laser References External links http://www.bext.com/iot-an-old-dream-now-come-true/ http://www.ebu.ch/departments/technical/trev/trev_273-heppinstall.pdf http://www.davidsarnoff.org/kil-chapter03.html http://www.allaboutcircuits.com/vol_3/chpt_13/11.html http://www.harris.com/view_pressrelease.asp?act=lookup&pr_id=2037 http://epaper.kek.jp/p95/ARTICLES/TAQ/TAQ02.PDF Microwave technology Television technology Vacuum tubes