title: Arbitrary GRIN component fabrication in optically driven diffusive photopolymers.
abstract: We introduce a maskless lithography tool and optically-initiated diffusive photopolymer that enable arbitrary two-dimensional gradient index (GRIN) polymer lens profiles. The lithography tool uses a pulse-width modulated deformable mirror device (DMD) to control the 8-bit gray-scale intensity pattern on the material. The custom polymer responds with a self-developing refractive index profile that is non-linear with optical dose. We show that this nonlinear material response can be corrected with pre-compensation of the intensity pattern to yield high fidelity, optically induced index profiles. The process is demonstrated with quadratic, millimeter aperture GRIN lenses, Zernike polynomials and GRIN Fresnel lenses.
authors.forename: Adam C
authors.initials: AC
authors.lastname: Urness
authors.forename: Ken
authors.initials: K
authors.lastname: Anderson
authors.forename: Chungfang
authors.initials: C
authors.lastname: Ye
authors.forename: William L
authors.initials: WL
authors.lastname: Wilson
authors.forename: Robert R
authors.initials: RR
authors.lastname: McLeod