Disclosed is a light-material coupling and emitting apparatus for coupling and emitting light and a material. The present disclosure is to utilize light coupled with a gaseous material or a certain state of material. According to the present disclosure, light is coupled with a gas, a liquid, or any state (plasma state) of material, and the coupled light and the material are emitted toward a target object or a predetermined region. When reaching the target object or the predetermined region, the material reacts with another material existing around the target object or the predetermined region. According to one embodiment, when light coupled with a first material is emitted from the light-material coupling and emitting apparatus, the first material coupled with the light falls away from the light and then chemically reacts with a second material. The apparatus uses a specific effect caused by this chemical reaction.
