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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
PLEIGER Laser Optics is a leading company in the field of CO2 laser optics. Our CO2 laser optics are used worldwide in industry and research. With our high-performance components, we support innovation across all industries.
CO2 lasers are used, among other things, to engrave precious stones or marble. Some of these objects are rare, unique specimens with a high value. With brittle inorganic materials such as jade, agate or slate, the risk of breakage must be considered. Our CO2 laser optics guarantee precise process techniques without damaging materials.
We can produce CO2 laser optics according to your exact specifications. In addition to materials such as silicon, beryllium or zinc selenide, the coating is crucial.
With our coating service, we make CO2 laser optics as user-friendly as possible. Whether in measuring devices or in industrial lasers – thanks to the coating, the CO2 laser mirrors and windows are protected against environmental influences. This assures you of the best performance values and smooth processes in your application. At the same time, you can handle the CO2 laser optics more easily.
Medical technology uses our CO2 laser optics in various areas. The safe use of the laser is directly related to patient welfare. The treatment of the retina is one of the best-known examples of CO2 lasers in medical procedures. So-called no-touch interventions in neurosurgery thanks to CO2 lasers exclude human risk factors that are unavoidable when working with a scalpel.
We at PLEIGER have decades of experience in various high-tech sectors. The development of our CO2 laser optics reflects the principles of our business: constant willingness to innovate and absolute reliability in the interests of our customers.
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.
Our CO2 laser optics are ideally suited to the harsh conditions inside gas laser units.
Learn more about our CO2 laser optics and get advice on possible applications.
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.
Especially when you use CO2 laser optics in deflection units outside the laser, the aspect of material interactions becomes more important.
High-power CO2 laser lenses:
- Standard AR (A < 0.20 %)
- Low-Absorption AR (A < 0.15 %)
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.
- 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.
- Silicon
- OFHC-Copper
- Aluminium (AlMgSi1)
- Beryllium
- Plano
- Spherical
- Aspherical
- Toroidal
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.
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.
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.
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.
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.
CO2 laser optics – silicon and copper reflectors, CO2 Laser Lenses
CO2 Laser Lenses – material properties of zinc selenide
CO2 laser optics – silicon and copper reflectors, CO2 Laser Lenses
Our optics are specifically optimised for the harsh conditions in industrial environments. This applies to the laser mirrors as well as the transmissive laser lenses.
While resonator mirrors ensure constant laser power, CO2 Laser Lenses allow beam focusing and beam shaping to meet the technical requirements of your production.
We have decades of experience in the field of laser optics. With our product range, we cover all relevant processes in which lasers are used – in optical measurement technology and in laser marking.
CO2 Laser Lenses, for example in convex-concave or plano-concave form, serve you for precise engraving processes or markings on components made of metal or plastic.
The mirrors and lenses can be adapted to specific wavelength ranges. For this purpose, innovative coatings and high-performance materials are provided by PLEIGER Laser Optics.
CO2 Laser Lenses – material properties of zinc selenide
If light has to be directed through a medium, factors such as absorption, scattering, and reflection play a key role. The lower the values of a material regarding the mentioned values, the more effective a lens can be used in laser optics.
CO2 Laser Lenses are transparent to wavelengths in the infrared spectrum. This means that absorption and refraction are extremely low.
Up to a wavelength range of 15 μm, the transmission coefficient is extraordinarily stable. Generally, the transmission range of Znse is between 0.5 – 22 μm.
In addition, CO2 Laser Lenses are resistant to environmental influences and are safe when handled properly.
For heat measurement applications that operate exclusively in the infrared range, our silicon lenses are an alternative. These are extremely durable and, with a transmission range of 2 – 8 μm, are also suitable for IR cameras.
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.
In addition to classical processing methods such as cutting, engraving and marking, you can also use CO2 laser optics for combined processes.
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.
Do you have any questions about our CO2 laser optics, or are you unsure which optics are recommended in the context of your application? We would be pleased to advise you personally on our products.