A light emitting apparatus can include: a first connecting part and a second connecting part connected to each other to form a propagation channel therebetween through which laser beam from a laser light source can propagate, and a power supply cable including a pair of terminals provided in a middle thereof and connected to and separated from each other. One of the terminals can be included in the first connecting part and the other thereof can be included in the second connecting part. When the first connecting part and the second connecting part are connected to each other, the terminals can be connected to each other to constitute a supply channel configured to supply drive power to a driving circuit. When the first and second connecting parts are disconnected, the connected terminals can be separated from each other to cut off the supply channel.