Old 01-09-2010, 12:55 AM #1
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Default In love

Just got my new Rayfoss laser today. Faona said that the tests they ran got it at around 420mW. I think I'm in love.

Does anyone know where I can get a pretty cheap power meter? I realized after I got this that it would be really handy to compare all the lasers I own.

Thanks!


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Old 01-09-2010, 01:16 AM #2
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Default Re: In love

If you have a digital multi meter buy one of Lasersbee's $53 power meter's that hooks up to a DMM. It only goes up to 350mW but if you buy an ND filter for <$20 it can measure higher.

I would recommend a filter with an optical density of .6 (also called an ND4 filter), it would only allow 1/4 the amount of light your laser is lasing, increasing the meters range to 800 mW.

Thorlabs.com - Absorptive Neutral Density Filters

It's not as accurate as his thermopile meters but much cheaper.
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Old 01-09-2010, 01:21 AM #3
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Default Re: In love

Quote:
Originally Posted by ZRTMWA View Post
If you have a digital multi meter buy one of Lasersbee's $53 power meter's that hooks up to a DMM. It only goes up to 350mW but if you buy an ND filter for <$20 it can measure higher.

I would recommend a filter with an optical density of .6 (also called an ND4 filter), it would only allow 1/4 the amount of light your laser is lasing, increasing the meters range to 800 mW.

Thorlabs.com - Absorptive Neutral Density Filters

It's not as accurate as his thermopile meters but much cheaper.
Thanks I'll check that out!
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Old 01-09-2010, 01:30 AM #4
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Default Re: In love

I'd recommend saving your pennies for a good thermal meter, such as a Kenometer or Laserbee I. A laser power meter is an invaluable tool for the laser hobbyist, so I suggest getting a good one

Optical power meters require conversion factors to get a proper reading on all wavelenths but the calibration wavelength. The sensors are small so the laser has to hit spot on. The sensors can also be largely affected by IR light. Even the Coherent Lasercheck (a >$300 purchase) can be skewed terribly by IR leaking from a green laser.

Also keep an eye out - the new series of Kenometers are just about done, I'll probably be posting a teaser thread in the next few days.
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Old 01-09-2010, 01:34 AM #5
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Default Re: In love

Quote:
Originally Posted by MarioMaster View Post
I'd recommend saving your pennies for a good thermal meter, such as a Kenometer or Laserbee I. A laser power meter is an invaluable tool for the laser hobbyist, so I suggest getting a good one

Optical power meters require conversion factors to get a proper reading on all wavelenths but the calibration wavelength. The sensors are small so the laser has to hit spot on. The sensors can also be largely affected by IR light. Even the Coherent Lasercheck (a >$300 purchase) can be skewed terribly by IR leaking from a green laser.

Also keep an eye out - the new series of Kenometers are just about done, I'll probably be posting a teaser thread in the next few days.
I havent heard of a Kenometer so I'll check them out too. And yeah I made sure that the laser is filtered. I didn't know that the IR messes with the sensors though. Thanks for your help!
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Wanna know how computing devices work and why processor speed isn't that important? Click here!

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Like these competitions? Wanna see cooler prizes? --> DONATE! <--

535mW 635nm Laser
5mW Green Laser Pointer
500mW Viasho 532nm (Peak: 708mW!!)(TO SEE... CLICK ME!)
1W 445nm Custom
5mW Blu-ray Laser Pointer

Once owned.........
1576mW 532nm Lab Laser (TO SEE... CLICK ME!)
50mW Argon
555mW 12x Blu-Ray in IgorT host and upgrade by Daguin (TO SEE... CLICK ME!)


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Old 01-09-2010, 02:33 AM #6
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Default Re: In love

Or check the B/S/T section quick before these sell!!!

http://laserpointerforums.com/f39/tw...eap-46959.html
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