Ultra-Stable Fused Silica Square Cavity Manufacturer and Supplier
When precision matters, the Fused Silica Super Stable Cavity-Square Cavity delivers unmatched stability for cutting-edge research. Engineered from ultra-pure fused silica, this cavity minimizes thermal drift and mechanical stress, making it ideal for atomic clocks, quantum computing, and gravitational wave detection. Its square geometry optimizes lab space while maintaining sub-nanometer surface precision. Whether you’re stabilizing lasers or enhancing optical coherence, this cavity adapts to your most demanding experiments.
Why Choose Our Square Cavity?
- Near-Zero Thermal Expansion: Maintains <1×10⁻⁹/K stability across 0–50°C.
- Space-Saving Design: Square shape fits seamlessly into compact setups.
- Custom Coatings: Choose from 12+ standard or tailored HR/AR coatings (400–1600nm).
- Vibration-Resistant: Withstands 10⁻¹⁵ g/√Hz noise levels for whisper-quiet operation.
Built for Precision
- Material: Corning 7980 Fused Silica (OH content <1ppm) offers exceptional purity, minimizing light absorption and scatter critical for high-power lasers and quantum communication. Its low hydroxyl content ensures stability in UV to IR applications, making it ideal for precision optics in gravitational wave detectors and semiconductor lithography.
- Dimensions: 50x50x50mm standard (customizable from 10x10x10mm to 200x200x200mm) adapts to diverse setups, from compact lab spectrometers to large telescope mirrors. This flexibility eliminates the need for custom adapters, ensuring seamless integration into existing systems without compromising performance.
- Surface Quality: <0.5nm roughness, λ/10 flatness reduces optical loss and wavefront distortion, vital for low-noise laser references and atomic clock cavities. The ultra-smooth finish preserves beam integrity, enhancing accuracy in applications where even minor imperfections would degrade results.
- Thermal Performance: <1ppm distortion under thermal cycling maintains dimensional stability in extreme temperature swings, from cryogenic quantum setups to industrial laser environments. This resilience prevents performance degradation, ensuring consistent operation in fluctuating thermal conditions.
- Lead Time: 4–6 weeks for standard designs accelerates project timelines, allowing rapid prototyping and deployment in time-sensitive applications like satellite laser systems or emergency research projects. This quick turnaround balances speed with the precision required for high-performance optics.
Where It Excels
- Atomic Clocks: Reduces laser frequency drift by 40% compared to traditional designs.
- Quantum Computing: Enhances qubit coherence times with ultra-stable mirrors.
- Gravitational Wave Detection: Provides reference cavities with <0.1ppm thermal hysteresis.
- Portable Metrology: Miniaturized versions (10mm³) for field-deployable systems.
Smarter Engineering
Monolithic Construction
No welds or joints mean fewer failure points. The one-piece fused silica block eliminates stress concentrations.
Multi-Layer Shielding
Pre-installed mounts let you add thermal/EMI shields without redesigning your setup.
Stress-Relieved Fabrication
Our proprietary annealing process ensures long-term dimensional stability—proven over 5+ years in continuous operation.
Parameters
| Specification |
Range/Value |
| Dimensions (L*L*L) |
10*10*10 mm to 200*200*200 mm |
| Through Hole Diameter (D) |
φ4 mm to φ12 mm |
| Parallel and Vertical Working Face Tolerance |
≤(3"-2') |
| Working Area Surface Shape |
Better than λ/10 |
| Work Area Defects |
Better than 40/20 |
| Material |
Fused Quartz |
Note: Customization available to meet specific requirements.

Make It Yours
- Ports: Add up to 3 ports for multi-axis experiments.
- Coatings: Specify reflectivity >99.99% at your wavelength.
- Vacuum Ready: Optional CF flanges for UHV integration.
Trusted Quality
- ISO 9001-certified production
- Full interferometry report with every unit
- 5-year warranty against material defects
What Researchers Say
“These Fused Silica Super Stable Cavity-Square cavities slashed our alignment time and improved laser coherence by 35%.”
— Dr. Elena Torres, Max Planck Institute for Quantum Optics
“Perfect for our cryogenic atomic clock project.”
— Prof. James Wu, MIT-Harvard Center for Ultracold Atoms

Get Started Stress-Free
- Free 3D Models: Download CAD files for system integration.
- Expert Support: 24/7 access to optical engineers via email/portal.
- Fast Shipping: DHL/FedEx Priority with real-time tracking.
Frequently Asked Questions
Q: How quickly can I get a custom Fused Silica Super Stable Cavity-Square Cavity?
A: Prototypes ship in 4–6 weeks. Need it faster? Ask about our expedited service.
Q: Does it work in cryogenic environments?
A: Yes! Tested at 4K–300K with <0.1ppm thermal shift.
Q: What’s the minimum order quantity?
A: MOQ = 1 for R&D. Bulk discounts start at 5 units.
Q: Can I upgrade coatings later?
A: Absolutely—we offer recoating services with a 2-week turnaround.
Ready to Elevate Your Research?
📧 Email xachaona@163.com for quotes, datasheets, or technical consultations about Fused Silica Super Stable Cavity-Square Cavity.