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US 2019/0240002 A1Published application
Optical device and method for modifying the refractive index of an optical material
AssigneeUniversity of Rochester
InventorsWayne H. Knox, Li Ding, Jay F. Kunzler, Dharmendra Jani
Life of this patent
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Abstract
An optical device comprising an optical hydrogel with select regions that have been irradiated with laser light having a pulse energy from 0.01 nJ to 50 nJ and a wavelength from 600 nm to 900 nm. The irradiated regions are characterized by a positive change in refractive index of from 0.01 to 0.06, and exhibit little or no scattering loss. The optical hydrogel is prepared with a hydrophilic monomer.
Claims17
1-13. (canceled)
A method of changing the index of refraction of an optical, polymeric material, the method comprising:
- irradiating selected regions of the optical, polymeric material with laser light from focused, visible or near-IR laser having a pulse energy from 0.05 nJ to 1000 nJ and a light wavelength from 400 nm to 1200 nm;
- and
- scanning a focus of the laser light through the selected regions for producing a change in refractive index of the optical, polymeric material, thereby forming a three-dimensional refractive structure that exhibits little or no scattering loss.
Dependencies are inferred from the claim text.