Two-photon absorption dye-containing material, three-dimensional refractive index modulation material, three-dimensional absorption index modulation material and three-dimensional optical recording material
First Claim
1. A two-photon absorption dye-containing material, comprising at least a two-photon absorption dye capable of decoloring itself through two-photon absorption.
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Accused Products
Abstract
To provide a two-photon absorption dye-containing material having a great off-resonant two-photon absorption cross section and comprising a two-photon absorption dye capable of decoloring itself through off-resonant two-photon absorption, useful for a three-dimensional refractive index or absorption index modulation material, a three-dimensional optical recording medium, three-dimensional refractive index modulation method and recording and reproducing method for a three-dimensional optical recording medium a two-photon absorption dye-containing material comprising at least a two-photon absorption dye capable of decoloring itself through two-photon absorption.
39 Citations
13 Claims
- 1. A two-photon absorption dye-containing material, comprising at least a two-photon absorption dye capable of decoloring itself through two-photon absorption.
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11. A method for three-dimensional refractive index modulation, comprising decoloring a two-photon absorption dye capable of decoloring itself through two-photon absorption,
wherein the two-photon absorption is caused by irradiating the dye with a laser light, and the laser light has a wavelength free of linear absorption for the dye and a longer wavelength than a linear absorption band of the dye.
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12. A three-dimensional optical recording method, comprising decoloring a two-photon absorption dye capable of decoloring itself through two-photon absorption,
wherein the two-photon absorption is caused in a region where a laser light is focused, and the laser light has a wavelength free of linear absorption for the dye and a longer wavelength than a linear absorption band of the dye, so as to make a difference in a refractive or absorption index between the region and a region where the laser light is not focused.
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13. A three-dimensional optical reproducing method, comprising:
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irradiating a two-photon absorption dye-containing material with a light, wherein the two-photon absorption dye-containing material has a recorded region where a two-photon absorption dye is decolored through two-photon absorption and a unrecorded region where a two-photon absorption dye is not decolored; and
detecting a difference in a reflectivity, a transmittance or an absorption index between the recorded region and the unrecorded region.
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Specification