Perhaps someone may be able to suggest (Windows) software that I could use that allows me to draw experimental set-up schemes on my computer (i.e. include images such as beam splitters, wave plates, PBS’s) without much hassle? Anything that is open-source, perhaps? And easy to use? Otherwise really it’s a use of Paint. Unfortunately Office Visio 2010 doesn’t have any physics diagrams I could use/manipulate.