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I have 2 JDSU micro blue lasers with 2 power supplies. I know that they match, but dunno how to figure our which is which! The lasers are both prototypes and one of the power supplies is a prototype. Any hints on how to deal with this would be great!
Are they both the same o/p power rating?
If so they will likely have the same power rated pump diode.
Is there a photodetector on the o/p for closed loop brightness control?
If there is the following would be dangerous so do not try. If not...
Assuming the same pinout of the head and the same Peltiers and thermistors used for TE control then the only difference will be the temperature settpoints of the pump diode TEC and the Crystal TEC.
If they are electrically the same then you should be able to mix and match and then go with the combination which gives greatest o/p power after a 5 minute warm-up.
Rgds,
Robin
Get ahold of sam goldwasser @ laserfaq.org, or use the newsgroup alt.lasers
and ask him there, he knows the micro series inside and out and can properly answer your questions.
Steve
congrats on your new buy :) you now have quite a collection of blue laser if I'm not mistaking... about 5 of them?
These make 4 in the non UV range. 5 if you want to count the dead Maxyz 405nm module.
Looking forward to seeing some pics of that Melles Griot unit you bought :)
Yeah, can't wait to get it! Should be a good match with Dual maXYZ's in a RGB!
:eek: What'd you DO??? :confused:Quote:
Originally Posted by Laser Ben
The diode died. Went to an LED failure mode. It was being driven at the max power or even over it and it's life ran out!
Edit!
The lasers are awesome! Both work and they put out well over the rated power! The power supplies had the calibration chip in it with the serial number of the head. Now I just need to make a good cable as I have like 4 halves of the cables.
The FAQ says you can control them with RS232. How do I do this? I know it's a serial port, but once I plug it in, what do I do?
Regards,
Ben
what power are these lasers, are they the two on the right?
Holy crap, I got the Melles Griot unit today. The shipper used WAY too much bubble wrap! The package had at a minimum a foot of buble wrap around it and then a inch or so of foam!
The laser is much larger then I expected! Power supply is the size of a Argon supply. Haven't tested it yet. That's for later!
Yeah the MG units are HUGE. the greens look exactly the same.
This is THE best eBay purchase I have EVER made! Producing 437mW after a 30min warmup! I don't see a hour counter anywhere. But I would say this is new. Not a scuff and all seals are in place!
Sweet. you can connect with a serial cable and read all the stats ( and program the stuff if you really want but if it's doing that good I'd not touch a damn thing.)
do u want to sell it?? ;)
What is the application for having a dual beam like that? Can they be combined? Would be great if the polarization is 90 deg different but probably not. Wasn;t there a trick with two mirrors to rotate polarization? In combination with a cube that could give better results than a collimator....
if i remember right there is a retro fit beam combiner that MG sold as an accessory. Pretty awesome if you can get them combined. I assume its pretty stable too... Awesome buy Ben.
Rob
AFAIK the beams are just split, same as the green MG here http://www.repairfaq.org/sam/mgdbl1.gif
the choice is to either lop off one beam or allow both or recombine them.
split beam is a artifact from the way certain laser manufacturers make thier crystal assemblies. Some of Viasho's lasers are the same way. CNI's are not.
How does the stock MG collimator work? I would assume it is a PBS and a 1/2 Wave plate. I would assume that it takes some adjustment once installed.
Ben,
I saw that you won the Coherent C532-400, did you get it yet?
G
Nah! They won't send me an invoice! I have the money waiting they just need to send me an invoice. I've requested one several times. Honestly, if you want it, send me a PM and we can work something out.
Well that sounds interesting, might be possible. I bought that C532-200 from Casey Stack, but after fixing the electronics problem I figured out it was really a C532-50 only 50 mw! Damn I was pissed. The label on the head was not the original label! I would like to get more power than the Coherent 315's that I have now. I have one thats a C315-150 that's 156mw output. It would be nice if that the one you won did 400mw. Sam G told me that these have been known to have problem though...
//George