride (MgF2) Windows?
Our standard MOQ is 50 pieces for regular production.
For small orders (≤50 pcs), we can still accept production and provide full inspection reports and measurement data for each piece upon request.
2. Do you support small batch or prototype orders?
Yes. We support small batch and prototype production for testing and evaluation before mass production.
3. What is your production lead time?
- Standard polished fused silica windows: 4–5 weeks
- Coated optical windows (AR / HR): 5–6 weeks, depending on coating type and specifications
4. Do you provide inspection reports?
Yes. We provide quality inspection reports based on order quantity:
- ≤50 pcs: Full inspection data for each piece available
- 100–1,000 pcs: 5%–10% random sampling inspection reports
- >1,000 pcs: 0.5% sampling inspection reports
All inspection data includes dimensional and surface quality parameters.
5. What coating options are available?
We offer:
- Anti-Reflection (AR) coatings
- High-Reflection (HR) coatings
- Broadband coatings
- Custom wavelength coatings (UV / Visible / IR)
6. Can you manufacture custom sizes and shapes?
Yes. We support OEM manufacturing according to drawings.
Available shapes include:
- Round
- Square
- Rectangular
- Stepped
- Wedged
- Drilled / special structures
7. What quality certifications do you have?
We are certified under international quality management systems, including:
- ISO 9001 Quality Management System
- IATF 16949 Automotive Quality System
- Good Standardization Practices Certification
We also apply strict internal quality control processes, including dimensional inspection, surface quality testing, and coating performance verification before shipment.
