Sometimes a high power infra red laser needs to have its power attenuated, or have strongly diverging modes removed from the beam. At Laser Beam Products we manufacture mirrors with precision through holes or with sharp knife edges that are very cost effective, even when made to your design as a one-off prototype.
We usually advise customers that the length of the hole is no more than the hole diameter, to avoid having a “tunnel” with an aperture at either end. We can make tapered holes to avoid this problem. Because our Gold coating is applied electrochemically the internal bore of any hole is also Gold coated.If an acousto-optic modulator (AOM) is being used, a reflective aperture can be used to manipulate one of the beam orders to be reflected and the other to be transmitted. We can make through holes as small as 1 mm diameter very accurately.