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US 7,740,774 B2Granted
Resonantly enhanced photosensitivity
AssigneeSchott AG
InventorsJoseph S. Hayden, Bianca Schreder, Jose Zimmer
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Abstract
A resonant enhanced photosensitive material includes a trap center that is adapted to interact with light and enhances the photosensitivity of the material based on a resonant interaction process with photons. The invention provides enhanced photosensitivity materials and, especially a method for enhancing photosensitivity in glasses, glass ceramics and ceramics.
Claims19
A method of enhancing photosensitivity in a photosensitive material, comprising:
- introducing of dopants into said material,
- said dopants providing real electronic states with an energy above the ground state,
- said energy of said real electronic states being a multiple n of the energy of individual photons in the light beam used to create the photosensitivity effect where n is an integer with n>1,
- directing a first laser light beam into said material and
- directing a second laser light beam into said material interacting in an overlapping area within said photosensitive material within at least a portion of said first laser light beam and
- generating a photonic interaction in said photosensitive material, wherein said interaction comprises a multiphoton absorption process,
- wherein a refractive index of said photosensitive material is changed based on said multiphoton assisted absorption process.
4 more elements
Dependencies are inferred from the claim text.