Calcium Fluoride Super Low Loss Flat Mirror

① Dimension D=φ3-φ25mm (tolerance ±0.1),H=3-8mm D:H > 4:1 (tolerance ±0.5)
D=φ26-φ100mm (tolerance ±0.1),H=6-25mm D:H > 5:1 (tolerance ±0.5)
② Coating area size: conventional size D12.7, coating area size 7.5; D25 coating area size 10, other coating area size can be customized
③ Surface accuracy: λ/ 10@632.8nm
④ Parallel error: <10"
⑤ Roughness: Ra0.12nm (Zygo profilometer) test area 173*173um full frequency measurement
⑥Coating requirement: wavelength 420nm-3000nm, reflection ≥99.999%, loss 2-3ppm, transmission 3-5ppm
Back anti-reflection;
⑦ Material:Calcium fluoride
Note: The specific indicators are not limited to the above scope, and can be customized according to user's needs.
Application:Femtosecond ultrafast laser, high precision optical detection
Product Description

Calcium Fluoride Super Low Loss Flat Mirror

When your projects demand near-perfect light control, our Calcium Fluoride Super Low Loss Flat Mirror delivers. Engineered for high-energy laser systems and ultra-precise optical setups, these mirrors combine ultra-low absorption (<2 ppm) with exceptional surface accuracy (λ/10 @ 632.8nm). Whether you’re optimizing femtosecond lasers or semiconductor lithography tools, our mirrors minimize wavefront distortion while maximizing reliability—even under extreme thermal and mechanical stress.

Key Specifications at a Glance

  • Material: Synthetic Calcium Fluoride (≥99.99% purity)
  • Dimensions: Customizable from φ3mm to φ100mm
  • Surface Accuracy: λ/10 @ 632.8nm
  • Roughness: <0.12nm Ra (tested via Zygo profilometer)
  • Coating Performance: Reflectivity ≥99.999% (420nm–3000nm)
  • Thermal Stability: Withstands temperatures from -50°C to 150°C

Parameters

Specification Value
Dimension Dimension D=φ3-φ25mm (tolerance ±0.1),H=3-8mm D:H > 4:1 (tolerance ±0.5)
D=φ26-φ100mm (tolerance ±0.1),H=6-25mm D:H > 5:1 (tolerance ±0.5)
Coating Area conventional size D12.7, coating area size 7.5; D25 coating area size 10, other coating area size can be customized
Surface Accuracy λ/10 @ 632.8nm
Parallel Error <10"
Roughness Ra0.12nm (Zygo profilometer, 173x173µm area)
Coating 420nm-3000nm, Reflection ≥99.999%, Loss 2-3ppm, Transmission 3-5ppm
Material Calcium Fluoride

Note: Custom specifications are available upon request to meet your specific needs.

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Why Choose Our Calcium Fluoride Mirrors?

1. Ultra-Low Loss, Maximum Efficiency

Our proprietary coating technology reduces optical loss to <0.01% at critical UV/IR wavelengths. This means more energy reaches your target—whether you’re powering lithography systems or calibrating hyperspectral sensors.

2. Nanoscale Surface Perfection

Achieve sub-nanometer smoothness (<0.12nm Ra) thanks to advanced polishing methods. This minimizes light scatter, ensuring crisp beam profiles and accurate measurements.

3. Built for Extreme Environments

Rigorously tested under MIL-STD-810 standards, these mirrors resist thermal shock, humidity, and mechanical vibration. Perfect for aerospace or round-the-clock fab operations.

4. Customizable to Your Needs

Need a unique size, coating stack, or curvature? Our team delivers tailored solutions in as few as 8 weeks.

Precision Engineering for Critical Applications

  • Femtosecond Laser Systems: Reduce pulse distortion and maintain peak power with mirrors designed for ultrafast laser cavities, featuring sub-ångström smoothness (<0.12nm Ra) to minimize scatter—critical for preserving pulse integrity in micromachining and spectroscopy, where distortion would degrade precision.​
  • Semiconductor Lithography: Optimized for 193nm/248nm wavelengths, our Calcium Fluoride Super Low Loss Flat Mirror enhance resolution in ASML, Nikon, and Canon lithography tools, leveraging 99.999% reflectivity to boost energy efficiency, ensuring sharp patterning in sub-7nm chip production where wavelength-specific performance is key.​
  • High-Precision Metrology: Ensure measurement accuracy in interferometry or spectroscopy setups with near-zero wavefront error, paired with <0.1% scatter loss to eliminate signal interference, enabling reliable data in semiconductor inspection and scientific research where precision dictates result validity.

Quality You Can Trust

  • Certifications: ISO 9001, ISO 14001, and SEMI F57 compliant
  • Testing: 100% inspected using Zygo interferometers and atomic force microscopy
  • Cleanroom Standards: Class 10 manufacturing to eliminate particulate contamination

Custom Solutions for Your Needs

From diameter-to-thickness ratios (D:H up to 5:1) to anti-reflective back coatings, we adapt to your requirements.

Popular Customizations:

  • Coating area adjustments (e.g., 7.5mm on D12.7mm substrates)
  • Enhanced AR coatings for broadband applications
  • Radiation-hardened versions for space optics

Technical Support & Expertise

Our in-house engineers provide:

  • Free Application Analysis: Ray tracing simulations and thermal stress modeling
  • Rapid Prototyping: Test mirror performance before full-scale production
  • Lifetime Support: Post-sale maintenance and recalibration services

Bulk Order Advantages

Order 10+ units and enjoy:

  • Priority Production
  • Volume Discounts (up to 15% off)
  • Dedicated Account Management

Compliance & Safety Standards

  • REACH/RoHS compliant
  • ITAR-free
  • Cleanroom-packaged (ISO Class 5)

Get Started Today

Need a Mirror That Matches Your Precision Standards?

Request a Quote or Upload Your Specifications

Lead Time: 6–8 weeks for standard orders | Expedited options available

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FAQ

1. How does surface roughness impact performance?

Sub-nanometer smoothness (<0.12nm Ra) minimizes scatter, which is critical for maintaining beam integrity in high-power lasers.

2. Can these Calcium Fluoride Super Low Loss Flat Mirror handle high thermal loads?

Yes. They’re tested to withstand thermal cycling (-50°C to 150°C) without performance loss.

3. What purity grade do you use?

We source ≥99.99% pure CaF₂, with impurity levels tracked via certified material reports.

4. Do you offer protective coatings?

Optional AR coatings reduce reflection loss on the mirror’s backside, boosting overall transmission.

Contact us

Contact our optical engineers: xachaona@163.com about Calcium Fluoride Super Low Loss Flat Mirror.

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