Abstract: A laser is provided. The laser includes a base plate, a frame, a plurality of light-emitting subassemblies, a plurality of first conductive structures and a second conductive structure. The frame is disposed on the base plate and is configured to form an accommodation space with the base plate, the plurality of light-emitting subassemblies are disposed on the base plate and in the accommodation space, the plurality of first conductive structures are spaced apart at an end of the frame proximal to the base plate, wherein each of the first conductive structures includes a substrate insulated from the base plate and a conductive layer disposed on a surface of the substrate distal to the base plate; and the second conductive structure has one end electrically connected to the conductive layer and another end connected to at least one of the plurality of light-emitting subassemblies.