Lovely eyewear… 
I hope it does the job it was created for. 
Be Safe! …but have fun. 
It was like $50 and apparently much better quality than the cheap ones you can get form china, so it better be 
Be gracious and don’t be surprised if someone mistakens you for Elton John and asks for an autograph. 
hahaha
I’m already dazzled. 
Nice. Looking forward to watching this build. No g-ball lens built into the can. 7 watt 450nm diode from a NUBM44/47 bank?
Thanks, yeah its a nubm44 
I hope that mount has the right tolerances to press fit the diode, otherwise you get thermal issues
also a TEC cooling is needed to keep the diode cool if you want to drive it hard
I’ll heatsink the diode with thermal paste or liquid metal.
I’ll be making my own mount for the diode so I can probably do pressfit too.
With a large heatsink you can do 6-7W without a tec, see some of the videos on youtube.
A tec is more necessary for 8-10W which is pretty extreme.
I’m trying to keep the amount or parts minimized for highest reliability and lowest price, so that means no liquid cooling or fans or tecs.
Just tested the laser tonight, incredibly powerful, was at minimum power and it started burning a hole in some cardboard.
Unfortunately I seem to have some issue with my laser driver, so just using my DPS5020 power supply to drive the laser at constant voltage and it works great.
Planning to machine a custom copper heatsink for testing purposes, as I need to hold both the collimation lens and crystal at fixed distances.
My idea is to make a simple rectangle block that I can screw onto a CPU heatsink like the NH-D15 for some extreme cooling:
Then I can also make a second attachment for LED MCPCBs and I can easily switch my heatsink to whatever needs to be tested.
I also just purchased a special M9x0.5 thread tap (for the lens) to make the copper laser block.
Please take care of you
and the outside world!
Regards Xandre
It looks like you’re finally starting to get sumwatt more serious about this little project.
:laughing:
M9 is an unusual size. Never heard of it before now. Good to see more components rolling in. Hopefully the driver can be sorted out.
Yup, closed room, goggles, fire extinguisher at the ready.
M9x0.5 is odd but found on almost all security camera/fpv camera lenses and laser lenses, it seems to be the standard for those things that need fine adjustability of optics.
I want a good cooler that would be standard for all my testing, for better repeatability
The NH D15 is basically the best cooler that won’t be a liquid cooler.
Yikes! This is scary
those youtube videos does not tell you how many hours you got before the diode degrades rapidly
you overdrive the diode already and any commercial module for laser show
serious quality laser engraver has TEC cooling or does drive the diode at lower currents within specs
The 6W opt lasers engravers only have an aluminum heatsink and fan cooling it.
I’ve seen people get up to 8+ W by cooling the laser in the fridge.
I don’t think I’ll be going anywhere near that high, maybe 6-7W at most assuming the crystal doesn’t burn up at that power.
My cooling should be significantly better than what opt lasers has on their engravers anyway
A little
I’ve done a lot of research on lasers in the past but never owned a diode this powerful.
Safety first!
This cat’s observations about safety dated or not sure made an impression upon me.
I think he’s not over-hysterical about laser safety across the board per se butt where he does gets serious I do believe he’s SERIOUS. :laughing:
http://www.repairfaq.org/sam/lasersaf.htm#saftoc
http://www.repairfaq.org/sam/lasersam.htm
http://www.repairfaq.org/sam/laserfaq.htm
And some third-party harrowing stories of laser mayhem…… :person_facepalming:
https://www.photonics.com/Articles/Laser_Safety_Little_Mistakes_with_Big/a25167