Patent ID: 7701302
Filing Date: 2010-04-20
Classification: G04F

Abstract:
1. An atomic frequency acquisition apparatus comprising: a substrate; a light reflecting structure positioned on the substrate, the light reflecting structure including a cavity portion and a light reflecting portion having a first area and a second area, the cavity portion being positioned between the substrate and the first and second areas of the light reflecting portion, the cavity portion storing an atom gas; a light emitting element positioned between the substrate and the cavity portion, the light emitting element being located outside the cavity portion, the light emitting element emitting a light in a primary direction toward the light reflecting portion, the first area of the light reflecting portion reflecting the light linearly in a first reflecting direction that is perpendicular to the primary direction directly toward the second area of the light reflecting portion so that the light passes through the atom gas and excites atoms in the cavity portion while passing through the cavity portion, the second area of the light reflecting portion reflecting the light in a second reflecting direction that is substantially opposite the primary direction; and a first light detecting element positioned between the substrate and the cavity portion, the first light detecting element being located outside the cavity portion, the first light detecting element receiving the light that is reflected by the light reflecting portion in the second reflecting direction.