Meta Platforms Technologies, LLC

Facebook Technologies, LLC

Tingling Rao

Andrew John Ouderkirk

Lafe Joseph Purvis, Ii

Tanya Malhotra

Arman Boromand

Sheng Ye

Kimberly Kay Childress

Oleg Yaroshchuk

Austin Lane

Poer Sung

Ehsan Vadiee

Giuseppe Calafiore

Renate Eva Klementine Landig

Sandeep Rekhi

Li Yao

Ryan Li

Namseok Park

Lu Lu

Katherine Marie Smyth

Matthew E Colburn

Ankit Vora

Junren Wang

Kenneth Alexander Diest

Spencer Allan Wells

Alexander Koshelev

Liliana Ruiz Diaz

Nagi H Elabbasi

Guohua Wei

Yuge Huang

Taha Masood

Anurag Tyagi

Eric C Schmitt

Lafe Purvis

Peter Topalian

Emily Anne Makoutz

Zachary Perlmutter

Philip Wang

Bachir Ahmed Abeid

Lafe Joseph Purvis Ii

A photonic integrated circuit (PIC) includes an organic solid crystal (OSC) material layer, the OSC material layer having a substrate portion and a raised optical element integral with and extending from the substrate portion. The raised optical element may include a passive or active component of the photonic integrated circuit.

Active modulation of the refractive index in photonic integrated circuits via charge injection

A multilayer organic thin film includes a plurality of biaxially-oriented layers, where each layer is characterized by mutually orthogonal refractive indices, n≠n≠n. In example structures, the corresponding in-plane refractive indices of adjacent layers may be rotated with respect to each other by a predetermined angle. Such a multilayer may be incorporated into a circular reflective polarizer, for example, which may be used in display systems to provide high broadband efficiency and high off-axis contrast. In an example process, individual organic thin films may be molded, and then oriented and stacked to form a multilayer.

Multilayer organic solid thin films having a biaxial refractive index

An optical element includes a substrate and a metasurface located over a surface of the substrate. The metasurface may include an organic solid crystal material. A related display includes a waveguide, and a light input coupling element disposed on a surface of the waveguide, where the light input coupling element includes an organic solid crystal metasurface.

OSC metasurfaces

An organic thin film includes an organic solid crystal material and has mutually orthogonal refractive indices, n, n, and neach having a value at 589 nm of between approximately 1.5 and approximately 2.6, where n≠n≠n. The organic thin film may be birefringent, and may be configured as a single layer thin film, or plural organic thin films may be stacked to form a multilayer that may be incorporated into an optical element, such as a reflective polarizer.

High refractive index and highly birefringent solid organic materials

An optical film includes a plurality of helically arranged liquid crystals and organic solid crystal structures at least partially surrounding the plurality of helically arranged liquid crystals. A method of making the optical film includes obtaining a substrate with an alignment layer and a film of a first solution on the alignment layer. The first solution includes liquid crystals and organic crystal molecules. The liquid crystals form a plurality of helically arranged liquid crystals on the alignment layer. The method also includes forming organic solid crystal structures by crystallizing the organic crystal molecules. The organic solid crystal structures at least partially surround the plurality of helically arranged liquid crystals.

Organic solid crystals having helical structures formed using cholesteric liquid crystals

An optical film includes a block copolymer film defining a plurality of helically shaped cavities and a plurality of helically shaped organic solid crystals positioned within the plurality of helically shaped cavities. A method of making the optical film includes obtaining a film of a block copolymer solution including a chiral block copolymer and a non-chiral block copolymer on a substrate. The method includes annealing the film, thereby forming a plurality of helical structures from the chiral block copolymer defined within the non-chiral block copolymer and removing the plurality of helical structures, thereby creating a plurality of helically shaped cavities. The method further includes forming organic solid crystals inside the plurality of helically shaped cavities, thereby forming the optical film.

Organic solid crystals having helical structures formed using negative templates

A system comprising (1) at least one optical element having a nonplanar surface, (2) at least one photonic integrated circuit disposed on the nonplanar surface of the optical element, the photonic integrated circuit comprising (A) an optical core that contains an optically anisotropic organic material and (B) a cladding disposed over the optical core. Various other apparatuses, systems, and methods are also disclosed.

Apparatus, system, and method for disposing photonic integrated circuits on surfaces

An optical film includes an organic solid crystal film formed of a contiguous organic solid crystal having a first dimension no less than 100 micrometer and a second dimension distinct from the first dimension no less than one centimeter. Methods for making the organic solid crystal film are also described.

High refractive index birefringent organic solid crystal and methods of making thereof

An organic field effect transistor includes a channel structure having a photoalignment layer and an organic semiconductor layer disposed directly over the photoalignment layer, where a charge carrier mobility varies along a thickness direction of the channel structure. The channel structure may define an active area between a source and a drain of the transistor and may include alternating layers of at least two photoalignment layers and at least two organic semiconductor layers. Each photoalignment layer is configured to influence an orientation of molecules within an overlying organic semiconductor layer and hence impact the mobility of charge carriers within the device active area while also advantageously decreasing the OFF current of the device.

OFETs having multilayer organic semiconductor with high on/off ratio

A method of forming an organic solid crystal (OSC) thin film includes forming a layer of a non-volatile medium material over a surface of a mold, forming a layer of a molecular feedstock over a surface of the non-volatile medium material, the molecular feedstock including an organic solid crystal precursor, forming crystal nuclei from the organic solid crystal precursor, and growing the crystal nuclei to form the organic solid crystal thin film. An organic solid crystal (OSC) thin film may include a biaxially-oriented organic solid crystal layer having mutually orthogonal refractive indices, n≠n≠n.

Organic solid crystal—method and structure

An organic thin film includes an organic crystalline phase, where the organic crystalline phase defines a surface having a surface roughness (R) of less than approximately 10 micrometers over an area of at least approximately 1 cm. The organic thin film may be manufactured from an organic precursor and a non-volatile medium material that is configured to mediate the surface roughness of the organic crystalline phase during crystal nucleation and growth. The thin film may be formed using a suitably shaped mold, for example, and the non-volatile medium material may be disposed between a layer of the organic precursor and the mold during processing.

High refractive index organic solid crystal with controlled surface roughness

Disclosed herein is a nanoimprint lithography (NIL) soft mold precursor material comprising a curable fluorinated base resin component, one or more additives, one or more crosslinkers, and one or more of a photo radical generator, a photo acid generator, or both. According to certain embodiments, further disclosed herein are a polymeric material comprising a partially or totally polymerized or crosslinked NIL precursor material, a NIL soft mold comprising the polymeric material, a process for making the NIL soft mold, and a method of using the NIL soft mold to form a NIL grating.

Soft mold formulations for surface relief grating fabrication with imprinting lithography

Disclosed is a polymeric waveguide for propagating light therein along width and length dimensions of the polymeric waveguide. The polymeric waveguide has a first curved surface on one side thereof and a second curved surface on an opposite second side thereof, and a refractive index spatially varying through a thickness thereof between the first curved surface and the second curved surface. The polymeric waveguide is curved in a cross-section comprising at least one of the width and length dimensions.

Curved graded-index waveguides and methods of making the same

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Bellevue, WA, United States of America

Tingling Rao