This question is inspired by: Is future technology that is indistinguishable from magic considered a "Magical Effect"?.
Darkness spells and magical effects block all (non-magical) light. A laser is coherent light. What would happen to a laser beam entering an area of darkness? Would the effect depend on how much energy is pumped into the laser beam?
It seems likely to me that darkness wins out. But a laser can cut hard metals and hard minerals, so it has more energy within its beam than sunlight in an equivalent volume / beam cross-section.