公开(公告)号：US11796734B2

公开(公告)日：2023-10-24

申请号：US17574107

申请日：2022-01-12

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Carlo Liberale ,  Andrea Bertoncini

IPC: G02B6/02 ,  G02B6/27 ,  G02B6/036 ,  G02B6/36

CPC classification number: G02B6/03616 ,  G02B6/02338 ,  G02B6/3684 ,  G02B6/274

Abstract: An optical waveguide is configured to guide an optical beam, and the optical waveguide includes a down-taper element configured to reduce a diameter of an incoming light beam having a random polarization; a dual-core directional coupler element configured to separate the incoming light beam into a horizontally-polarized beam and a vertically-polarized beam, each beam being confined in first and second cores, respectively; and a core fan-out element configured to increase a distance between the horizontally-polarized beam and the vertically-polarized beam upon exit from the core fan-out element. Each of the down-taper element, the dual-core directional coupler element, and the core fan-out element are 3-dimensional, 3D, printed using a single material.

公开(公告)号：US12033767B2

公开(公告)日：2024-07-09

申请号：US17599169

申请日：2020-03-05

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Carlo Liberale ,  Andrea Bertoncini ,  Gheorghe Cojoc

IPC: G21K1/00 ,  G02B21/32 ,  G02B21/36 ,  G02B26/08

CPC classification number: G21K1/006 ,  G02B21/32 ,  G02B21/361 ,  G02B26/0833

Abstract: A holographic optical tweezers for manipulating a micro- or nano-size particle, the optical tweezers including a light source configured to emit first and second light beams; a light focusing apparatus configured to focus the first and second light beams to generate focused light beams, which create optical forces; and a trapping assembly configured to receive the first and second focused light beams and form a trap for holding the particle with the optical forces. The trapping assembly includes first and second micromirrors attached to a microscope coverslip.

公开(公告)号：US11886011B2

公开(公告)日：2024-01-30

申请号：US17319441

申请日：2021-05-13

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Carlo Liberale ,  Andrea Bertoncini ,  Innem Venkata Anudeep Kumar Reddy

IPC: G02B6/26 ,  F21V8/00 ,  G21K1/00 ,  G02B21/32

CPC classification number: G02B6/262 ,  G02B6/0046 ,  G02B21/32 ,  G21K1/006

Abstract: An optical microstructure is configured to work with an optical fiber or a different substrate and the optical microstructure includes a beam converter including a tapered optical guide configured to transform a gaussian optical beam into a first annular optical beam; an inverted cone having first and second reflection surfaces, each configured to reflect the first annular optical beam, having a radius R1, so that a resulting second annular optical beam has a radius R2 larger than the radius R1; and a prism having a reflection surface configured to reflect the second annular optical beam to form a third converging annular optical beam. The third converging annular optical beam includes plural single optical beams that intersect at a given crossing point, outside the optical microstructure. The plural single optical beams form an optical trap.

公开(公告)号：US11269168B2

公开(公告)日：2022-03-08

申请号：US16227286

申请日：2018-12-20

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Andrea Bertoncini ,  Carlo Liberale

IPC: G02B17/08 ,  G02B21/02 ,  G02B27/00

Abstract: A catadioptric high-aperture optical element includes a substrate made of a transparent material; and a lens formed on the substrate. The lens includes, plural refractive features formed on a central portion of the lens, and plural reflective features formed on a ring portion of the lens. The plural refractive features are shaped to refract light incoming from the substrate and the plural reflective features are shaped to achieve total internal reflections with the light incoming from the substrate.