Silicon mirrors for CO2-laser

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Home >> Products >> Laser Components >> CO2 Laser Optics >> Silicon (Si） mirrors

Silicon (Si） mirrors for CO2-laser

Mirror is an important component in laser processing optical path system, which would reflect light in accordance with the predetermined route and direction. Coated silicon substrates are commonly used as mirrors for CO2 lasers. Its advantages are good durability, thermal stability and relatively low cost. The total reflectors are used as rear reflectors and fold mirrors and externally as beam benders. Silicon mirrors tend to be used by lower power CO2 lasers as flat fold mirrors, and in clean conditions where back spatter and dust will not cause catastrophic failure of the mirrors. Typically a Silicon mirror has 1/10th of the laser damage resistance of a copper based mirror

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Modules or Types
Specifications

Following modules and types of the Molybdenum mirrors are available in stock

Diameter (mm)	Thickness (mm)	Substrate Materials	Reflections at 10.6μm
12	3	Monocrystalline Silicon	R≥99% at λ=10.6μm
18	3	Monocrystalline Silicon	R≥99% at λ=10.6μm
19	3	Monocrystalline Silicon	R≥99% at λ=10.6μm
20	3	Monocrystalline Silicon	R≥99% at λ=10.6μm
25	3	Monocrystalline Silicon	R≥99% at λ=10.6μm
25.4	3	Monocrystalline Silicon	R≥99% at λ=10.6μm
30	3	Monocrystalline Silicon	R≥99% at λ=10.6μm
38.1	5	Monocrystalline Silicon	R≥99% at λ=10.6μm
50.8	7	Monocrystalline Silicon	R≥99% at λ=10.6μm
200	15	Monocrystalline Silicon	R≥99% at λ=10.6μm

Note: Silicon mirrors of other size and specifications are available upon customer’s request.

Related products

Scanning mirrors for CO2 lasers

ZnSe focusing lenses

GaAs focusing lenses

Molybdenu (Mo) mirrors

SPECIFICATIONS
Material	Silicon (Si)
Density, g/cm³	2,33
Surface quality	40-20 scratch & dig (MIL-PRF-13830B)
Clear aperture	>80% of
tolerance	+0.0 -0.2 mm
Thickness tolerance	±0.25 mm
Surface flatness	λ/4 @ 633 nm
Operation wavelength	10.6 µm
Coating	protected gold
Reflectivity for unpolarized radiation	> 99%
Laser damage threshold	4 kW for Ø 10 mm

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Silicon (Si） mirrors for CO2-laser

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Silicon (Si） mirrors for CO2-laser

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