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公开(公告)号：US11163116B2
公开(公告)日：2021-11-02
申请号：US16804612
申请日：2020-02-28
发明人： Josue Lopez , Samuel Kim , Jamison Sloan , Boris Kharas , Jeffrey Scott Herd , Marin Soljacic , Cheryl Marie Sorace-Agaskar , Suraj Deepak Bramhavar , Steven Glenn Johnson , George Barbastathis
摘要： An integrated optical beam steering device includes a planar Luneburg lens that collimates beams from different inputs in different directions within the lens plane. It also includes a curved (e.g., semi-circular or arced) grating coupler that diffracts the collimated beams out of the lens plane. The beams can be steered in the plane by controlling the direction along which the lens is illuminated and out of the plane by varying the beam wavelength. Unlike other beam steering devices, this device can operate over an extremely wide field of view—up to 180°—without any aberrations off boresight. In other words, the beam quality is uniform in all directions, unlike with aplanatic lenses, thanks to the circular symmetry of the planar Luneburg lens, which may be composed of subwavelength features. The lens is also robust to misalignment and fabrication imperfections and can be made using standard CMOS processes.
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公开(公告)号：US20220057573A1
公开(公告)日：2022-02-24
申请号：US17496817
申请日：2021-10-08
发明人： Josue Lopez , Samuel Kim , Jamison Sloan , Boris KHARAS , Jeffrey Scott HERD , Marin SOLJACIC , Cheryl Marie SORACE-AGASKAR , Suraj Deepak BRAMHAVAR , Steven Glenn JOHNSON , George BARBASTATHIS
摘要： An integrated optical beam steering device includes a planar Luneburg lens that collimates beams from different inputs in different directions within the lens plane. It also includes a curved (e.g., semi-circular or arced) grating coupler that diffracts the collimated beams out of the lens plane. The beams can be steered in the plane by controlling the direction along which the lens is illuminated and out of the plane by varying the beam wavelength. Unlike other beam steering devices, this device can operate over an extremely wide field of view—up to 180°—without any aberrations off boresight. In other words, the beam quality is uniform in all directions, unlike with aplanatic lenses, thanks to the circular symmetry of the planar Luneburg lens, which may be composed of subwavelength features. The lens is also robust to misalignment and fabrication imperfections and can be made using standard CMOS processes.
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3.发明公开公开(公告)号：US20240195140A1
公开(公告)日：2024-06-13
申请号：US18286790
申请日：2022-04-12
CPC分类号： H01S3/109 , G02F1/354 , H01S3/1611 , H01S3/1643 , B82Y20/00
摘要： A principle which enables the generation of macroscopic Fock and sub-Poissonian states is disclosed. Generic components of the system include: an electromagnetic structure (possessing one or more electromagnetic resonances), a nonlinear electromagnetic element (such as a nonlinear crystal near or inside the structure), and a source of light. In one embodiment, stimulated gain is used to create large numbers of photons in a cavity, but with very low photon number noise (uncertainty) in the cavity, and thus acts as a Fock laser. This Fock laser is capable of producing these states due to a very sharp intensity-dependent gain (or loss) that selects a particular photon number. The disclosed system and method are robust against both atomic and optical decoherence. Various examples of the new Fock laser design are also described.
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公开(公告)号：US11579363B2
公开(公告)日：2023-02-14
申请号：US17496817
申请日：2021-10-08
发明人： Josue Lopez , Samuel Kim , Jamison Sloan , Boris Kharas , Jeffrey Scott Herd , Marin Soljacic , Cheryl Marie Sorace-Agaskar , Suraj Deepak Bramhavar , Steven Glenn Johnson , George Barbastathis
摘要： An integrated optical beam steering device includes a planar Luneburg lens that collimates beams from different inputs in different directions within the lens plane. It also includes a curved (e.g., semi-circular or arced) grating coupler that diffracts the collimated beams out of the lens plane. The beams can be steered in the plane by controlling the direction along which the lens is illuminated and out of the plane by varying the beam wavelength. Unlike other beam steering devices, this device can operate over an extremely wide field of view—up to 180°—without any aberrations off boresight. In other words, the beam quality is uniform in all directions, unlike with aplanatic lenses, thanks to the circular symmetry of the planar Luneburg lens, which may be composed of subwavelength features. The lens is also robust to misalignment and fabrication imperfections and can be made using standard CMOS processes.
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