suppose you're thinkin' about a plate o' shrimp. Suddenly someone'll say, like, plate, or shrimp, or plate o' shrimp out of the blue, no explanation. No point in lookin' for one, either. It's all part of a cosmic unconciousness.
Completely. Those beams look TEM00. That's pretty impressive.
If you're the smartest person in the room, then you're in the wrong room.
Wow
I think I found the reason to dump my ions
What is the divergence like on the red and the green and blue?
would you be willing to post a pic or send me a pic in email of a far field image of the RGB beam *spot only* on the wall at 30~ meters / 100~ feet?
Im finally seeing something fantastic diode wise and with quality that's not an OPSL or gas laser.
Thank you.
Nate.
Will there be three phase!!!!
hahaha thanks,well... I suppose beam is a bit fatter on our diode modules than your ions (but not too much..maybe +1,5mm), however you get better modulation and of course improved portability, power consumption, no water...this modules have driver integrated on a really small footprint, just simply apply 12V and modulation and here we go!
Divergence: Many manufacturers say: "X mrad overall divergence" (overal?¿?¿? what crap is it?? we want good RGB overlap at all distances!! Can you tell me mrad/each module sir??...usually no luck, no info). Then, in practice, we find acceptable divergence on green (1,4mrad for example) but horrible reds about 2mrad or more (uncorrected chinese's). So, "good" RGB Overlap is only achieved at certain concrete distance
We have thought about a good compromise between excellent divergence but "small" beam diameter...that fits in popular scanners.
so we have finally setup each module to achieve excellent 0,92mrad (0,92mrad EXACT on each module) on a <5mm beam.
As you can see on below pic, all 3 beams fits well on 5mm beam entry PT-A40 scanners (X=8x10mm Y=7x12mm), so no losses/clips ie all our precious powa goes to audience& having RGB overlap at ALL DISTANCES is a MUST (all beams share the same divergence)
Of course, we can go less then 0,92mrad but with fatter beams (on multimodes and specially reds), and we don't want to sell modules >5mm beam diameter, at these rated powers.
Ok. we'll take some beam spot pics at 30m soon.
Thanks!!
Jordi
Atenlaser.
www.atenlaser.com
Last edited by jors; 07-23-2015 at 01:55.
" 15 characters"
Last edited by Laser Wizardry; 11-13-2015 at 13:53.
1 question how are you achieving 3w red with 4 x 700mw (+optic loss ) i know my math may not be great but that doesn't add up
so its either over driven or under powered both are not good for a laser that cost that much
i would just sell it as a 2.5w and under power them a little
We have talked a lot here on PL about overdriving reds or not, at which temperatures and so on...
Our reds are SAFELY delivering near 1W each, this is 4W overall raw power, +optic losses...3W useful red.
Why we say SAFE at near 1W?? Because our reds are VERY well TEC'd at 18°C and they are pulsed modulated (DAC).
However in our test, we apply CW 5V modulation (Lab PSU), for a worst-case scenario.
Mitsus p73 specs is 500mW with CW modulation at 25°C, but all we know, they can go higher at lower temps, and even more when modulation is pulsed (DACs). We have a general consensus about this here on PL.
So, we can assure, our RED module can safely run at 3w output, with a good life expectance. However, if you're worried about, you can limit module just delivering 2,5W max (which is also nice power!), but as I said, module is perfectly 3W capable with guaranties so its branded as 3W red.
Hope it helps
Jordi
Last edited by jors; 07-23-2015 at 01:57.
At SELEM 2 years ago, PolishedBall (John Murphy) had a single red diode (Mitsubishi 638 nm) that was TEC-cooled. We measured 950 mw at the output, and that was after a set of cylindrical optics.
We ran that laser continuously for several days at SELEM with no problems. John said that he had other rigs where he was pushing a full watt or more out the front end.
Bottom line: with proper TEC cooling, you can get over a watt out of the bare diode, and even after optical losses you can have a full watt of output.
Adam