What Is The Best Material For Co2 Laser Lens?

The best material for a CO2 laser lens is typically a material that has a high transmittance for the wavelength of the laser, while also being able to withstand the thermal and mechanical stresses caused by the laser beam.

One of the most commonly used materials for CO2 laser lenses is zinc selenide (ZnSe), which has a high transmittance for CO2 laser radiation and is relatively resistant to thermal and mechanical stress. Another material that is often used for CO2 laser lenses is silicon (Si), which has a slightly lower transmittance for CO2 laser radiation but is more resistant to thermal and mechanical stress.

Other materials that can be used for CO2 laser lenses include germanium (Ge), gallium arsenide (GaAs), and sapphire. The choice of material will depend on the specific requirements of the application, such as the desired level of transmittance, the power of the laser beam, and the thermal and mechanical stresses that the lens will be subjected to.