DTR's Laser Shop: Diodes-Drivers-Lenses-LEDs & More

[DTR]

do you have a proper spec sheet to go with these?

I have asked but the feeling I get is we will have to come up with our own data on them.

[andy_con]

bugger...

its a shame you spend a large amount of money with a company and they cant even provide you with a spec sheet. you wouldn't buy a car or PC without knowing the spec's

[DTR]

Well like the 445's we are not getting them from the manufacturer and from what I understand it is more of a favore supplying them to us than a business proposition. We figured it all out with the 445's on our own and I am sure we will here as well. It is either that or ignore 5W of 650nm in a single diode.

Anyway what we know for sure so far is.

5W at 20C at a MAX current 5.6A
The Emitter is 100um
Threshold current is 800mA

[steve-o]

.. and the exact wavelength is ?? If it was 638-640-ish I may be willing to drop $425 on a diode, but 650nm .. just dunno yet .. If they run hot it may topple upwards toward 655-660 which is too dim for me imho. Of course we may be able to do some planters-style chilling, maybe with multiple TECs and get a lovely 5W of 635 which would be just totally unreal, .. anybody over on lpf done any lens testing or cooling experiments with these yet DTR?

[DTR]

Not yet but Angelos has a spectrometer coming. I ran mine quite a few times for more than 10 minutes at a time just bolted to a M140 diode block sink and the block only got a little warm and it was still insanely bright.

[logsquared]

Have the raw beam divergences (FA and SA) been determined at max current?

[Displaser]

I may be willing to drop $425 on a diode, but 650nm .. just dunno yet .. If they run hot it may topple upwards toward 655-660 which is too dim for me imho.

Steve-o,

We were all paying that much (or more) for dual Maxi and PBS setup for 1/10 of the power at 660nm just a few years back. Even if the beam profile leaves a little to be desired, it has some great potential on a beam table.

We're all spoiled by these inexpensive photons...

Greg

[steve-o]

Steve-o,

We were all paying that much (or more) for dual Maxi and PBS setup for 1/10 of the power at 660nm just a few years back. Even if the beam profile leaves a little to be desired, it has some great potential on a beam table.

We're all spoiled by these inexpensive photons...

Greg

The dual Maxyz were that expensive? .. I had forgotten ..

[DTR]

Moved to new thread.
http://www.photonlexicon.com/forums/...644#post267644

[DogP]

First of all, I ordered some stuff from DTR about a week ago, and was very satisfied with the whole transaction (quick responses to questions, great prices, quick shipping, etc). But I'm sure you all know that by now.

I just wanted to drop a quick comment in here on the fans DTR is selling. Those are REALLY awesome, and WAY cheap. Of course I only needed a few of each type, but $19 for 18x 40mm fans, and $15 for 10x 60mm fans... I wasn't gonna complain about the minimum qty (I'd end up paying half that for just one inferior fan at a computer store). And he threw in some extras to fill the box (bubble wrap is expensive, so might as well use more fans).

I'm really impressed by the 40mm fans (1511FB-04W-B56)... the pics don't do them justice. They're a really beefy 28mm deep, and move a LOT of air. Anyway, I wanted to dig up more specs on them... so I figured I'd share my findings. According to this page: http://www.xsfans.com/index.php?main...roducts_id=884 , they claim
Fan Speed: 15,000 RPM
Noise: 42dBA

And according to this: http://www.zippy.com.tw/BackEnd/Down...2005+A1%20.pdf , the faster 1511FB-04W-B7x has these specs:
0.75A
17.66CFM

So this version will push less air than that. The catalog has a lot of information on the meaning of the part numbers, and calculating speed, airflow, etc.: http://www.nmbtc.com/pdf/catalogs/Fa..._Full_2011.pdf

My calculation says that the speed 5 model that DTR sells should push about 15 CFM (airflow_n=17.66*((0.46/0.75)^(1/3))). Pretty impressive for such a small fan (though it's noisy).

Also, I measured the fan, and it's actually 38mm, not 40mm, which is consistent with the datasheet (size 14 is 35mm, size 16 is 40mm... so I think the size number is actually in imperial units, which would be 1.5", or ~38mm). It seems to fit fine in a 40mm fan mount though.

Regarding the 60mm fans... they're really nice as well. They move a lot of air, and are actually pretty quiet. Definitely more efficient than the small fans, if you've got the room for them.

DogP