Latest red project

[polishedball]

Going for 1W out of a single 500mw Mitshu, will see. I am thinking since it is rated 1w pulsed, it might just be a temperature thing keeping it from 1Wcw.

Time will tell, but this will be the first attempt, figured some would get a laugh out of it.

[polishedball]

Ok got the build up an running. At 19C TEC cooled this easily made 1W, I conservatively (lol) backed it down to 950mw @1.19A. It has been steady at this for a hour now, gonna burn it in a bit more. This is after optics. I didn't go looking for the top end of the diode as I didn;t want to pop it, but I did go up to 1.15W with no slow down of power gain with current in site.

[slicklasers]

I am running my diodes at .93-.96 amps with no cooling just a big chunk of aluminum and am getting 1.75Watts out of 3 after all the optics, correction and all... They maybe drift 2-4mW... Rock solid

[polishedball]

I am running my diodes at .93-.96 amps with no cooling just a big chunk of aluminum and am getting 1.75Watts out of 3 after all the optics, correction and all... They maybe drift 2-4mW... Rock solid

Just curious how you deal with ambient temp issues then I assume you use these indoors and out, example we have has temps range from 75~103 here in the last 2 weeks. Just would be surprised with a shift in ambient to that degree, that they wouldn;t drift more. Any pics of you setup sounds sweet? I use a dual in my main rig just for redundancy same with the blue. I am building this out just as a beam rail, well i most likely add scanners at the end, but not as worried if a failure were to occur.

[slicklasers]

100lbs of aluminum with 400cfm of fans cooling the underside... I'll be posting some pics of the BEAST up by next week... Just finishing it up now, just aligned 20watts of blue tonight, and on to the red tomorrow.... Should be about 15Watts of 638nm Then the easy part, only 3 greens for 8watts.... lol Then that shoots onto my 6810's for this first gig, then I'll put it on my new 6220's... Go big or go home!~!~!~!~!

[Laserpower]

Hi Sticklasers

Sound interesting. I like to hear what beam spec (mm & mrad) you have from each laser source with your: 20w (445) - 15w (638) - 8w (532) ?
We have two 17W RGB with 6w (532) jenlas 3mm@1mrad - 5w (457) CNI 3mm@1mrad - 5.8w (638) kvant 5x5mm@1.6mrad all full angle, this eyemagic (EMS-4000) 5mm aperture scannerset. But the red souce could we better in beam spec. We did also you 6810P before but they diden't perform the best speed (only 300ms /step) That's also the reasone we invested in the eyemagics.
That also fun to hear that you will make out of you sources. So please tell more about you interesing laser project. :-)

/Poul - mail (at) laserpower.dk

[polishedball]

100lbs of aluminum with 400cfm of fans cooling the underside... I'll be posting some pics of the BEAST up by next week... Just finishing it up now, just aligned 20watts of blue tonight, and on to the red tomorrow.... Should be about 15Watts of 638nm Then the easy part, only 3 greens for 8watts.... lol Then that shoots onto my 6810's for this first gig, then I'll put it on my new 6220's... Go big or go home!~!~!~!~!

Can't wait! thanks

[planters]

100lbs of aluminum with 400cfm of fans cooling the underside... I'll be posting some pics of the BEAST up by next week... Just finishing it up now, just aligned 20watts of blue tonight, and on to the red tomorrow.... Should be about 15Watts of 638nm Then the easy part, only 3 greens for 8watts.... lol Then that shoots onto my 6810's for this first gig, then I'll put it on my new 6220's... Go big or go home!~!~!~!~!

Interesting mix. The powers are all high and that can't be bad. On your earlier post you were getting 1.75W from three diodes. Is this a sub-module of the 15W set up? What are your near and far field spot sizes (I'd prefer that over divergence calculations). What optics set up are you using?

The three greens are an unusual number. How are you combining these?

The problem with high power blues is the trade off of divergence against a a scanner fitting near field spot size. How are you doing this ie collimator/correction combo?

[MIIKKKLLLL]

I can't remember where I read this article, but the idea was simple :

Till now, to keep a good beam divergence with high power laser, the only way was to create a big diameter beam (8-10 mm) resulting in a low speed of scanners (8-12kpps with 16x24mm mirrors).

The revolutionary idea is a lens placed before the scanners, decreasing the beam into a small diameter (but big divergence) and another spherical lens positioned accurately after the scanners recreating the initial beam properties. With this system, you only need standard mirrors => better scanning speed