Would a DC-DC buck converter work as a laser driver?

[nobeltnium]

Disclaimer: Despite having goggle, IR laser still scare the shit out of me so I'll be trigger the laser remotely, from another room and watch it through a full spectrum camera. Then physically unplug the battery pack before entering the laser room. Keep your eye balls guys.

I'm planning to drive a 2.3W laser diode, and this is the spec


Using this DC-DC buck converter to drive the diode. The 2 potentiometer control Voltage and Currents.
Powered by 2x 18650 battery (8.4V input)


So far I've only test using it on a red LED which operate in about the same voltage range. I set the Voltage to 2.2 and leave the current at max (5 Ampere). The LED seems to work alright so far.
I also run a few high powered LED at >3V and also max current. Thing seems to work alright.

Would it work the same for a laser diode? My thinking is that as long as the voltage is right, the diode/LED will only take whatever current it needs and don't have to worry about over current. But I want to hear the opinion from people with more experience

On a side note, on Aliexpress I saw a buyer show case his diode test using a 50W resistor connect to the diode in series.

 

[WizardG]

A laser diode wants a constant current source, not constant voltage. If that will operate in CC mode reliably it might work. I'd really want to see how clean its output is with an oscilloscope before risking an expensive laser diode on it.