Photosensitive material

Details Photosensitive material Photosensitive material

G - Physics

11

B

G11B 7/251 (2006.01) G11B 7/243 (2006.01)

Patent

CA 2582440

Photosensitive material for holographic recording and storage is disclosed. The material comprises a hosting matrix with distributed hosted discrete particles. The particles comprise a core portion and a shell portion surrounding the core portion, wherein the shell portion is capable to undergo a phase transformation from an amorphous or a metastable crystalline state to a stable crystalline state in response to laser beam irradiation. The phase transformation is accompanied by change of refractive index.

L'invention concerne une matière photosensible destinée à l'enregistrement et au stockage holographiques. La matière comprend une matrice hôte comportant des particules hôtes discrètes réparties. Les particules comprennent une partie de noyau et une partie de coque entourant la partie de noyau, la partie de coque étant capable de subir une transformation de phase en passant d'un état amorphe ou d'un état cristallin métastable à un état cristallin stable sous l'effet d'une irradiation par faisceau laser. La transformation de phase est accompagnée d'un changement de l'indice de réfraction.

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