CO2 optics

CO2 Optics / Mirrors / Reflectors

Pleiger Laseroptik’s precision CO2 optics / total reflectors are used within a laser cavity or external to the laser as bending mirrors. Internal total reflectors are rear mirrors, outcouple mirrors or folding mirrors. Total reflectors are front (first) surface coated optics for maximium reflectivity made of copper or polished silicon.

Our CO2 optic product range includes flat mirrors and spherical optics of silicon, copper, silicon carbide, and beryllium. Combined with our gold-based high-power low absoprtion coatings, we offer precisely the suitable laser mirror for any application with a wavelength of 10.6 μm. Pleiger is your partner for designing, engineering or manufacturing CO2 lasers optics or CO2 laser systems for industrial or medical applications. Our design and manufacturing capability covers optics for CO2 lasers from a few watts to over several kilowatts output power.

Copper Total Reflector

High power CO2 laser mirror for laser cutting, marking and optical instruments and systems.

R > 99,8 % @ AOI 45° s-pol

R > 99,7 % @ AOI 45° p-pol

plano, spherical, aspherical, parabolic, toroid, cylindrical

Download Data Sheet Reflectors

co2 optics optic copper

Silicon Mirror

High power CO2 laser mirror for laser scanning, marking and cutting applications.

R > 99,8 % @ AOI 45° s-pol

R > 99,7 % @ AOI 45° p-pol

plano, spherical, cylindrical

Download Data Sheet Scanning Mirror

co2 mirror

Cavity Mirror

High power CO2 mirror for laser cavities. High UV-stability.

R > 99,8 % @ AOI 0°

Made of Silicon, OFHC-Copper, ZnSe, Germanium

Download Data Sheet Cavity Mirror

The Pleiger Resonator / Cavity optics are designed and manufactured to the highest standards of reflectivity and durability, to preserve laser power and laser mode under the harsh demands of the internal laser cavity or the external industrial operating environment. Our standard laser mirrors are designed to handle CO2 laser power levels up to several kilowatts with proper cooling, mounting and protection.

High damage threshold. Custom designs.

co2 optics

Do you need further information on CO2 laser optics?

Please contact us by phone: +49 2324 398406 or mail.

Mirror standard specifications

Surface Quality:

Scratch-Dig: 40/20 and 20/10*

Figure: 1/40 wave at 10,6 µm

*not applicable for copper diamond turned optics

Dimensional tolerances:

Diameter: +/- 0,1 mm

Thickness: +/- 0,2 mm

Paralleslism: < 3 arc min

Clear aperture: 90 % of diameter


Surface: spherical, aspherical, toroidal, cylindrical

Cooling: internal

Customized CO2 total reflectors

We customize according to specifications and recommend to include the following parameters:

  • Radiant reflectance
  • Allowed level of mechanical stress
  • Angle of incidence
  • State of polarisation of the incident light
  • Diffential phase shift of reflection
  • Laser damage threshold
  • Dimensional tolerances:
  • Clear aperture
  • Substrate material
  • Surface qualitiy
  • Phase shift upon reflection
  • Optical figure


  • Always provide tolerance levels
  • Example: “R to exceed 98 %”

Optics terms

A short introduction to important optical terms according to optics specifications.

Laser damage threshold 

The laser damage threshold (LDT) or laser induced damage threshold (LIDT) is the limit at which an optic or material will be damaged by a laser. LIDT is affected by various parameters including laser wavelength, pulse duration, pulse repetition, frquency, spot size, temporal and spatial profile. Thus  two standards have been developed for testing: ISO 11254-1 and 11254-2.

Optical figure

Peak-to-valley departure (PV) is entrenched in optics design and manufacture as a characterization of an optical figure. After removal of piston and tilt for flats and best fit sphere for spherical surfaces PV is specified as height difference between highest and lowest point from the nominal surface shape.

Clear aperture (CA)

The clear aperture is defined as the part of an optics that must meet the given specifications for e.g. figure and coating. Outside the clear aperture the quality might fail the specifications.

Do you need further information on CO2 optics?

Please contact us by phone: +49 2324 398406 or mail.

Optical Mirrors

Looking for other optics?

Please see our Optical Mirrors section.

Pleiger Laseroptik is a member of the Pleiger Group. More information at

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