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FrozenGate by Avery

5W c-mount maglite

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maranello551

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Frequency doubled, fiber coupled, adjustably collimated 5W C-mount in a large maglite host...anyone have any input? Possible?
 





Trevor is right, You could power the diode, but unless you're a non-linear optics kind of a guy, It will take you a long time to get your 1W of green out of a doubler in TEM00, and then collimated into a beam just by tinkering.

Not to mention the thermal issues you would run into.

No doubt others have dreamt of something like this, but with all the tinkering laser gurus here, no one has yet been able to make something like a 1W green handheld. Only one manufacturer I know of does it, but not cheaply.

Props for dreaming big though!
 
maranello551 said:
Frequency doubled, fiber coupled, adjustably collimated 5W C-mount in a large maglite host...anyone have any input? Possible?
Click to expand...

So you want to frequency double a diode?
What wavelength?
And what is the fiber for? The doubled output or to correct the diode's beam or...?
:thinking:
 
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i don't care too much about the doubling as long as i have burning power. if i keep it IR how difficult would this be?
 
difficult, but more feasable. Correction optics aren't impossible to use.

You will need a 5W C mount diode at whatever wavelength you prefer. Just make sure it has a built on FAC.

From there, you will need a cylinder lens to correct the rectangular beam into a square. If you use the right lens, you can then go straight to a beam expander so you can focus the thing to where you want.

Co2 has been done before also. See: http://laserpointerforums.com/f43/starwarz-co2-power-47504.html

Fiber coupled diodes would only be effective at centimeters of distance, and if they didn't take tens of amps to be driven.
 
^FAC = Fast Axiz Correction
For a first project it is the way WRONG thing to build IMO. Just get yourself a dvd burner and burn some things, after some experience get yourself goggles for IR AND THEN the laser (after the goggles for godssake). If you are experimenting with frequency doubling for green get goggles for 532nm 808nm and 1064nm (for godssake).
 
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Close, the C is for correction. It changed the divergence to something closer to the slow axis, and that value is still WAY too large to be considered collimated.
 
@Cyparagon
I edited the message, changing from correction, thinking it was collimator lol :rolleyes:
 
Can I ask a related question -

What was your intended approach for heatsink design?

I am the proud owner of a 635nm 300mW C-Mount diode. This build is going to be absolutely over my head, and I'm absolutely thrilled about that :)
 
@rhd
OP: Last Activity: 02-04-2011 03:19 AM
:( IIRC, Kenom makes heatsinks/modules for C-mounts.. you should contact him.
Where did you get 635 C-mount? :thinking:
 
Lol, sorry, no - PM'd Kenom :)

It seemed cheap, relative to anything else I had seen of that power in that wavelength. The PIV curve is really impressive too. They took it up to 1100mA, and got 360mW out of the diodes in testing.

Of course, it's "as-is", so it might not work. Yikes!
 
rhd said:
Can I ask a related question -

What was your intended approach for heatsink design?

I am the proud owner of a 635nm 300mW C-Mount diode. This build is going to be absolutely over my head, and I'm absolutely thrilled about that :)
Click to expand...

You will want to bolt it down to a heat-sink, power it up, and test it before you get it mounted.
Aixiz lenses won't help you with this diode, so you will have to find some optics that work before anything else.

Does this diode have FAC? If so, it will be a little easier to get a decent beam.
My recommendation would be to use 2 elements. A very short FL lens positioned very close to the emitter to tame the raw beam, then a longer FL lens (with a large diameter) to capture as much light as possible. The fatter the beam, the lower your divergence will be. You'll still get a rectangular beam without correction, though.

After that, you will need to design the heat-sink around the optics.
 
One of the challenges is that I have almost zero data on this diode.

Would a FAC be of sufficient size to be visible in the product shot? Or are they tiny? All I have at the moment is the product photo - don't have the diode yet.

In either case, where would be a good place to start hunting for optics?

Cheers
 
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