Old 11-07-2008, 03:51 AM #1
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Default Power

I have heard that green lasers are more powerful than a red laser. If so, then what __mw of green will be equal to a 200mw red laser?


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Old 11-07-2008, 03:54 AM #2
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Default Re: Power

200mW of green = 200mW of red.

The power is the same. The only differences are how sensitive your eyes are to those different wavelengths (green looks brighter mW for mW) and the wavelength absorption of your target (varies based on target color versus laser wavelength)
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Old 11-07-2008, 03:55 AM #3
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Default Re: Power

More powerful in what way ???? Burning or visual in conjunction with say a RGY scanner. This has been discussed so many times here.

If burning, mW = mW.

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Old 11-07-2008, 05:49 AM #4
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Default Re: Power

Quote:
Originally Posted by Hemlock Mike
If burning, mW = mW.
Not specifically. As FrothyChimp said, wavelength absorption plays a large part in this. For example, a blu-ray is able to light white matches at a much lower power than red or green.

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Old 11-07-2008, 09:16 AM #5
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Default Re: Power

Yea but since we are talking about output power, and how powerful a laser is.A 200mW laser has 200mW of power, whether it's green or red. :P
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Old 11-07-2008, 10:14 AM #6
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Default Re: Power

You have, as countless others, mixed up visibility with optical power. The only reason 532nm appears brighter is because our retinas are more sensitive for that wavelength than 650nm. End of story.

Altough I don't blame you, because loads of companies sell green lasers on the internet. Many of them are unexperienced with lasers, and says stuff like "green laser - much more powerful than red laser." Because of this, many people believe that this is the case.

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