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CO2 Laser Optics for High-Precision Laser Applications

Fast, precise, powerful: PLEIGER supplies CO2 laser optics for a variety of optical systems and instruments as well as for laser cutting, welding and marking with absolute precision. We develop, design and manufacture CO2 laser mirrors, CO2 laser lenses and complete CO2 laser systems for industrial or medical applications. Our design and manufacturing capabilities cover optics for CO2 lasers from a few watts to several kilowatts output power.

Very low absorption values

Cu/Si/Be/SiC mirrors

Maximum reflection

Cavity and external optics

Cavity Optics

High UV-stability

CO2 Laser Mirror

Our CO2 laser optics product range includes plano mirrors and spherical optics made of silicon, copper, silicon carbide and beryllium. Combined with our high-performance, low-absorption, gold-based coatings, we provide exactly the right CO2 laser mirrors with a wavelength of 10.6 μm for every application.

Our precision CO2 laser optics / total reflectors, for example, are used inside a laser resonator. They are also used outside the laser as deflection mirrors. Internal total reflectors are, for example, rear mirrors, output coupling mirrors or deflection mirrors. Total reflectors are front surface-coated optics for maximum reflectivity. In addition to CO2 laser optics, we also carry scanning mirrors for laser marking, plano mirrors for laser cutting and deflection mirrors for medical instruments.

Learn more about our CO2 laser optics and get advice on possible applications.

CO2 optics
CO2 optics
ZnSe Linsen
ZnSe Linse

CO2 Laser Lens

Besides CO2 laser mirrors, we also manufacture lenses for laser cutting, marking and engraving. Our ZnSe lenses are manufactured according to customer specifications from high-quality material with the lowest absorption values. In combination with an anti-reflective coating, PLEIGER CO2 laser optics enable the focusing of a high-power CO2 laser with excellent precision.

High-power CO2 laser lenses:

  • Standard AR (A < 0.20 %)
  • Low-Absorption AR (A < 0.15 %)

More information on ZnSe lenses

CO2 Laser Mirror Types

Coated copper and silicon substrates are mainly used for the production of our CO2 laser mirrors. We manufacture high-quality reflectors, but we also use aluminium and beryllium. If a particularly high reflection is required, the use of dielectric mirrors is recommended. In certain wave ranges, we achieve reflectivity of up to 99,8% in CO2 laser optics through the dielectric coating. The material used for the production of CO2 laser mirrors depends on the desired application. Copper mirrors, for example, are the ideal choice when maximum laser power is required. Because copper has a very high thermal conductivity, CO2 laser optics made of copper can be used for demanding applications such as laser cutting or laser welding.

Silicon mirrors, on the other hand, are characterised by their high dynamic strength, which is why they are preferably used in scanning systems. In addition, these CO2 laser mirrors feature low material costs and are therefore highly economical.

Different coatings are available depending on the area of application:

  • Protected Gold Broadband coating for low power applications only.
  • Molybdenum
  • Very hard coating for CO2 laser welding.
  • PICO HR
  • High-power coating for laser marking, cutting, drilling.
  • PICO HR DB
  • High-power coating with extended reflection for alignment lasers.
  • PICO HR Resonator
  • High-power coating optimized for CO2 laser resonators. High UV stability.

We manufacture CO2 laser optics from the following materials:

  • Silicon
  • OFHC-Copper
  • Aluminium (AlMgSi1)
  • Beryllium

We produce the following shapes:

  • Plano
  • Spherical
  • Aspherical
  • Toroidal

Ask us for more information!

Do you want to know more about our different CO2 mirror types and which CO2 laser optics are best suited for your application?

Please contact us.

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.

Looking for other optics?
Please see our Optical Mirrors section.

CO2 Laser Lenses for CO2 laser technology and thermography

PLEIGER Laser Optics manufactures CO2 Laser Lenses for laser-based processes such as engraving, cutting, and marking. 

To provide our customers a wide range of applications, our CO2 Laser Lenses are available in various spherical and aspherical shapes. Our optics enable maximum sharpness and resolution of CO2 laser beams. 

Thanks to the extremely low absorption values both in the visible range and in infrared waves, zinc selenide is suitable for numerous laser applications in research and industry. 

Our CO2 laser optics, including CO2 Laser Lenses, are provided with AR coatings, which improve transmission.

Laser mirrors
IR mirrors
IR mirrors
plano mirrors

CO2 Laser Lenses – variants

CO2 Laser Lenses can be used in laser cavities and external beam focussing applications. At PLEIGER Laser Optics, we realize the following lens shapes, among others:

Meniscus lenses: This form of CO2 Laser Lenses is mainly used for laser cutting. It is characterised by a concave-convex surface texture, which minimises errors in beam focusing.

Plano-concave lenses: A wide range of applications, but particularly suitable for long focal lengths.

Cylindrical lenses: This special type of lens imposes a focal line instead of a conventional focal point and can be manufactured for specific applications. 

While other manufacturers use radioactive thorium as a coating material, we use non radioactive materials, to additionally reduce the reflection values of our CO2 Laser Lenses. In this way, we increase product safety and still provide our customers with the highest possible performance.

Applications of CO2 Laser Lenses

For high-power CO2 lasers, only CO2 Laser Lenses with extremely low absorption coefficients are being used. In this way, we exclude overheating and component wear. Typical examples of applications are cutting or marking components in industry. In addition, you can use CO2 Laser Lenses for thermography, where less stringent demands are placed on the materials due to a lower output power. 

We also manufacture optical windows, such as protective windows and Brewster windows, from zinc selenide. Of course, an individual manufacturing service is available for all CO2 Laser Lenses and optics. Our development department will ensure that your specifications are fulfilled precisely – no matter how complex your application.