Why Granite is the Optimal Choice for Picosecond Lasers
Picosecond lasers demand unparalleled stability to maintain beam alignment and micron-level precision during high-energy, ultrafast operations. Granite, as a naturally engineered material, provides critical advantages over traditional metals or composites:
1. Exceptional Thermal Stability
- Ultra-Low CTE: Granite’s coefficient of thermal expansion (CTE < 4.5×10⁻⁶/°C) minimizes dimensional shifts caused by temperature fluctuations, ensuring consistent performance in environments ranging from 15°C to 35°C.
- Thermal Drift Resistance: Maintains flatness within ±0.3μm/°C, critical for picosecond lasers used in medical device micromachining or semiconductor scribing.
2. Superior Vibration Damping
- Natural Vibration Absorption: Granite’s dense microstructure attenuates vibrations by up to 90% compared to steel bases, eliminating interference from external sources (e.g., cooling systems, floor vibrations).
- Nanometer-Level Stability: Essential for applications requiring <1μm positioning accuracy, such as optical coherence tomography (OCT) or laser ablation.
3. Long-Term Durability
- Zero Corrosion: Unlike metal bases, granite resists oxidation, coolants, and humidity, ideal for harsh industrial or cleanroom environments.
- Wear-Free Surface: Maintains original flatness for decades with minimal maintenance, reducing total cost of ownership.
4. Customized Precision Machining
- Tailored Designs: Precisely machined mounting holes, grid patterns, and threaded inserts (e.g., M6/M8) to match laser OEM specifications (e.g., IPG Photonics, Coherent).
- ESD-Safe & Vacuum-Compatible: Optional surface treatments for electrostatic discharge (ESD) protection or ultra-high vacuum (UHV) compatibility.
Technical Specifications
| Parameter | Value |
|---|---|
| Material | Class-00 Black Granite (ISO 1302) |
| Flatness | ±1.5μm/m (DIN 876 Standard) |
| Surface Finish | <0.8μm Ra (Mirror Polish Optional) |
| Max Load Capacity | 800 kg/m² |
| Standard Sizes | 600x600mm to 2000x3000mm |
| Certifications | ISO 9001, RoHS Compliant |
Key Applications
- Medical Device Manufacturing: Micromachining of coronary stents and surgical tools.
- Semiconductor Processing: Wafer dicing and laser-induced forward transfer (LIFT).
- Scientific Research: Attosecond pulse generation and nonlinear optics experiments.
- Industrial Marking: High-contrast engraving on aerospace alloys.
Why Choose Our Granite Bases?
- Proven Performance: Trusted by Tier-1 laser manufacturers in Germany and Japan.
- NIST-Traceable Calibration: Optional certification for ISO/IEC 17025-compliant labs.
- Rapid Prototyping: 3D CAD modeling and 15-day lead time for custom orders.
FAQ
Q: Can the base integrate with active vibration isolation systems?
A: Yes – we design interfaces for integration with TMC or Herzan active dampers.
Q: Is granite suitable for high-power (>50W) laser systems?
A: Absolutely. Our bases include heat-dissipation channels for lasers up to 200W.
Optimized for Your Laser’s Peak Performance
By combining granite’s innate properties with precision engineering, our bases ensure your picosecond laser systems achieve repeatable, sub-micron accuracy – today and for decades to come.