Comparing Diode Lasers to Fiber and CO2 Lasers The key benefit of a diode (solid-state) laser is the ability to make a small unit with a weight that does not exceed 200 grams.

How Does A Diode Work? A diode essentially works like a valve within a circuit, controlling the direction of the flow of the electric current.

A diode that emits light at a shorter wavelength than ever before shows huge — albeit destructive — technological promise. But further work is needed to ensure that this promise is fulfilled.