Today we're doping silicon wafers with a phosphoric acid and a fiber laser. ==== Timeline ==== 0:00 Intro 0:39 I have no idea what I'm doing 1:09 Doping silicon 2:21 Thermal diffusion 3:19 Ion ...

With a 1064nm laser this is about 1000 lines/mm, but there will be a lot of other periodic structures on the surface so a proper, useable grating is not possible. Report comment Reply ...