Reflective holographic optical storage method and device

A reflective holographic optical storage method, comprising:

• performing an interference between a reference light and a signal light to form a hologram on a storage medium plated with a reflection layer;
• using the same reference light to be incident on the same position to generate a normal reproduction light that is symmetrical and opposite to the signal light relative to a normal line of the storage medium when reproducing the hologram;
• and
• loading a conjugate reference light to generate a conjugate reproduction light that is coaxially and opposite to the signal light.

A reflective holographic optical storage device, comprising:

• a conjugate reference light loading device;
• a normal reproduction light receiving device;
• and
• a conjugate reproduction light receiving device,
• wherein the conjugate reference light loading device forms a reference light into a conjugate reference light, the reference light generates a normal reproduction light, the conjugate reference light generates a conjugate reproduction light, the normal reproduction light is symmetrical and opposite to a signal light relative to a normal line of a storage medium, and the conjugate reproduction light is coaxially and opposite to the signal light.