Here we go again... another secret project.
Sorry, couldn't resist.
Exactly--here we go again...
The question of course is , Why?
Am sure you can guess, as usually is the case, a "secret"meaning dangerous, reckless, irresponsible, uninformed, uneducated and probably of questionable legality, daydream imagined device and use, typically generated by and 10 to 15 year old mindset----imagined "power".
Nothing to do with anything lasers are used for legitimately, safely, responsibly, and legally, is also a good guess. lol
AlecBlade:
Perhaps you should read/look at the "How to make a Laser Death Ray" web site here:
http://panoptesv.com/SciFi/LaserDeathRay/DeathRay.html
At least would be some education about what lasers can and can do in the real world and the web site has a lot of excellent references and excellent detailed explanations and examples in each category/section.
Whatever you are imaginings about lasers, "burning", and output "power" in imagination are, it would probably be helpful to get a grip on what some of the many real parameters and real considerations are in the real world beyond a few YT "University" videos and a Chinese reseller of factory manufactured lasers available in China at very high retail prices.
For a relatively low cost good quality high output power blue laser, lab type, up to 20W see:
https://www.ultralasers.com/lasers-series.php?cat=6