High-Reflectance Silicon Rear Mirrors (Total Reflectors)
Maximum Intra-Cavity Reflection. Exceptional Thermal Stability. Engineered for OEM CO2 Lasers.
- Maximum Reflectance: Advanced Enhanced Gold (Au) or HR dielectric coatings deliver >99.5% reflection at 10.6μm.
- Superior Thermal Management: Premium Optical-Grade Silicon (Si) substrate provides outstanding thermal conductivity for rapid heat dissipation.
- Zero Wavefront Distortion: Polished to extreme flatness (< λ/40) to guarantee a stable fundamental beam mode (TEM00).
- 100% Export Compliant: Germanium-free, civilian-grade optics ensuring a restriction-free global B2B supply chain.
Technical Specifications
| Technical Parameter | Specification |
|---|---|
| Substrate | Optical Grade Silicon (Si) |
| Design Wavelength | 10.6 μm (CO2 Laser) |
| Reflectance (R) | > 99.5% @ 10.6μm |
| Diameter Tolerance | +0.0 / -0.1 mm |
| Thickness Tolerance | ±0.1 mm |
| Thickness Tolerance | ±0.1 mm |
| Surface Figure | < λ/40 @ 10.6μm |
| Surface Quality | 40-20 scratch and dig (Standard) |
| Clear Aperture | > 90% |
| Chamfer | < 0.3±0.2×45° |
| Coating (Reflective Side) | Enhanced Gold (Au) or High-Reflection (HR) Dielectric Coating |
| Coating (Back Side) | Uncoated or Commercial Polish |
Product Overview
The Backbone of the Laser Resonator
The Rear Mirror, often referred to as the Total Reflector (TR), sits at the very back of the CO2 laser cavity. Its primary function is to bounce nearly 100% of the oscillating laser energy back through the gain medium, working in tandem with the Output Coupler to sustain stimulated emission. Our silicon rear mirrors are engineered to maximize this feedback loop, ensuring your laser systems achieve their highest possible output power and cutting efficiency.
The Silicon Thermal Advantage
Inside a high-power resonant cavity, thermal management is critical. Even a tiny fraction of absorbed energy can warp the mirror surface. We utilize high-purity Optical-Grade Silicon (Si) for our rear mirrors because of its exceptional thermal conductivity and lightweight profile. This allows the mirror to rapidly dissipate heat, completely preventing thermal lensing and structural deformation during 24/7 continuous industrial processing.
Strict Metrology & Global Compliance
Every total reflector undergoes rigorous interferometric testing to guarantee a flawless surface figure and zero intra-cavity scattering. Manufactured strictly for civilian industrial material processing, our Silicon Rear Mirrors are 100% Germanium-free, providing global OEMs and aftermarket distributors with a highly reliable, restriction-free component source.
Metrology & Performance Reports
Figure 1: FTIR Spectrophotometer Reflectance Analysis
Target Wavelength: 10.6 μm | Substrate: Optical Grade Silicon (Si)
The test result demonstrates an ultra-high reflectance rate of 99.92% at the 10.6μm CO2 peak, ensuring maximum intra-cavity energy feedback and optimal resonator efficiency.
Performance Validation & Metrology Analysis
- Testing Equipment: Shimadzu FTIR Spectrophotometer
- Target Wavelength: 10.6 μm (Industrial CO2 Laser)
- Performance Index: Peak Reflectance (R) = 99.92% @ 10.6μm.
- Optical Edge: Advanced High-Reflection (HR) coatings maximize energy feedback, while the optical-grade Silicon (Si) substrate provides superior thermal conductivity for rapid heat dissipation.
- Benefit: Effectively prevents thermal distortion and power loss within the resonant cavity. Guarantees highly stable, continuous-wave (CW) beam delivery for heavy-duty metal cutting and industrial material processing.
Leverage Our In-House Metrology Capabilities
Struggling with power degradation, cavity mirror thermal damage, or unstable beam profiles? Clarvis Industrial provides end-to-end metrology support, including custom reflectance profiling, thermal stability analysis, and high-LIDT optical coatings. Connect with an expert engineer to finalize your resonator fabrication specs and secure highly reliable cavity optics for your assembly line.