Aluminum oxide material for optical data storage
AssigneeLandauer, Inc.
InventorMark Akselrod
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Abstract
The present invention provides aluminum oxide crystalline materials including dopants and oxygen vacancy defects and methods of making such crystalline materials. The crystalline materials of the present invention have particular utility in optical data storage applications.
Claims38
A crystalline material comprising:
- a base material comprising Al2O3;
- a first dopant comprising magnesium;
- and
- a second dopant comprising carbon, wherein said crystalline material includes a plurality of at least one type of oxygen vacancy defect.
A crystalline material comprising Al2O3, wherein said crystalline material includes at least one color center having:
- an absorption in the region of 435±5 nm, an emission in the region of 520±5 nm and a 9±3 ns fluorescence lifetime.
A crystalline material comprising Al2O3, wherein said crystalline material includes at least one color center having:
- an absorption in the region of 335±5 nm, an emission in the region of 750±5 nm and a 80±10 ns fluorescence lifetime.
A crystalline material comprising:
- a base material comprising Al2O3;
- a first dopant comprising magnesium;
- and
- a second dopant comprising carbon, wherein said crystalline material includes at least one color center having:
- an absorption in the region of 435±5 nm an emission in the region of 520±5 nm and a 9±3 ns fluorescence lifetime.
A crystalline material comprising:
- a base material comprising Al2O3;
- a first dopant comprising magnesium;
- and
- a second dopant comprising carbon, wherein said crystalline material includes at least one color center having:
- an absorption in the region of 335±5 nm, an emission in the region of 750±5 nm and a 80±10 ns lifetime.
A crystalline material comprising:
- a base material comprising Al2O3;
- a first dopant comprising magnesium;
- and
- a second dopant comprising carbon, wherein said crystalline material includes at least one color center having:
- an absorption in the region of 435±5 nm, an emission in the region of 520±5 nm and a 9±3 ns fluorescence lifetime and at least one color center having:
- an absorption in the region of 335±5 nm, an emission in the region of 750±5 nm and a 80±10 ns lifetime.
A crystalline material comprising:
- a base material comprising Al2O3;
- a first dopant comprising magnesium;
- a second dopant comprising carbon, and
- a third dopant comprising hydrogen, wherein said crystalline material includes at least one color center having:
- an absorption in the region of 435±5 nm, an emission in the region of 520±5 nm and a 9±3 ns fluorescence lifetime and at least one color center having:
- an absorption in the region of 335±5 nm, an emission in the region 750±5 nm and a 80±10 ns lifetime.
A crystalline material comprising a base material comprising Al2O3 and a dopant comprising Mg, wherein said crystalline material includes a plurality of aggregate oxygen vacancy defects.
Dependencies are inferred from the claim text.