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FrozenGate by Avery

Cheap, easy power meter?

Chicxulub

Chicxulub

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I'm curious to see if there's a cheap, easy to make power meter setup out there. I don't have super high powered lasers and really don't desire to have anything much over 50mw, so I don't need one of those kickass 1W meters. The only thing I've found that really seems to fit this bill is a Coherent Lasercheck, but I don't want to spend $300 on this. I also imagine that you guys can build something that will do more than the Lasercheck for significantly less anyway.

Is there anything that would fit this criteria?

ps- sorry if this is in the wrong section. This strikes me as a general question though....
 





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My bad Jerry, I don't think I saw that model from the link in your signature. Great to know I have even more options for an LPM.
 
I found this schematic the other day.. though I haven't a clue as how to calibrate it, or get a reading off of it.. some guy named david apparently made it.
 

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that first meter is a good one(120mw) its my first meter i bought i just needed to go higher
so i bought the 1 watt laserbee w/data logging a niccce meter so far my most powerfull unit only gets close to 600 mw lol
 
lasersbee said:
There is an alternative to building a DIY LPM and calibrating it....

http://www.bauer-electron.com/eby/ebayhlpm.htm

You will need to remember that Optical Laser Power Meters like the
LaserCheck and 120mW LPM Module don't like the Blu-Ray 405nm
wavelength...

@k1kb0t... actually... you can get a LaserBee for a lot less than >200...

http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MESOX:IT&item=150349163143

There will be another one put on eBay Monday night...


Jerry
Click to expand...

Do you by any chance have the ability to make a weaker, more sensative power meter, from say .5-200 mW? I'm not into huge power like most of the other guys, I just want to know how strong (or weak, depending on your POV lol) my lasers are...

Nevermind, should have clicked your link first. I see you say that is good from 498- 1050. Is there a correction factor that one can use for 473 and 405, or is it fubar?

That LPM is pretty much right up my alley. :)
 
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That you would need to calculate yourself... we supply a correction chart from
500nm to 1050nm... You could perhaps extrapolate the factor using the chart...
It has been shown that the Blu-Ray LDs are not all putting out the identical
wavelengths and the optical sensor specs are at the lower optical limits below
500nm..
It can measure 405nm but not consistently with different Blu-Ray LDs and
therefor the 500nm to 1050nm specs for the 120mW LPM Module...
I'm quite sure it could do 473nm... that is not far from 500nm...:yh:

Jerry
 
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lasersbee said:
That you would need to calculate yourself... we supply a correction chart from
500nm to 1050nm... You could perhaps extrapolate the factor using the chart...
It has been shown that the Blu-Ray LDs are not all putting out the identical
wavelengths and the optical sensor specs are at the lower optical limits below
500nm..
It can measure 405nm but not consistently with different Blu-Ray LDs and
therefor the 500nm to 1050nm specs for the 120mW LPM Module...
I'm quite sure it could do 473nm... that is not far from 500nm...:yh:

Jerry
Click to expand...


Cool. I'm not entirely sure when, but I intend to get one of those. :)
 
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