One of things that I never show before here. LASER. I was using it when I was trying to build SLS 3D printer. Project was stopped as there was no time and money to continue to develop it. But laser stay and now I like to show it.
It is 808 nm 20W diode. When it was new, but when I bought it, it have 14W on output. There are 2 fibers taking beam outside of diode. Here is some datasheet of it <link> .
To power it up I have adjustable power supply from 1,7V to 2,3V with 40A.
To cool it down there is a 40W Peltier whir heatsink and 2 fans but it looks that it is not enough. IT goes up very fast after 2 min of continuous usage on max power. But I set it for about 40% of max power and it works fine for me. PID driver is measuring temperature of diode and control power supply of Peltier.
There is additional multimeter that is showing up voltage on diode, but it power supply is not stabilized and it does not work well.
