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Upgrade Mirror 20mm & Lense 18mm Kit GOLD COATED X700

£100.00 £90.00

Upgrading your optics is a great low cost method of gaining lost power from your machine. Our gold coated mirrors boast 99.6% reflection at the 10.6um wavelength. Combined with a Prism grade ZnSe for the highest transmission of laser tube power.

Contaminated mirrors will reduce the reflectivity of mirror resulting in power loss. Secondary problems are caused by the mirror absorbing the laser energy; this causes the mirrors to heat up. In extreme cases this can cause the mirror to distort, warp or even crack.

Contaminated optics Contamination due to foreign materials on the optic’s surface includes dust, oil, grease, fingerprints, and hydrocarbons. These contaminants, if deposited on the optic’s surface, may lead to absorption and shorten optic lifespans and efficiency. Localized heating, caused by contamination, can lead to “thermal runaway” in high-power laser optics. High temperatures create an increase in free carriers within the bulk material which increases absorption. This process reaches an avalanche state, and thermal runaway commences at > 50° C for Ge, and > 200° C for ZnSe and GaAs.Surface.

 

Description

Upgrading your optics is a great low cost method of gaining lost power from your machine. Our gold coated mirrors boast 99.6% reflection at the 10.6um wavelength. Combined with a Prism grade ZnSe for the highest transmission of laser tube power.

Contaminated mirrors will reduce the reflectivity of mirror resulting in power loss. Secondary problems are caused by the mirror absorbing the laser energy; this causes the mirrors to heat up. In extreme cases this can cause the mirror to distort, warp or even crack.

Contaminated optics Contamination due to foreign materials on the optic’s surface includes dust, oil, grease, fingerprints, and hydrocarbons. These contaminants, if deposited on the optic’s surface, may lead to absorption and shorten optic lifespans and efficiency. Localized heating, caused by contamination, can lead to “thermal runaway” in high-power laser optics. High temperatures create an increase in free carriers within the bulk material which increases absorption. This process reaches an avalanche state, and thermal runaway commences at > 50° C for Ge, and > 200° C for ZnSe and GaAs.Surface.


Zinc Selenide (ZnSe) Prism Grade

Optical Properties
Bulk Absorption Coefficient @ 10.6µm ≤ 0.0005 cm-1
Temperature Change of Refractive Index @ 10.6µm 61 x 10-6/°C
Refractive Index Inhomogeneity @ 632.8 nm < 3 x 10-6

 

Specifications Standards
Effective Focal Length (EFL) Tolerance 50.8mm ±2%
Dimensional Tolerance Diameter: 18mm +0.000”-0.005”
Thickness:3mm  ±0.010”
Edge Thickness Variation (ETV) <= 0.002”
Clear Aperture (polished) 90% of diameter
Surface Figure at 0.63µm Plano: 1 fringe Power
1/2 fringe IrregularityRadius: varies depending upon radius
Scratch-Dig 20-10
AR Coating Reflectivity per Surface at 10.6µm <= 0.20%

 

For proper performance with a plano-convex lens, the curved surface should face toward the incoming collimated beam or the longer conjugate distance (the object and image distances together are referred to as the conjugate distance).

Gold Plated SI/LR.TP Mirror Medical Grade

Specifications Standards
Dimensional Tolerance Diameter:20mm +0.000”-0.005”
Thickness: 3mm ±0.010”
Edge Thickness Variation (ETV) <= 0.002”
Coated (@) 10.6um
Surface Material Side 1 PO/TR

Side 2 FG/UC

PLEASE MEASURE YOUR MIRROR AND LENSE TO ENSURE THIS ITEM IS THE CORRECT FITMENT.

Additional information

Weight 0.5 kg
Dimensions 15 x 15 x 5 cm

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