this doide burned?

so i found a laser diode and i plugged it in my homemade driver and i started to roll my potentiometer to less resistance broblem was that wire from battery to driver didnt connect wery vell (cut in a middle and with hands pushing wires together) it didnt seem to ligth (i had camera to see if it was an ir diode)and suddendly when i moved wires it ligthed and turned off. i havent been able to ligth athat diode again. so is my diode "burned" now?

lol what a typo in title xD

Most probably, do you have a digital multimeter?

yes

can i see with multimeter if my diode is dead?

Yes, check the current going in the circuit, and measure the voltage over the diode pins.

i putted DMM to 200mA and putted red and black wires to between battery and driver and i didnt get any measures

i putted to 20V and putted red and black wires to diode pins and i didnt get any measure

am i doing this rigth?

Since you don't get any current or voltage it seems like either the battery is dead or the driver is.

batteries are not dead they run in 6V but what about driver i made that myself with DDLs instructions

how do i measure my driver to see if its dead?