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FrozenGate by Avery

Yellow with red/green and dichro

Zom-B

Zom-B

0
Joined
Mar 25, 2008
Messages
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My (wobbly) setup for a yellow beam.

hpim4192.jpg


The mirror is dichromatic for IR, but not ideal for green. I tried to find the narrowest-beam red laser which is slightly powerful an ended up with a tiny brass 5mW 635nm module from DX. I adjust the power of my DX50 green with an external power supply. Actually it is a fail, because I still can see either two beams at the beginning -or- furthur away. The photo is too blurry for this. I used deo spray as beam visualizer.
 





wow! it still looks better than my setup(which was also wobbly-er because it included cigarette packs , mosquito pils, the chunk of hoya glass, nail polish , a shoe box, a pizza box and a q-tip :D)
I don't know how yellow yours looks in reality, mine had a yellow(orange actually because of the dim green) beam for a foot or so, after which the red reached it's waist and started to diverge, but good job! 8-)
 
Beautiful! I'm still waiting for someone to come up with a pointer design which combines a red&green laser, and allows one to control the mix. From red, to yellow to green.
 
Looks nice and yellow to me - I've gotten yellow dots with red and green lasers but never mixed beams.
 
flogged said:
Beautiful! I'm still waiting for someone to come up with a pointer design which combines a red&green laser, and allows one to control the mix. From red, to yellow to green.
Click to expand...

I think the biggest obstacle in that is matching divergence and beam diameter at the same time.If the DX 5mW module was more close to $5 I would happily make it a project.But $17 for a DX 5mW module....I'm too cheap for that ::) All this in hoping that the module has 2 lenses after the KTP.I would cut that up and make both adjustable, then the hard part is over.
 
Cyparagon said:
[quote author=Schrecken_Licht link=1211746347/0#4 date=1211774774]Looks nice and yellow to me - I've gotten yellow dots with red and green lasers but never mixed beams.
Click to expand...

Try using fog.[/quote]
I think she means that she pointed a red and a green laser at a wall at the same spot so the dot would appear yellow.
 
The easiest way to combine beams is to point the lasers into each other's apertures :D Of course you have to be careful with the powerful ones.
 
jamilm9 said:
tiny brass 5mW 635nm

you mean tiny brass 5mW 650nm
Click to expand...
No, definitely 635mn. According to my DIY spectroscope it's <635mn, possibly 630.

Switch said:
The easiest way to combine beams is to point the lasers into each other's apertures :D Of course you have to be careful with the powerful ones.
Click to expand...
I heard this could cause COD because the incoming photons will also bombard the tiny mirror.
 
That's why I said be careful with the powerful ones.Anyway, DX says it's 650nm.But tell us more about your DIY spectroscope, perhaps in a new thread if you have time! :D
 
Zom-B said:
My (wobbly) setup for a yellow beam.

hpim4192.jpg


The mirror is dichromatic for IR, but not ideal for green. I tried to find the narrowest-beam red laser which is slightly powerful an ended up with a tiny brass 5mW 635nm module from DX. I adjust the power of my DX50 green with an external power supply. Actually it is a fail, because I still can see either two beams at the beginning -or- furthur away. The photo is too blurry for this. I used deo spray as beam visualizer.
Click to expand...
(I can use a blu-ray instead of red or green if needed)
I have not bought any parts yet.
It would be greatly appriciated if you sent me a place to buy the dichro(s)
if I need more than one pls show me how it would work.
And what do you think the mw is in green now that they are combined(your laser you posted here)
I've been spending all day yesterday and all day tonight and I think I now know how it works:


xdzZh.jpg



Thanks.
-Twisted
 
"Confusing?" - No. Not until you tried to explain it with the MSpaint sketch from hell, anyway :( I gotta say, that's probably the most terrible diagram I've ever seen.
 
Cyparagon said:
"Confusing?" - No. Not until you tried to explain it with the MSpaint sketch from hell, anyway :( I gotta say, that's probably the most terrible diagram I've ever seen.
Click to expand...

My first time writing a diagram and using gimp image editor.
I was asking if thats how it works. :spank:
 
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