Gold Flat Mirror / TFGS-40C04-2

Gold (Au) coated reflection mirrors have high reflectance over wide infrared range.

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Part Number
TFGS-40C04-2
¥70,000
◦Chromium (Cr) is used as the undercoated to better reinforce the adhesion of gold to the substrate.
◦ Gold mirrors with silicon substrates have higher durability than glass because gold coating adheres much stronger to silicon and has a higher thermal conductivity. (thermal conductivity of silicon is 111 times better compared to glass)
More Information
Catalog Code W3011
RoHS Yes
CE No
Download Product's Datasheet
Guide ▶Please contact our Sales Division for customized products. (customize outer diameter
Attention ▶When silicon mirrors are water-cooled, heat dissipates more quickly and they have higher durability.
▶Since gold coating has an extremely low mechanical strength, extra care should be taken and it is recommended that cleaning of the surface be limited to blowing off the coated surface.
▶Reflectance of the specification are represented by the average of the reflectance of P polarized light and S polarized light.
Specifications
MaterialSingle Silicon crystal
TypeSillcon Circle
CoatingCr (Chromium)+Au(Gold) 
Parallelism<3′
Surface Quality (Scratch-Dig)40−20
Clear apertureCircle of 90% of the diameter or Circle that inscribed in a square of 90% of the dimensions
Laser Damage Threshold1.2kW/cm2 (CW laser)
Optics Sizeφ40mm
Thickness t4mm
Quantity1 piece
Surface Flatness (Wavelegth 632.8nm)λ
Surface Flatness (Convert at 10.6μm)λ/16
Rear surfaceGround