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What would be the *strength* of this laser?

Hap

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Hello,

I have a 532nm Laser, which cost me about $123, It says (Power Output <2000mW), I have asked before and have been told a 2W Green laser as a handheld is almost immpossible.

I cannot afford a LaserBee Product, but when I do shine it inside a room(during the day) I can see the beam. I MAKE SURE, NOBODY CAN GET HIT/SEE THE BEAM/DOT(IM CAREFUL).

I haven't tried burning with it, would this be maybe 500mW? When I compare it to my 50mW it completely cover's the dot.

Thank you,

Alex.
 

Things

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Yes, it may be 500mW, it could also be 400mW, 300mW, 200mW, 100mW, 50mW.

There is no way to tell without a LPM.
 
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DJNY

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You can for sure estimate the minimum mW it could be. Do you have safety glasses? Is your laser focusable? A focusable 70mW 532nm laser should be able to light a black matchhead within 2sec, a non focusable should need around 120mW to light a black matchhead.
 

Blaster

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Point it at your arm keep safe use glasses and don't move it at all most important , if it stings straight away its around 200mw assuming the beam isn't sprayed all over the place and is fairly sharp no blob on a wall at 20 feet at the spot ...if a few seconds 125mW, if 10 seconds and only gets warm around 50 to 100 mW i done basic tests on my greens with my LPM and that's what i have found
 
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Livinloud

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You can send it to someone with a LPM and they can meter it for you to let you know. I just metered a members laser, got it thursday, metered it thurs night and sent it back to them fri at lunch
 

hwang21

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Best method is always a LPM... but using burning tests and such MAY be effective for a rough estimate. I'm not saying it will, but it just might. Follow the instructions above and see what you get
 

Livinloud

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burning tests only show how well you can focus a beam. a 100mW 532nm not focused properly wont do a thing but yet a 40mW 532nm focused perfectly will light a match with ease. In the end a LPM is the only way to tell. I have a 400mW 532nm and when its not focused, it wont light a match even though its 400mW
 

hwang21

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Fair point. If you have a 2mm beam diameter though and you focus/expand the dot to that size (roughly) then you can guesstimate it. At least it would be enough to tell the difference between 50mW and 200mW
 

Blaster

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All my feel it tests ,were for average divergance beams, just to give a ball park figure of course a LPM is the only real way to accurate results. I used my feel it sting tests against the results on my LPM, if you want a ball park figure on comparing 50 to 100 to 125 to 200ish mW power these will be good enough, of course the beam density ie focus makes a huge difference so it will only ever be a ball park figure, just trying to help
 
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hwang21

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Same here. Obviously nothing can match the accuracy of an LPM, but the difference between 50mW and 200mW can be "felt" at least to me
 

Hap

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Do any of you guys have a good site where I can buy a LPM?

Thanks!
 




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