Frequently Asked Questions (FAQ)
a) What is the smallest hole diameter you can drill?
Smallest achievable hole size (and largest achievable hole size) is dependent on the material, material thickness and laser used. It is possible to drill 1 micron holes through thin material at aspect ratios of up to 100 to 1. It must be remembered, however, that there will usually be taper associated with the holes and the entrance diameter will be larger than the exit. We normally specify EXIT diameters. As a rule of thumb, the minimum hole diameter achievable with a CO₂ laser is about 50 microns and the minimum achievable with an excimer laser is 2 microns. With the optical setups currently in our lab, the tripled YAG laser can go down to about 20um.