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Exit windows

Keeping your eyes safe - our protective laser exit windows

Laser exit windows from plastic for Nd:YAG lasers (1064 nm)

Order No. Size [mm]
000080-1569.728 Ø 27±0,5 x 1,7±0,2
000080-1569.730 Ø 30±0,5 x 1,7±0,2
000080-1569.738 Ø 38±0,5 x 1,7±0,2
000080-1569.750 Ø 50±0,5 x 1,7±0,2
000080-1569.755 Ø 55±0,5 x 1,7±0,2
000080-1569.740 Ø 65±0,5 x 1,7±0,2
000080-1569.757 Ø 70±0,5 x 1,7±0,2
000080-1569.765 Ø 75±0,5 x 1,7±0,2
000080-1569.773 Ø 80±0,5 x 1,7±0,2
000080-1569.795 Ø 95,5±0,5 x 1,7±0,2
Other diameters (range 25-95 mm) or optimisation for other wavelengths (e.g. diode laser) on demand.


Plastic windows to protect high quality laser optics from welding spatters or to protect robot sensors (control eye).

Up to a power density of 0,5 MW/m² the time of operation is considerably longer than of exit windows from glass or quartz. Hot welding spatters do not adhere, but vaporize window material without residue (Leidenfrosts phenomenon). Therefore the window remains longer transparent.

The maximum tolerable power density is 1 MW/m².

Laser exit windows from uncoated plastic for Nd:YAG-diode

Order No. Size [mm]
000080-1569.712 Ø 12±0,5 x 1,7±0,2
000000-1012.473 Ø 50,8±0,5 x 1,7±0,2
000079-1569.740 Ø 65±0,5 x 1,7±0,2
000079-1569.795 Ø 95,5±0,5 x 1,7±0,2
Other diameters (range 20-95 mm) on demand.


The cost-effective alternative to one-side coated plastic windows.

The maximum tolerable power density is 1 MW/m².

Laser exit windows from glass for Nd:YAG lasers (1064nm)

Order No. Size [mm]
000000-1012.468 Ø 55±0,5 x 1,1±0,2
000000-1012.473 Ø 65±0,5 x 1,1±0,2
Other diameters (range 20-80 mm) or optimisation for other wavelengths (e.g. diode laser) on demand.


Due to a coating on both sides the minimal spectral transmission at the nominal wavelength is 99,5%.

For power density >1 MW/m².

FAQs – frequently asked questions

There are four different laser operating modes: continuous wave D, pulse I, giant pulse R and ultra-short pulse M. The distinction is made by the duration of the radiation and the pulse duration. The reason for the distinction is that the interaction between laser radiation and matter depends not only on the wavelength, but also on the irradiance and the duration of action.

A laser is an arrangement in which a so-called pump delivers energy to the laser medium so that its electrons are transported to a higher energy level and the increase in energy can be called up again in a targeted manner. If the electrons fall back in an orderly manner to a lower energy level, the energy difference can be released in the form of photons. If this process is implemented in a resonator as an amplification process, the photon stream can achieve very high power densities. The laser is often referred to as an overdriven amplifier, which turns it into a transmitter; hence the name laser oscillator.

Offenhäuser + Berger GmbH
Meeboldstrasse 30
89522 Heidenheim, GERMANY

Phone +49 (0) 7321 480615
Fax +49 (0) 7321 480616

created by: krähativ design, advertising agency Heidenheim, GERMANY –