Just a quick heads up, I just got a copy of this book and it is...AWESOME. It's far and away the most complete and up to date Laser book out there. Do yourself a favor and pick up a copy.
RYA Laser Handbook at APS... http://www.apsltd.com/Tree/d321000/e319612.asp
RYA Laser Handbook at APS... http://www.apsltd.com/Tree/d321000/e319612.asp