Precision pinholes are small round optical apertures that can be used for laser alignment, diffraction experiments or imaging applications. Pinholes are precisely formed in vacuum by chemical etching of 4 µm kovar foil. The use of an ultra-thin substrate minimizes laser power loss.
Pinhole foil is mounted in a Ø25 mm black metal housing. To minimize spatial intensity variations, we recommend using precision pinholes with precision spatial filter system 990-1000.