PE-MIRROR-GOLD-025 · Standard + Custom

Protected Gold Mirrors

Broadband infrared mirrors with excellent reflectance from 700nm to 20µm

Material
BK7 / Fused Silica substrate
Wavelength
IR (700nm-20µm)
Type
Reflective Mirror
Category
Optical Mirrors
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Protected Gold Mirrors

Key Specifications

TypeProtected Gold
Reflectivity> 98% (> 700nm to 20µm)
SubstrateBK7 / Float Glass
Diameter6-150 mm
Surface Quality40-20 / 20-10
Flatnessλ/4 @ 632.8nm
IR Range700nm - 20µm
ProtectionOvercoat for durability

What Is a Protected Gold Mirrors?

Protected Gold Mirrors provide high-reflectivity optical surfaces for laser beam steering, alignment, and general optical systems. PhotonEdge mirrors are manufactured with precision substrates and controlled coating processes to ensure reliable performance.

When Should You Use This Product?

✔ Good Choice When

  • ✓ Infrared optical systems
  • ✓ Thermal imaging relay optics
  • ✓ Broadband IR spectroscopy
  • ✓ FTIR and mid-IR beam steering

⚠ Consider an Alternative When

✗ Visible broadband → Protected Silver Mirror
✗ UV-NIR broadband → Protected Aluminum Mirror
✗ Specific wavelength HR → Dielectric Mirror
✗ CO₂ laser specific → ZnSe optics

Available Optical Materials

Select the optimal substrate material based on your wavelength, environment, and budget requirements.

MaterialTransmissionKey AdvantageConsiderations
BK7VIS / NIR substrateStandard substrate for visible mirrorsNot for UV or IR
UV Fused SilicaUV / VIS / NIR substrateLow thermal expansion, high LIDTHigher cost
Float GlassVIS substrateEconomy choice for visible mirrorsLower optical quality

Not sure which material to choose?

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Optical Coating Options

Protected Gold

R > 98% from 700nm to 20µm. Best IR broadband reflectance.

Typical use: IR and thermal imaging systems

How to Specify Your Coating

To select the right coating, please provide: (1) Operating wavelength, (2) Angle of incidence, (3) Required transmission or reflectivity, (4) Laser power density (if applicable), (5) Operating environment.

Engineering Considerations

Key factors to evaluate when specifying this optical component for your system.

Reflectivity

Verify reflectance meets your system throughput requirements. Factor in both reflection losses and absorption.

AOI

Specify angle of incidence for proper coating design. Non-normal AOI causes S/P polarization differences.

LIDT

For laser applications, specify power density and pulse parameters to ensure coating durability.

Handling

Handle mirrors by edges only. Clean with compressed gas first, then optical-grade solvents if needed.

Have a Custom Optical Requirement?

Upload your drawing or describe your specification. Our engineering team will review and respond within 24 hours with a detailed quotation.

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Applications

CO₂ Laser Systems

Windows and lenses for CO₂ laser cutting, welding, and marking.

Thermal Imaging

Mid-IR and LWIR optics for thermal cameras and infrared systems.

FTIR Spectroscopy

Infrared optics for Fourier-transform infrared spectrometers.

Industrial Processing

High-power IR laser delivery and process monitoring.

Manufacturing & Customization

PhotonEdge supports optical component sourcing, engineering review, and qualified manufacturing through our optical manufacturing network. We coordinate production, coating, and inspection to deliver components that meet your specifications.

🔬
Prototype
⚙️
Low Volume
🏭
Volume Production
📋
Custom Specification

Quality Assurance

Dimensional Inspection

Diameter, thickness, focal length verified per specification

Surface Quality

Scratch-dig inspection under calibrated illumination

Coating Verification

Spectrophotometric measurement of transmission/reflectance

Inspection documentation available according to project requirements. Certificates of Conformance, material test reports, and coating curves can be provided.

You May Also Need

Protected Silver Mirrors

VIS-NIR broadband

Protected Aluminum Mirrors

UV-NIR broadband

Dielectric Mirrors

Custom wavelength HR

ZnSe Windows

IR-transparent windows

Related Knowledge

How to Choose the Right Optical Mirror

Read article →

Understanding Optical Coatings

Read article →

Laser Optics: Component Selection Guide

Read article →

Spectroscopy Optics Selection Guide

Read article →

Engineering Documentation

The following documentation is available upon request for qualified engineering projects:

📐
Dimensional Drawing

CAD & dimensional specs per your requirements

📊
Material Data Sheet

Material properties, transmission curves & certificates

📈
Coating Performance Curve

Spectrophotometric measurement data

🔍
Inspection Report

Surface quality, flatness, centration & dimensional data

✅
Certificate of Conformance

CoC with full traceability per project requirements

📋
Custom Specification Sheet

Application-specific specification documentation

Documentation availability depends on project scope and order quantity. Request details during RFQ.

Further Reading: Engineering Guides

Deepen your understanding with our engineering guides and application notes:

Optical Coatings Complete Guide Laser Optics Components Guide AR Coating Specification Guide Browse All Knowledge Center Articles Browse All Application Notes

Ordering Information

Price Range
See Quote
Standard Lead Time
Ships within 1 week after payment
Custom Lead Time
Subject to engineering evaluation
MOQ
1 Piece
Samples
Available

Contact us for exact pricing based on your specifications.

Specification Parameters

Typical Specifications shown on this page are standard capabilities. Available Options include alternative materials and coatings. Custom Specifications are available per your drawing. Requirements beyond standard capability are marked Subject to Engineering Review.

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Frequently Asked Questions

What reflectivity can I expect?

Reflectivity depends on the coating: Protected Silver > 97% (400-2000nm), Protected Al > 90% (250-2000nm), Dielectric HR > 99.9% at design wavelength.

What is the laser damage threshold?

LIDT depends on coating type. Dielectric HR coatings typically have the highest LIDT. Specify your laser parameters for proper coating selection.

What substrates are available?

Standard substrates include BK7, UV Fused Silica, and Float Glass. For IR applications, we offer Cu, Mo, and Si substrates.

Can mirrors be used at non-normal incidence?

Yes. Specify the angle of incidence (AOI) for proper coating design. S-polarization and P-polarization have different reflectance at oblique angles.

How should I handle and clean mirrors?

Handle by edges only. Use compressed gas for dust removal. For smudges, use optical-grade cleaning solvents with lint-free wipes. Avoid touching coated surfaces.

What is the lead time for custom mirrors?

Standard catalog mirrors ship within 1-2 weeks, depending on quantity and specifications. Custom-coated mirrors typically require 3-4 weeks, subject to change based on order specifics.

Why gold for IR?

Gold has the highest reflectance of any metal in the infrared, with R > 98% beyond 700nm.

Not Sure Which Specification You Need?

Describe your optical system and our AI Optical Engineer will help identify the right specifications, materials, and coatings for your application.

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Request a Quote

Provide your requirements and our engineering team will respond within 24 hours with a detailed quotation.

TypeReflectivitySubstrateDiameterSurface QualityFlatnessIR RangeProtection
Submit Engineering Request

Have a Custom Requirement?

Upload your drawing or specifications. Our engineering team will review and respond within 24 business hours.

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Related Optical Materials

Learn more about the optical materials available for this product

🟣UV Fused Silica 🔵BK7 ⚫Silicon
View All Materials →