So-called protective windows are the last optics to be used before the working area; they protect high quality laser optics from material splatter. Yutai optics can produce protective windows.

The windows are coated with an anti-reflex coating for the laser beam and, upon request, can also be AR coated for the pilot laser in the visible wavelength range.

• BK7 or similar for the simplest application
• Quartz glass for lasers with higher output power

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