SELEM Lost and found

[The_Doctor]

hakzaw1, 'redward' in the sense of 'westward'.

SoulFeast, interesting. I didn't think about that because I had no idea of the degree of shift. Last I heard, the newer blue-green types were very rigid compared to reds, but it does suggest that the shift for high output is in a good direction. Not ideal perhaps yet, but it suggests we won't have to wait as long while inventors figure out ways to extend their methods into more of the green spectrum. And once we have yellow diode lasers it's pretty much all covered. But I'm not taking bets on when..

As to the merits compared to DPSS, I'm totally sold on that, always was. That's why I care about direct output single mode diodes so much.. All kinds of DPSS have come and gone, and I have taken them or left them as I can afford. Mostly left them.

[DrEvil]

I bought a 520 from Laser66 a few months ago. It doesn't look blueish at all to me. In fact the 532 appears to be quite yellowish when sitting next to 520. IMHO, 520 is green while 532 is yellowish-green.

[hakzaw1]

Thanks Dr.E for posting that. At SELEM I demoed the AixiZ 515nm (makes 26mW) to, at the very least, 25 people all together including buffo Bill Benner- Swamidog mariomaster jeffthe00, Dr Sam, Hitekvoop, BradlyJay Steve Roberts and more- I carefully listened to all that they said. And not once did any say they saw it to be bluish. When I get more I will give them their own thread with pics- and power graphs- I will measure the divergence hopefully one of my buyers will have a O-Scope, there was one at SELEM and I regret not asking if they would check one of these out. I hope to get the makers Spec sheet asap

If enough people want it I will test one to death- if so, I will be taking donations to cover the cost of the module. ATM I am unsure about the duty rest cycle and doubt that the heatsink ( if you can call it that) is very efficeint. Poor fit and not much metal , no fins, fan or TEC.

Please advise if you think we would learn more about how robust these are if I add better passive cooling or add a fan, TEC or both. I say this because a I doubt anyone will just use it as it comes.


is there such a thing available as a BSC for green. I have red and blue cubes here & one with no info (could it be a broadband cube?), and just to see try all. I expect that we will soon see lab modules with modulation and higher powers. Of course these green diodes will be spendy for some time- If you want to spend a bunch more and get less LaserLands offers the same diode but bare- no driver-lens or heatsink just the diode IIRC she wants more than $100 but the shipping is FREE!! woot!

personally I will never buy from LL ever again.

If you want one sent ASAP they are listed under 532nm only at aixiz.com .

AixiZ only got 65 of these and i got five to take to SELEM I think Chuck put them at his dot com store like this so 'insiders' would have a better chance of finding them at 85$.


... he could have sold out by now if he wanted- they could have been placed in the 'new items', 'specials' or given a link using 515 instead of 'hidding' them in the 532 section. AixiZ also did NOT list them at EEKbay or Amazon-

you can call in your order and pay with CCard at 1-888 4 AIXIZ 1- the phone will be answered by Chuck or his wife Xia. You *might* get a discount for mentioning that Hak/Len from the forums sent you- no clue ATM how many are still left- I hope a new order has already been sent to China as 60 is not very many. if YOU want to do the testing I will put $5 in the hat and buy one with cash (DONATIONS) and mail it to you just as soon as enough have chipped in on this destructive testing.

If I can pick up more and match as close as possible the price we enjoyed at SELEM I will then start a new thread on these. I am sure you all will like them- best round dot ever compared to DPSS 532 & great beam profile.

hak

[SoulFeast]

The term "Blueish" is technical for the term "blue shift" meaning closer to UV, inversely, "red shift" is closer to IR. "Bluer" meaning it is 514-525nm, closer in the blue spectrum than 532. It does not look "blue" per say.

The diodes from Aixiz are the PL515nm.

Specs from Osram:




Aixiz is the best place to get these (good looking Hak). O-Like has them for #125, other than that, you will not find these diodes anywhere without careful digging. The other popular direct diode green is the one available from DTR (and O-Like for $135). That is the Osram PL520, this one is rated 520nm. One I just built in a gold pen for a customer is on par with my 514.5nm Ar line (through a grating).

However, that was lucky, normally they are around 518nm+ I have another doing about 520, and another doing around 522-23.

The PL520 (common one) has gone through a kill test. The tests here show mA/nm, and mA/mW for two diodes.
http://laserpointerforums.com/f55/gb...und-81496.html

If you want a diode that looks like an argon, get these diodes NOW. The 515 (from Aixiz or O-Like) will do you the best good. I got lucky with the 520 I just built with, I am jealous that I have to part with it. It's honestly teal.

[hakzaw1]

AS the AixiZ 515 IS a different diode AND the only one that is sold,AFAIK, complete with driver and in AixiZ copper module -ready for a (more) proper heat sink & fan IMHO it needs its own test to death so we can come up with an idea of how robust these are and a safe duty/rest cycle.

SO... ignore the spec sheet in post #24- if you go by it you will very likely kill the 515nm diode as it runs on 3.2 vdc and NOT the voltage in the above spec sheet.

I will work towards AixiZ offering 515/520nm lab lasers with both at 12VDC ttl only and analog/ttl with mains power. This may not happen very soon as IMO the prices of these diodes will drop in time.


This 'Murder testing' will be done primarily for the hand held folks at the Pointer Forum. I will see if we can get just the 3.8mm 20mW 515 nm diodes and list them at aixiz.com- & my webstore. I may do a GB on these after the tests are done. Five were sold at SELEM so data from those buyers can also be helpful.

If anyone wants to see any other new items added to the offerings of AixiZ please let me know. I will do lunch with Dr. Chuck next week to discuss adding several new items including galvo scanners from Canton Laserphoto- my limited tests on these show them to be close to DT in quality but priced closer to PTs. CLP provides the scanners for several China Projector makers already so we can enjoy a lower price due to those sales.

I handed over a CLP scanner set to Buffo at SELEM for him to take home and review. So later we will have an expert opinion on these scanners from CLP.

I will post the price list on several speeds after we see Adam's review.
C. Laserphoto lead sales rep Jason is a pleasure to work with, has excellent English skillz and responds quickly to any questions.

IIRC we can get beamer scanners like 12K and 15K complete with show card and amps for less than 70$ plus shipping.

My first (& only) from scratch projector was a mono with the 15K and looking at the test patterns I have concluded that they were very well tuned when delivered.
But, being still somewhat new to galvo scanners my opinion does not mean much.
Jason promises that all will be well turned when shipped.

Since I have no plans to test every set ordered by the GB I think the smartest way would be to have the scanner sets sent directly to each GB buyer. How we will pay for them as a group is TBA. so depending what is ordered and where you live the shipping will vary. Sorry' but I cannot offer much in the way of customer tech support on these other than working with both Jason and the buyer to resolve any issues.

It may be very likely done like most of my other GBs where I collect all the $$ and do one large bank transfer and thus saving every member that fees charged by their banks. IMO the less times shipped and handled the better are the chances they will arrive in good shape. I will request that every set will come with two replacement mirrors.

look for the GB thread in that section soon.




hak ;-)






BTW 'Pei Jian' owner/operator of DT worked a few years for CLP before quitting- taking the galvo designs with him from CLP and starting Dragon Tiger.

[The_Doctor]

IIRC we can get beamer scanners like 12K and 15K complete with show card and amps for less than 70$ plus shipping.

At a price like that I am definitely in. My interest is specific in this case, I'm not looking for speed at this price, but accuracy and repeatability, especially for small motions. No doubt those at their best are specs that command top end prices just like CT6215's do for speed, but if they're good enough to do the sorts of things I have in mind I'll be sure to wax lyrical and helpful about what I find. I don't do PayPal but I'll find a way round that somehow if I don't have any other complications in getting hold of these.

[hakzaw1]

^^^ thanks-DOC
I will see if a set can be sent to you for testing- I have one set here that IIRC are the 15K - I bumped and broke one mirror or i would be asking now if i could send them to you. I think you have experience with gluing a new mirrors in place, so i will see if I can get some new mirrors for the set I have here- I have put maybe a total of MAYBE 30 minutes testing time, so they are basically new. If you like these and want to keep them you can pay just the GB price and I will cover the shipping. if you want to send them back I will cover the postage.

hak

ps
I don't do paypal much either.

[The_Doctor]

An offer I can't refuse. Re mirrors, no, but I did read the WideMove manual on replacing them so I know I can do it if I have to if they're mounted the same way. Do you have pictures or diagrams with measures, so I can think in advance about mounting and such?

[SoulFeast]

It's running off of 3.2V because of the driver.... I run all of my 520's on single diode, because it uses a boost driver, Len... Straight power -> diode is 6.7-8V (8-9V for the 520).

I can say with 99.99% that these are THE SAME DIODE. Nobody else is making these diodes, Aixiz, JUST LIKE O-Like is getting these from Osram. Stop pretending these are some unheard of diode. I have been sourcing this diode since the beginning of the year, I was the first to build with the 520's back on LPF. I know what I am talking about here.

This isn't a new diode, they are NOT the only ones, and this is NOT the only diode of it's kind.

[The_Doctor]

Sounds right to me. I've been reading off-site about these, and the small boost-mode drivers. There's Osram PL515 at 20mW, and Osram PL520 at 50mW, and that's also backed up by UK stock at what was once called Photonic Products Ltd (Seems to have changed name to ProPhotonix who is presumably a good friend of the Gauls with druidic powers). If there was anything else I think they'd have them. (Although the Mitsubishi diodes are strangely absent there..) What they do have is some Opnext 170mW 638nm singlemode diodes that DTR might want to take a look at.