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公开(公告)号：US20240094439A1
公开(公告)日：2024-03-21
申请号：US18269939
申请日：2021-12-27
Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
Inventor： Noah A. RUBIN , Mohammad Aun Abbas ZAIDI , Federico CAPASSO
CPC classification number: G02B1/08 , G02B5/3083 , G02B5/32 , G02B27/286 , G02B27/4261
Abstract: An optical component can include a substrate. The optical component can include a metasurface disposed on the substrate. The metasurface can include one or more linearly birefringent elements. A spatially-varying Jones matrix and a far-field of the metasurface can define a transfer function of the metasurface configured to generate a controlled response in the far-field according to polarization of light incident on the metasurface.
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公开(公告)号：US20230085245A1
公开(公告)日：2023-03-16
申请号：US17940993
申请日：2022-09-08
Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
Inventor： Xinghui YIN , Federico CAPASSO
IPC: G02B1/00
Abstract: Disclosed is a broadband achromatic metasurface waveplate including a device that includes a plurality of nanostructures physically coupled to a substrate and formed at least partially of a dielectric material having a first refractive index and an anti-reflective film applied to a surface of the device. The anti-reflective film may include a material having a second refractive index that is less than the first refractive index. The device and the anti-reflective film may modify incident light with wavelengths extending over a bandwidth of at least 100 nanometers to impart a substantially uniform phase retardation across the wavelengths and a transmittance of at least 90 percent across the wavelengths.
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公开(公告)号：US20190162592A1
公开(公告)日：2019-05-30
申请号：US16091976
申请日：2017-04-07
Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
Inventor： Mohammadreza KHORASANINEJAD , Federico CAPASSO , Wei Ting CHEN , Jaewon OH
Abstract: A meta-lens having a phase profile includes a substrate and a plurality of nanostructures disposed on the substrate. The nanostructures together define the phase profile of the meta-lens. The phase profile achieves an off-axis focus. Each nanostructure is designed according to at least one design parameter of the nanostructure that imparts a phase shift of light passing through the nanostructure.
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公开(公告)号：US20190025477A1
公开(公告)日：2019-01-24
申请号：US16040363
申请日：2018-07-19
Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
Inventor： Alan Jenting SHE , Shuyan ZHANG , Federico CAPASSO
Abstract: A method of generating a layout data file for a metasurface device is disclosed. At a radial position of a metasurface device, the method determines a primitive cell of a first level having a metasurface feature pattern that is repeated around an arc corresponding to a circumference at the radial position. The method generates metasurface structures of higher levels. Each metasurface structure of a higher level includes multiple references to a structure or a primitive cell of a next lower level. The method stores at least a portion of a layout of the metasurface device to a layout data file. The layout includes references to metasurface structures of two or more of the higher levels.
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公开(公告)号：US20240231118A1
公开(公告)日：2024-07-11
申请号：US18559038
申请日：2022-05-04
Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
Inventor： Dean Samer HAZINEH , Zhujun SHI , Qi GUO , Todd ZICKLER , Federico CAPASSO
CPC classification number: G02B27/286 , G01B11/24 , G02B3/08 , G02B27/288
Abstract: Disclosed is a sensor for determining a physical characteristic, comprising a linear polarizer, a polarization-sensitive metalens, positioned between the linear polarizer and a photosensor, configured to manipulate light from a scene filtered by the linear polarizer, according to two or more phase profiles to simultaneously produce at least two spatial frequency filtered images on a surface of the photosensor, and processing circuitry configured to receive, from the photosensor, a measurement corresponding to the at least two spatial frequency filtered images, and determine, according to the measurement, a depth associated with at least one feature in the scene.
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Patent Agency Ranking
公开(公告)号：US20240142686A1
公开(公告)日：2024-05-02
申请号：US18528721
申请日：2023-12-04
Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
Inventor： Noah A. RUBIN , Federico CAPASSO
CPC classification number: G02B5/3025 , G01J4/04
Abstract: The present disclosure provides an optical component, which may be a metasurface grating, including (a) a substrate; and (b) an array of subwavelength-spaced phase-shifting elements, which are tessellated on the substrate to produce, when illuminated with a polarized incident light, a diffracted light beam with a distinct polarization state for each of a finite number of diffraction orders, wherein the finite number is 2 or more.
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公开(公告)号：US20230324612A1
公开(公告)日：2023-10-12
申请号：US18013539
申请日：2021-07-01
Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
Inventor： Vincent GINIS , Marco PICCARDO , Michele TAMAGNONE , Federico CAPASSO
IPC: G02B6/14
CPC classification number: G02B6/14
Abstract: A device includes a first mode converter and a second mode converter that define a region between the first mode converter and the second mode converter. The region can contain a plurality of optical modes including at least three modes. The first mode converter and the second mode converter can generate a near-field via a conversion between the plurality of optical modes. The first mode converter can receive an input wave of a first mode and the second mode converter can generate an output wave of a second mode different from the first mode. The first mode converter and the second mode converter can generate a confined near-field via a conversion between the plurality of optical modes.
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公开(公告)号：US20230021549A1
公开(公告)日：2023-01-26
申请号：US17579460
申请日：2022-01-19
Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
Inventor： Soon Wei Daniel LIM , Joon-Suh PARK , Maryna Leonidivna MERETSKA , Federico CAPASSO , Ahmed Hassen Dorrah
Abstract: Disclosed is a method of generating a functional singularity at a point or collection of points. The method may include determining a relationship between one or more parameters associated with a physical structure and a spatial gradient of field values of at least one of electromagnetic energy, sound energy, particle beam, or water waves manipulated by the physical structure, configuring, according to the relationship, the spatial gradient of field values to represent a functional singularity at a point, performing backpropagation using the spatial gradient of field values to obtain design parameters corresponding to values for the one or more parameters that achieve the functional singularity at the point, and producing a physical structure having the design parameters.
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公开(公告)号：US20220128734A1
公开(公告)日：2022-04-28
申请号：US17512560
申请日：2021-10-27
Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
Inventor： Maryna Leonidivna MERETSKA , Soon Wei Daniel LIM , Federico CAPASSO
Abstract: An optical device includes a membrane. The membrane includes a plurality of apertures extending at least partially through a thickness of the membrane. The membrane is configured to structure incoming light having a wavelength to produce modified light. The wavelength of the incoming light in vacuum is in a range of ultraviolet light and mid-infrared. The membrane is configured to reflect the modified light away from the membrane or transmit the modified light through the membrane. A separation between each of the plurality of apertures is subwavelength relative to the wavelength of the incoming light. A width of each of the plurality of apertures is subwavelength relative to the wavelength of the incoming light. A length of each of the plurality of apertures is wavelength-scale relative to the wavelength of the incoming light.
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公开(公告)号：US20200335947A1
公开(公告)日：2020-10-22
申请号：US16956294
申请日：2018-12-20
Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
Inventor： Marco PICCARDO , Dmitry KAZAKOV , Federico CAPASSO , Paul CHEVALIER
Abstract: A wireless communication device includes a quantum cascade laser (QCL) configured to generate a terahertz (THz) or microwave carrier signal. The QCL includes a laser waveguide, a laser optical gain medium incorporated in the laser waveguide, and at least one electrode. An antenna may be integrated with the electrode. The device may be a transmitter, the electrode configured to receive an input baseband signal, the QCL configured to couple the THz or microwave carrier signal and the input baseband signal into a THz or microwave communication signal, and the antenna configured to transmit the THz or microwave communication signal. The device may be a receiver, the antenna configured to receive a THz or microwave communication signal, and the QCL configured to de-couple the THz or microwave communication signal from the THz or microwave carrier signal into an output baseband signal.
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