Protecting your laser product can be as easy as wearing a grounding wrist strap at all times when handling the laser diode, including during the unpacking and inspection process. Properly grounded anti-static mats are also useful. Earth Ground: the Earth Ground is a safety ground and should carry current only in case of a fault condition, such as an internal insulation breakdown. Grounding a laser diode and the. How to ground your diode engraver, to limit bugs during engraving, made on twotrees ts2 10w, also works for other diode lasers, approximate setup. The cab,e passes through the cable guide chain. photo 3: Photo: a. After my previous question I noticed that the laser diode I have is anode-grounded, meaning that the case (which is the diode's metal case and often connected to circuit ground to reduce noise, I guess) is tied to the anode of the laser diode. If the metal case has to be connected to the ground, it is necessary to use an anode grounded or a cathode grounded laser driver, as shown in the figure below: Anode grounded drivers. The purpose of this laser diode tutorial is to provide the information necessary to create a long lifetime, stable laser diode system.