New Diode

[catalanjo]

the significant thermal bottleneck at the diode flange .

IMHO that's a wee bit of an understatement.

Cheers
PS
Mr P........Currently monitoring frequency known as 3.5G (for some reason ) .... but seems more like 3.5K to me

[DTR]

Got some more of these in. I also gave the diode a new name that better fits as it refers to the correct part number now. I also have a page for them now on my site.
https://sites.google.com/site/dtrlpf...nm-laser-diode

[catalanjo]

Just seen that my one is on the move

Many Thanks ! NUBM44

Cheers

[kecked]

When you factor in the eye brightness difference between 462nm and 445nm how does the 2w 462nm diode stack up in terms of brightness?
I couldn't find the chart but I think its like 10%. I really prefer the 462nm diodes over the 445nm diodes. They also seem to have less of a halo and fluoresce less.
They remind me of the inky blue from an argon. power is not everything but I do strictly graphics. Now figure in the cost difference and 462nm starts to look pretty good even if you need a few more optics to combine.

I do see these 6w diodes as a great advance for cheaper laser cutters for home. I you can focus down 10 of these you can start to pass up CO2. I wonder if the shorter wavelength could let you cut materials like metal you can't cut with lower power using CO2. No idea. Food for thought.

[planters]

I don't know what the wavelength of these are (yet). They may also have beam specs the make them no brighter than the current 445 or 462 diodes. They may even be worse. Once I have some data and I'm working on that right now, then the relative trade offs can be balanced more accurately.

[catalanjo]

........ Once I have some data and I'm working on that right now,.........

Still worried about "thermal bottle neck" .... can you figure out a way to check this and include it in your "setup"?

Cheers

[planters]

This has been discussed before and someone, I cant remember who, did an elegant analysis based on the materials, dimensions and thermal loading. He presented it as a FET with numerous graphs. If someone can remember where this is I would like to look at it again as well. It was presented to determine if copper diode mounts justified the difficulty working with this material. Dave began offering copper 9mm mounts as a result. I will be testing in one of those mounts.

Bottom line is that it probably does not matter as we currently are dealing with it as well as possible short of diamond heat spreaders or micro-channel copper mounts. Furthermore, about one year ago I tested 445 diodes down to near LN2 temperature and the damage threshold was not substantially higher than at room temperature. It was probably facet damage as opposed to high temps that killed them as there was no way any part of those diodes was as high as room premature at failure.

[catalanjo]

Thanks a bunch, I requested mine in one of DTR's copper modules (just in case) Still worries me though !




Cheers

[VDX]

... could be this thread:

http://www.photonlexicon.com/forums/...diode-housings

Viktor

[catalanjo]

Thanks Viktor

Cheers