Gold Coated Concave Mirrors

You are here: Home » Products » Optics » Mirrors » Gold Coated Concave Mirrors

Gold Coated Concave Mirrors

Gold Coated Concave Mirrors from our production deliver high reflectivity (>96%) across mid- to far-infrared wavelengths (800 nm–20 μm), engineered with precision-ground concave surfaces for efficient beam focusing. Designed with durable gold coatings and protective SiO₂ overcoats, they excel in CO₂ laser systems, thermal imaging, and spectroscopy applications. As a china manufacturer, we offer tailored solutions—custom curvature radii, substrate options (BK7, Si, Ge), and coating optimization—to meet specific focusing requirements. Our mirrors undergo rigorous LIDT testing and precision machining (surface flatness λ/4 @633 nm) to ensure reliable performance, supported by fast prototyping and technical expertise.

Availability:



Inquire

Product Description

Product Overview

Gold Coated Concave Mirrors are precision-engineered optical components designed to deliver exceptional reflectivity, durability, and thermal stability across a wide range of industrial, medical, and scientific applications. These mirrors feature a thin layer of gold deposited on a high-quality substrate (such as fused silica or BK7 glass), offering >98% reflectivity in the infrared (IR) spectrum (700 nm to 20 µm) and >95% in the visible range. Their concave shape focuses light to a single point, making them ideal for laser beam shaping, spectroscopy, and high-power laser systems. Whether used in automotive laser welding cells or satellite communication systems, these mirrors are trusted for their reliability in demanding environments.

Parameter Information

Product: Gold Coated Concave Mirrors

Material: Fused Silica/BK7

Clear Aperture: >90%

Diameter Tolerance: +/-0.1mm

Bevel: Break sharp edges

Focal Lenght: 25-2000mm

Flatness (PV): <1/10L@632.8nm

Surface Quality: 10-5

Thickness Tolerance: +/-0.1mm

Features of Gold Coated Concave Mirrors

Ultra-High Reflectivity

Gold coatings provide 99.9% reflectivity at 1064 nm (Nd:YAG laser wavelength), critical for applications like automotive laser welding and industrial cutting.

Enhanced performance in the IR spectrum (700 nm–10 µm) makes them superior to silver or aluminum coatings for thermal imaging and remote sensing.

Thermal and Chemical Stability

Gold’s natural resistance to oxidation ensures long-term performance in high-temperature environments (up to 500°C), making them suitable for CO₂ laser cutting systems and aerospace applications.
Optional protective dielectric layers (e.g., SiO₂) further enhance durability against scratches and environmental contaminants.

Precision Engineering

Customizable parameters include diameter (5 mm–300 mm), focal length (25 mm–2000 mm), and surface quality (λ/10 flatness), tailored for applications like spectroscopic analysis and medical laser devices.
Coatings are applied via ion plating or vacuum deposition to ensure uniform thickness and minimal scattering.

High Laser Damage Threshold

Engineered for high-power lasers, these mirrors withstand >1 MW/cm² at 1064 nm, making them suitable for defense and semiconductor manufacturing.

Applications of Gold Coated Concave Mirrors

Industrial Laser Systems

Laser Welding: 1064 nm gold mirrors optimize energy delivery in automotive and aerospace manufacturing.

Laser Cutting: Heat-resistant designs (e.g., CO₂ laser systems) ensure consistent performance in 24/7 industrial operations.

Medical and Scientific Equipment

Laser Dermatology: 532 nm gold mirrors focus green light for precision skin treatments.

Spectroscopy: 50 mm diameter mirrors enable high-resolution analysis in research labs.

Aerospace and Defense

Satellite Communication: Space-qualified mirrors with gold coatings ensure efficient IR signal reflection in extreme environments.

Military Optics: High-damage-threshold designs support laser targeting and imaging systems.

Semiconductor Manufacturing

Laser Annealing: Gold mirrors focus UV and IR lasers for precision material processing in chip fabrication.

FAQ

How do I choose the right Gold Coated Concave Mirrors for my laser system?

Prioritize wavelength compatibility (e.g., 1064 nm for Nd:YAG lasers) and power requirements. Use our wavelength selector tool to match Gold Coated Concave Mirrors coatings and substrates.

Can Gold Coated Concave Mirrors be cleaned without damaging the coating?

Yes. Use ultrasonic cleaning or nitrogen gas to remove debris. Avoid contact cleaning, as gold is soft and prone to scratches.

What industries benefit most from gold coatings?

Infrared-intensive fields like laser welding, thermal imaging, and astronomy, where gold’s high IR reflectivity outperforms silver or aluminum.

Do you offer custom designs?

Yes. We provide bespoke solutions for size, coating thickness, and cooling channels (e.g., water-cooled mirrors for high-power applications).

How long do gold coatings last?

With proper maintenance, gold coatings retain >98% reflectivity for 5+ years in standard environments. Protective layers extend lifespan in harsh conditions.