Koshy Mathai is the IMF’s Resident Representative in Sri Lanka. Opinions expressed in articles and other materials are those of the authors; they do not necessarily reflect IMF policy.

Abstract: We use an ultrafast varifocal lens to achieve quasi-simultaneous multi-focal laser marking and scribing of transparent materials. Multiple lines located at different depths in the substrate ...

This is a nicely thought out and designed machine. Assembly and setup was quick and easy - the assembly portion took less than 30 minutes and I didn’t even know what I was doing! The interface with ...