Exploring White Light Interferometry!

Creating 3D-maps of interfaces using White Light Interferometry (WLI, also known as Coherence Scanning interferometry). Content: 0:00 Intro 1:43 Building a White Light Interferometer 4:39 About spatial coherence 7:11 Observing interference in white light 10:37 Broad-band radiation interference explained in detail 21:11 WLI Microscope Zygo Newview 100 explored 23:16 Measurement examples 25:44 Michelson and Mireau objectives 26:56 Concave spherical mirror surface (measurement) 27:44 Granite surface structure (measurement) 28:47 Etched glass surface (measurement) 29:32 Turned stainless vacuum part surface roughness (measurement)