LED useable or just recycle?

[FRITZHID]

i dug this out of an old box in my closet, it's a primary copper mirror for a 4kW CO2 laser. it's liq cooled, solid CU, about 2.5" dia and has a gold plated mirror face. i was just wondering if any LED geeks would be interested in this as a heat sink or should i just recycle it?
if it can be used as a mirror in a 4kW laser i would assume that with chilled water running thru it, it could cool damn near any LED made to date ;)
all it would need is a gasket and connections. perhaps a scraping off of the gold to make a better soldering surface?
any advice?

this is the back of the 2 pcs, on left is mirror & screws, on right is the main body with the 3 mounting holes & 2 coolant connections.

this is the front of mirror & body, you can see the gold plating & the coolant inlet.

this is the 2 halves.

here you can see the coolant output in the main body

the beautiful gold reflective surface. looks nice but to bad for a high power laser.

Needless to say, this mother is heavy as hell & is an industrial piece.

 

[CKOD]

Looks perfect to bolt a CSM-360 to :D

 

[Harold_B]

Likely best as a heat sink since the copper surface will be really lousy in the 450nM region. In other words the mirror will absorb instead of reflect a good portion of the output of a down converting LED. It would be a great mirror for a pure 650nM or higher though. Any idea what kind of copper? Depending on the Beryllium content it can be a bugger to tap. I agree with CKOD though that a Phlatlight would a perfect application. Nice.

 

[FRITZHID]

Likely best as a heat sink since the copper surface will be really lousy in the 450nM region. In other words the mirror will absorb instead of reflect a good portion of the output of a down converting LED. It would be a great mirror for a pure 650nM or higher though. Any idea what kind of copper? Depending on the Beryllium content it can be a bugger to tap. I agree with CKOD though that a Phlatlight would a perfect application. Nice.

i wasen't thinking of anyone useing it as a mirror, especaly since it's designed for 10,500nm IR. i just figured someone may think it'd make a handy heatsink since it's all copper and is liquid cooled.... that and its capable of dissipating the heat power from a 4kw laser reflection (which is no small feat). i took a look at the measurements and i believe 2 to 4 of the CSM-360's COULD fit with a lil manipulation. 68mm Dia.

 

[Harold_B]

So just for curiosity sake, what were you doing with a 10.5KnM 4KW laser?

Four CSM-360's would be about 4 x 2,250lm for 9000lm. Might also be able to cram a 4 x 4 array of SST-90's on there for 16 x 1600lm for 25,600lm. Need to move a lot of heat though.

 

[jtr1962]

Those would be perfect to mount a thermoelectric on. Just for reference, a water-cooled copper heatsink I made for my thermoelectrics dissipates upwards of 200 watts with only a few degrees C temperature rise. You could easily mount 500 watts of LEDs on that heat sink if they fit, and still have low junction temperatures.

 

[FRITZHID]

So just for curiosity sake, what were you doing with a 10.5KnM 4KW laser?

LOL, it's part of my plan for world domination!:devil: J/K, i've been working in the laser field for over a decade now, this mirror came out of a ByStronic laser processor, a CNC machine used to cut metal.... among other things.

Those would be perfect to mount a thermoelectric on. Just for reference, a water-cooled copper heatsink I made for my thermoelectrics dissipates upwards of 200 watts with only a few degrees C temperature rise. You could easily mount 500 watts of LEDs on that heat sink if they fit, and still have low junction temperatures.

thats what i was thinking, this thing:thinking:, with chilled water or other coolant (LN2?), could dissipate ALOT of heat from a tiny area. i would think 500-1000w of LED IF they can/would fit, should anyone wanna try such an insane idea.....:anyone: