Laser Power Meter

Power meter for CO2 laser tubes.
Make power meters more accessible.

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Commercial Co2 laser power meters are quite expensive but are a good tool to own to debug a laser cutter. It enables people to tell if their tube is fading.

Measuring laser power is done by firing a laser at a known mass of material with known thermal mass for a known time.
By the temperature rise during that time you can figure out the power that went in.

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Denis Redfern wrote 01/16/2022 at 12:06 point

I'm interested in this. I have a similar project in construction. Trying to figure out how to anodize the Al block without paying a fortune for dye.  I plan to calibrate mine by using power resistors bolted to the heat sink

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