What happens?

[Sesomaru]

i read some post according to laser with potentiometer, wich if you move this potentiometer gradualy, you can increase the output power of the laser. I tried but i lose the green bright, now dont give green bright, it bring to me a poor red light....

i killed the diode? :cryyy:

5MW Green Laser Pointer

it can burn?

i bought twoo new laser, a 100Mw green laser from DX wich i will post my preferences when i receive it.

Thanks.

 

[GBD]

DO NOT stare at that red light.

These diodes emit 808nm light, which is infrared. so while it appears a weak red to the human eye, it is indeed very powerfull light and will damage your eyes if you look at it.

Right now from your pictures, you lack the collimator assembly, all you have is the pump, ND:YVO/KTP assembly and an expanding lens, so even if it works, you will get a very narrow beam output with terrible divergance (not really that worth while if you are looking for a good beam), you need the lens.

But more or less, yes, it is damaged and you might as well get a new one. You did something generally known as "pot modding", it is generally something that is considered an utter waste of time and a waste of a laser here, as you are overating the pump diode and either killing it altogether, or causing it to be damaged and still emit some light (although not enough to do anything to the crystals).
Another thing that might have happened is that you fried the KTP from excess power. either way you go on about it, your module is most likly junk now.

Buy some goggles made for 532nm for your own sake if you are going to play with a 100mw green.

 

[lasersbee]

^^^^ Good advice^^^^

Please... next time... read up on POT MODDING and the potential
problems associated with it and the potential safety risks of 808nm
Lasers or any IR lasers for that matter...

Jerry

 

[Krogith]

You looked into it already didn't you? Hope you didn't cause permanent eye damage trying to see the light coming out of your busted Diode...

 

[Sesomaru]

I didnt look directly to the way to laser light direcction

It is a 532nm laser :S

 

[GBD]

I didnt look directly to the way to laser light direcction

It is a 532nm laser :S

Thats how green lasers work.

It doesn't emit 532nm directly from an electrical input.

Your driver is driving a 808nm diode, which pumps a piece of ND:YVO that then emits 1064nm, finally feeding a KTP crystal that doubles the frequency to 532nm.

Either way, those initial IR component is what appears weak red. and it is very powerfull even in a 5mw output pen (pump can be 200mw-300mw of infrared).

This is a hurry up version of a DPSS laser system, there are many articles about it on this forum and online, search for it yourself if you want more detail.