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US 7,020,372 B2Granted
Optical devices with engineered nonlinear nanocomposite materials
AssigneeUltraDots, Inc.
InventorsHoward Wing Hoon Lee, Alan Hap Chin, William Matthew Pfenninger
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Abstract
The invention relates to an optical device. The optical device comprises a waveguide core and a nanocomposite material optically coupled to the waveguide core. The nanocomposite material includes a plurality of quantum dots. The nanocomposite material has a nonlinear index of refraction γ that is at least 10−9 cm2/W when irradiated with an activation light having a wavelength λ between approximately 3×10−5 cm and 2×10−4 cm.
Claims21
An optical device comprising:
- a waveguide core including a portion formed of a nanocomposite material, said nanocomposite material including:
- a matrix material;
- and
- a plurality of quantum dots dispersed in said matrix material, a quantum dot of said plurality of quantum dots including a substantially crystalline core that includes a semiconductor material selected from the group consisting of Si and Ge, said quantum dot being substantially defect free such that said quantum dot exhibits photoluminescence with a quantum efficiency that is greater than 10 percent.
1 more element
Dependencies are inferred from the claim text.