To improve an electric field enhancing effect due to plasmon resonance by well controlling the plasmon resonance in a thickness direction and the direction crossing the thickness direction at a right angle.

Metal particle layers 12, each of which is constituted so that metal domains 14 are arranged within a horizontal plane at a predetermined interval, are formed within a dielectric layer by lamination at a proper interval in a vertical direction. Accordingly, the growth of metal particles 14A is controlled with respect to a horizontal direction to adjust the interval ΔW of the metal domains 14. The distance ΔL between the metal particle layers 12 can be adjusted by controlling the thickness of the laminated dielectric layer 10B with respect to a vertical direction.