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Old 11-21-2011, 08:14 AM #1
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Default About Magenta Beam

Hi guys!

I'm new to these forums so I say hi before I make my post.

I want to set up a laser with a pink/magenta beam, and I have a few questions which I think was not addressed in other threads.

So to make such a beam I have to combine red with either blue (445-450 nm) or violet (405 nm) at dichroic mirrors. Most people in the forums say they used violet. But what sort of difference does it make if I use blue instead of violet?
I donít have either the blue or violet modules to try it out myself, so thatís why Iím asking to know what kind of difference it would make to the resultant beam...

Also, donít we have to mix red and blue/violet in a specific ratio (more red than blue/violet)? Do we need the two modules to have the same optical output power?

Cheers,

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Old 11-29-2011, 10:34 PM #2
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Default Re: About Magenta Beam

From my searching/asking people have told me X 2 red.

For example 100mw (405,405) you need 200mw red.........


I'm in the process of the same build myself so correct me if I'm wrong anyone!!!!
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Old 11-30-2011, 06:36 AM #3
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Default Re: About Magenta Beam

I'd go with blue. Violet is not as visible to the eyes as blue.
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Old 11-30-2011, 07:35 AM #4
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Default Re: About Magenta Beam

But when combining red with blue, the 405 and 660 would both be single-mode and therefor yeild better results than 445 since they both have the same beam-specs.
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Old 11-30-2011, 07:50 AM #5
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Default Re: About Magenta Beam

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Originally Posted by LaZeRz View Post
But when combining red with blue, the 405 and 660 would both be single-mode and therefor yeild better results than 445 since they both have the same beam-specs.
Well noted and yes you will need 100mW 405 and about 200mW 660 red
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Old 12-04-2011, 05:56 AM #6
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Default Re: About Magenta Beam

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Well noted and yes you will need 100mW 405 and about 200mW 660 red
Couldn't you go with 40mW red and 20mW violet? Do we really need high powers for this? Because that seems like too much heat if you want it to operate in cw mode for a long time.
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Old 12-04-2011, 06:12 AM #7
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Default Re: About Magenta Beam

um violet IMO is less visible than red
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Old 12-04-2011, 01:52 PM #8
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Default Re: About Magenta Beam

IMO, 405nm makes a pretty damn amazing magenta colour when mixed with red!
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Old 12-04-2011, 02:50 PM #9
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Default Re: About Magenta Beam

From my reading of others experiments, the 405nm, though not as bright, does make a nicer color of magenta.

Really you can get magenta from 445nm(it is blue after all) but like LaZerZ said they both the 405nm and 660nm have similar beam specs which seems to make a difference in combining the two.

For the flip side of the 445/405nm coin here is RHD's nice looking build.
http://laserpointerforums.com/f42/diy-pink-magenta-tec-cooled-labby-65579.html
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Old 12-05-2011, 02:53 PM #10
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Default Re: About Magenta Beam

How about using one of the new 450nm single mode diodes?
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Old 12-05-2011, 03:29 PM #11
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Default Re: About Magenta Beam

Quote:
Originally Posted by midias View Post
How about using one of the new 450nm single mode diodes?
I would think that would work great!

Let's see some pics
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