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is there a way for an electronics hobbyist to build a way of measuring laser power output typicaly 100mW
cheaply !!
cheaply !!
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laser power meters
- Thread starter andy_mouse_brown
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andy_mouse_brown said:
Not without having a calibrated meter to compare to, no.
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MarioMaster said:
Not without having a calibrated meter to compare to, no.[/quote]
can't you get those sensors that measure to about 125mw that plug into a multi-meter on ebay for like 25-30 bucks? I can't remember the name but if you know what i'm talking about can you link him for me? thanks
gotwake424
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I'am not looking for accuracy just a basic place to start I mean is it thermal ? I'am sure I once saw an article that described a basic way of measuring output using a photo diode am I going mad?
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Good price 
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Thanks lasersbee thats exactly what i was talking about Could not remember the name for the life of me tho
gotwake424
Could not remember the name for the life of me tho gotwake424
I built benm's thermal power meter (its in a thread somewhere) for perhaps 5$ of parts and just using its self-calibration it seems pretty accurate. Can measure down to 2-5mW and measured a Kryton that kenom had set to 100mW as 103mW. That laser is the only one I have that has actually been tested on a real power meter, but it gives very plausible readings for all my other lasers. It can take 10 minutes+ to calibrate properly though.
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Gotwake424 said:Thanks lasersbee thats exactly what i was talking about
gotwake424
You can instantly measure from 0.1mW to 120mW in .1mW increments...
good for most lasers 500nm to 1050nm (but not Blu-Rays).. and it comes pre-calibrated..
with instructions and an optical correction chart..
Jerry
