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Much thanks for your advice, I understand it probably did appear that I attempting to play with fire without any knowledge. I am aware of all hazards and would not have taken any action without utmost safety. I have already done projects, including a cnc mill, and edm. This is my next...

You are right 335 is UV, it must be possible though, check this out, REAL homemade Pulse Laser Gun ! in HIGH SPEED ! - YouTube

So has anyone ever made a pulsed laser? Is it possible?

Thanks for doing that test, they also mentioned that a 335 nm IR would be effective on copper, but I don't know what the power requirement for the IR laser.

Well, that is a major disappointment, here I thought it would be possible to make this machine for a reasonable price. Oh well, Thanks for all of your help!

Yeah, you are right, it is a pico second pulsed micromachining system. So you are saying the diode is in kW or are they just using a 2.8 watt diode, and pulsing kW of power into it?

Alright, thanks so much I will try this diode!

Alright, thanks sam, I will give that a try. Yes the copper will be 8 mils thick or 0.2 mm. The beam diameter, is not the issue, it is the wavelength, of in the EM Spectrum.

Thanks for your reply, to my knowledge it does have to be 532 nm, my end goal is to cut/engrave copper. I spoke to a company that makes systems, and they said 532nm 2.8watts, but the system costs a quarter $million. If anyone knows if a different laser would infact work, that would be great...

Hi, I am looking to make a laser cutter, and to cut the metals I want to, I will need a 532nm laser diode, with at least 2.8 watts of power. Can anyone please point me in a direction of where I can get a diode with those specs? Thanks!