A Total Reflector is a key optical component used primarily as a back mirror or folding mirror in laser systems. Its main function is to redirect laser beams within resonant cavities or guide the beam path outside the laser source with minimal loss and high stability.
Shape Optics Technologies Pte Ltd (SOT) designs and manufactures total reflectors using advanced materials such as Silicon, Copper, and Fused Silica, selected for their superior thermal properties and optical performance. These materials provide excellent durability, thermal conductivity, and resistance to thermal shock, making total reflectors especially suitable for high-power CO₂ and solid-state laser systems.
By maintaining beam quality and intensity throughout the optical path, SOT total reflectors play a critical role in laser engraving, cutting, marking, and other precision laser processes.
Key Features
- High Durability: Engineered for long service life in demanding industrial and scientific laser environments.
- Excellent Thermal Stability: Maintains optical performance under high temperatures and high laser power densities.
- High Thermal Conductivity: Efficient heat dissipation minimizes thermal distortion and protects optical systems from damage.
- High Reflectivity: Reflectivity of ≥99.4% (and up to ≥99.7% for fused silica designs) ensures minimal energy loss.
- Broad Application Scope: Ideal for laser marking, cutting, engraving, and other high-power laser applications.
Spectral Performance
Total reflectors provide excellent broadband reflection, optimized for specific laser wavelengths:
Silicon / Copper:
Optimized for 10.6 µm (CO₂ lasers)
Reflectivity ≥99.4% – 99.5%
Fused Silica:
Optimized for 1064 nm (Nd:YAG / fiber lasers)
Reflectivity ≥99.7%
This high reflectivity ensures maximum energy efficiency and stable laser output.
Coating Quality & Reliability
All total reflectors are tested according to stringent international standards:
- Adhesion Test – MIL-C-675C compliant, no blistering or peeling
- Thermal Cycling – −62 °C to +71 °C with no coating detachment
- Abrasion Resistance – MIL-C-675C & CCC-C-440, 25 cycles at 0.45 kg
- Humidity Resistance – 95–100% RH at 49 °C for 24 hours, no defects
- Solvent & Cleaning Resistance – Acetone and alcohol exposure without damage
- Salt Spray Test – 100 hours at 5% salinity with no corrosion
Standard Specifications
| Parameter | Specification |
|---|---|
| Materials | Silicon, Copper, Fused Silica |
| Wavelengths | 10.6 µm (Silicon, Copper), 1064 nm (Fused Silica) |
| Reflectivity | ≥99.4% (Si), ≥99.5% (Cu), ≥99.7% (FS) |
| Diameter Tolerance | ±0.2 mm |
| Thickness Tolerance | ±0.1 mm |
| Thickness | 1 mm |
| Clear Aperture | ≥80% of diameter |
| Surface Quality | 60-40 scratch & dig |
| Coating Type | Multilayer dielectric high-reflection |
| Radius of Curvature | 3M / 5M / 8M / 10M / Flat |
Standard Products
| Material | Wavelength | Size (mm) | Reflectivity | Radius |
|---|---|---|---|---|
| Silicon | 10.6 µm | Ø18 | >99.4% | 3M / 5M / 8M / 10M / Flat |
| Silicon | 10.6 µm | Ø38 | >99.4% | 3M / 5M / 8M / 10M / Flat |
| Silicon | 10.6 µm | Ø50.8 | >99.4% | 3M / 5M / 8M / 10M / Flat |
| Copper | 10.6 µm | Ø18 | >99.5% | 3M / 5M / 8M / 10M / Flat |
| Copper | 10.6 µm | Ø38 | >99.5% | 3M / 5M / 8M / 10M / Flat |
| Copper | 10.6 µm | Ø50.8 | >99.5% | 3M / 5M / 8M / 10M / Flat |
| Fused Silica | 1064 nm | Ø12.7 | >99.7% | 3M / 5M / 8M / 10M / Flat |
| Fused Silica | 1064 nm | Ø20 | >99.7% | 3M / 5M / 8M / 10M / Flat |
| Fused Silica | 1064 nm | Ø38 | >99.7% | 3M / 5M / 8M / 10M / Flat |
| Fused Silica | 1064 nm | Ø50.8 | >99.7% | 3M / 5M / 8M / 10M / Flat |
Custom sizes, curvatures, and coatings are available upon request.
Applications
- Laser Marking, Cutting & Engraving Systems
- Laser Resonator Cavities (Back & Folding Mirrors)
- High-Power CO₂ and Solid-State Lasers
- Industrial Manufacturing & Scientific Research
- Beam Deflection and Optical Path Control