From the US Physcis list, can anyone confirm/deny this? Regards Colm Saidlear Date: Thu, 24 Apr 2003 15:32:27 -0500 From: "David J. Keys" <[log in to unmask]> Subject: green lasers our facility is considering green diode lasers. our accelerator engineer = has heard that the green lasers have a shorter life than the red ones. = can anyone confirm/deny this? dave