Looking for 532nm Diode at 2.8 Watts

[drexaq]

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!

 

[ARG]

Sorry mate, but 532nm diodes don't exist (at the hobbyist level anyway). 520nm diodes do, but you won't be able to get them at 2.8W.

What you need is a DPSS 532nm system. Check out CNI Lasers, Lasever, DHOM lasers, KVANT and Viasho.

Also, does it have to be 532nm? You can get other laser systems in higher powers for less than a 3W 532nm laser system.

 

[SKeeZ]

if you are making a laser cutter why do you need a 532? beam diameter? at 2.8 watts you are probably not cutting anything thick. try a 445 9mm diode from DTR LINK if you focus the beam it will give you a narrower diameter than a green and more power for WAYYYYYYYYYY less money.

 

[drexaq]

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.

Thanks!

 

[SKeeZ]

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.

Thanks!

Wavelength (color) makes just about no difference so 532nm and 445 are essentially the same for engraving. i brought up the point of focus, a green laser (probably why they suggested it) has a small beam diameter while a 445 does not with out focussing it but most 445's are focussable and MUCH less expensive. you will need a green laser ONLY if you are working on X, Y, and Z planes but i don't think you are for engraving. Getting an infrared laser cutter/engraver is also an option. My bigest issue is the "2.8W" that you said was required for engraving. I would think that it would require much more to write in shinny metal. But let me test that with my 2 Watt laser at high focus and a piece of copper for you.

EDIT: 2 Watts at a very fine focus (<.3mm) was not even in the ballpark for engraving pure copper.

 

[drexaq]

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.

 

[drexaq]

Alright, thanks so much I will try this diode!

 

[SKeeZ]

I did a little more research and it appears copper has special properties with green lasers. this will not be possible except with a green laser. it will be astronomically expensive but here is a list of units. everything over 2800mW fits your purpose well: 532 nm green laser.

 

[Things]

2.8W CW of 532nm won't do anything to copper, chances are the system they are talking about is pulsed. It might be capable of 2.8W CW, but pulsed the power can be into the kW levels.

 

[SKeeZ]

You bring up a good point. Ultimatley, 2.8W wont do anything because melting temp of copper is really wher you wanna be if not vaporization temp. Maybe a 28W 532nm, that would explain the 250k pricetag

 

[drexaq]

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?

 

[drexaq]

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!

 

[Things]

Yep, chances are it'll probably be using a flashlamp pumped YAG laser, which will cost thousands on it's own.

 

[cantthinkofone]

Wavelength (color) makes just about no difference so 532nm and 445 are essentially the same for engraving. i brought up the point of focus, a green laser (probably why they suggested it) has a small beam diameter while a 445 does not with out focussing it but most 445's are focussable and MUCH less expensive. you will need a green laser ONLY if you are working on X, Y, and Z planes but i don't think you are for engraving. Getting an infrared laser cutter/engraver is also an option. My bigest issue is the "2.8W" that you said was required for engraving. I would think that it would require much more to write in shinny metal. But let me test that with my 2 Watt laser at high focus and a piece of copper for you.

EDIT: 2 Watts at a very fine focus (<.3mm) was not even in the ballpark for engraving pure copper.

Color does to make a difference. 'nuff said.

 

[drexaq]

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.

 

[drexaq]

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