Direct laser writing of 3-d gratings and diffraction optics
AssigneePresident and Fellows of Harvard College
InventorsEric Mazur, Michael Gerhard Moebius, Kevin Vora, Seung Yeon Kang, Phillip Alejandro Munoz, Guoliang Deng
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Abstract
Diffractive optical elements and methods for their fabrication are disclosed. In one aspect, a diffractive optical element is disclosed, which comprises a polymeric substrate substantially transparent to at least one electromagnetic radiation wavelength, and a plurality of metallic inclusions distributed in said polymeric substrate according to a predefined pattern such that said inclusions can collectively diffract at least a portion of incident radiation having said at least one radiation wavelength.
Claims21
A diffractive optical element, comprising:
- a polymeric substrate substantially transparent to at least one electromagnetic radiation wavelength,
- a plurality of metallic inclusions distributed in said polymeric substrate according to a predefined pattern such that said inclusions can collectively diffract at least a portion of incident radiation having said at least one radiation wavelength.
A method of generating a polymeric diffractive element, comprising:
- providing a mixture of a polymer, a metal precursor and a solvent, wherein said polymer is substantially transparent to at least one electromagnetic radiation wavelength,
- curing the mixture to generate a cured mixture,
- applying a plurality of short laser pulses to a predefined locations of said cured mixture so as to generate a predefined pattern of metal structures within said polymer so as to form a diffractive element capable of diffracting at least a portion of incident radiation having said at least one radiation wavelength.
-36. (canceled)
Dependencies are inferred from the claim text.