Detection Device For Laser Beam Focus
Original Publication Date: 1979-Oct-01
Included in the Prior Art Database: 2005-Feb-20
An easy-to-use, simple device for detecting the location and shape of a laser beam focus, for example, of a pulsed high-power infrared laser used for machining purposes, consists of detector 1 arranged behind rotating disk 2 with parallel slits 3. The slit width is greater than the beam diameter near focus F.