Options on Red - Please Read

[krazer]

I actually have one of these diodes which I tested about a year ago, the results are summarized below:

1. They are power hogs, it takes ~500ma to get the 250mw output at 25C (measured without any lens, strait into the scientech 362)
2. They are very sensitive to temperature, running at 35c gives almost 1/2 power. A tec would be a must for any real application.
3. The beam, while not great, is not terrible. Using one of the triple lens collimators that Junktronix sells I was able to get a beam that measured .06in x 0.62in at 10m from a beam 0.045" by 0.2" out of the collimator. I have not tried using a prism set up with them, but they should match quite nicely with the new 445nm blues.

The reason they didn't catch on last year is that people were spoiled with the round beams associated with dpss, and after seeing beam specs like there wasn't much interest. Amazing how times change

Attached is a picture of the beam at 10m, ~90% of the power is in the central line, but my camera was saturated even with the laser running just above threshold (the background is a white wall under sunlight!) so the overspray shows up more than it should.

[andy_con]

Combining 2 150mW optnext diodes, will give you a better beam and higher power at similar costs.

i take your point but these will half the footprint of a module

[andy_con]

I actually have one of these diodes which I tested about a year ago, the results are summarized below:

1. They are power hogs, it takes ~500ma to get the 250mw output at 25C (measured without any lens, strait into the scientech 362)
2. They are very sensitive to temperature, running at 35c gives almost 1/2 power. A tec would be a must for any real application.
3. The beam, while not great, is not terrible. Using one of the triple lens collimators that Junktronix sells I was able to get a beam that measured .06in x 0.62in at 10m from a beam 0.045" by 0.2" out of the collimator. I have not tried using a prism set up with them, but they should match quite nicely with the new 445nm blues.

The reason they didn't catch on last year is that people were spoiled with the round beams associated with dpss, and after seeing beam specs like there wasn't much interest. Amazing how times change

Attached is a picture of the beam at 10m, ~90% of the power is in the central line, but my camera was saturated even with the laser running just above threshold (the background is a white wall under sunlight!) so the overspray shows up more than it should.

and in mm that is?

[tocket]

As I see it Opnext HL6385DG is still king of the hill when it comes to laser show applications. Great diode! Only drawback is the relatively low power.

[mccarrot]

i take your point but these will half the footprint of a module

A small footprint is more a case of your skills...

The guts of these 650mW 640nm modules from live-lasersystems are build in a box smaller than 50x60mm

http://www.live-lasersystems.at/down...tt_lrrm650.pdf

and our new 3W 445nm modules only have a footprint of 40x70mm

[andy_con]

A small footprint is more a case of your skills...

The guts of these 650mW 640nm modules from live-lasersystems are build in a box smaller than 50x60mm

http://www.live-lasersystems.at/down...tt_lrrm650.pdf

and our new 3W 445nm modules only have a footprint of 40x70mm

yes and no, 650mw isnt that great to be honest, i want 2watts

[mccarrot]

We also supply the 1.3W version with a footprint of 132mm x 56mm 1:50 polarized.
So with a PBS you can have 2,6W at a 132x112mm footprint.

[andy_con]

and let me guess i need a load to pay for them?

[mccarrot]

Well thats the easiest way, but i'm just showing you a small build with 150mW diodes is possible.

[andy_con]

ok cheers .