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1. 发明申请

WO2019103762A3 TOPOLOGY OPTIMIZED MULTI-LAYERED META-OPTICS 审中-公开
公开(公告)号：WO2019103762A3
公开(公告)日：2019-05-31
申请号：PCT/US2018/038357
申请日：2018-06-19
申请人： PRESIDENT AND FELLOWS OF HARVARD COLLEGE , PRINCETON UNIVERSITY
发明人： LIN, Zin , CAPASSO, Federico , RODRIGUEZ, Alejandro W. , LONCAR, Marko , GROEVER, Benedikt
IPC分类号： G02B1/00 , G02B27/00
摘要： A multi-layered lens comprises a plurality of metasurface layers. At least some layers of the plurality of metasurface layers include features that exhibit angular phase controls. The angular phases of the at least some layers cause an angular aberration correction or an angle convergence that focuses light onto a focal point regardless of angles of incidence.

2. 发明申请

WO2019103762A9 TOPOLOGY OPTIMIZED MULTI-LAYERED META-OPTICS 审中-公开
公开(公告)号：WO2019103762A9
公开(公告)日：2019-05-31
申请号：PCT/US2018/038357
申请日：2018-06-19
申请人： PRESIDENT AND FELLOWS OF HARVARD COLLEGE , PRINCETON UNIVERSITY
发明人： LIN, Zin , CAPASSO, Federico , RODRIGUEZ, Alejandro W. , LONCAR, Marko , GROEVER, Benedikt
IPC分类号： G02B1/00 , G02B27/00
摘要： A multi-layered lens comprises a plurality of metasurface layers. At least some layers of the plurality of metasurface layers include features that exhibit angular phase controls. The angular phases of the at least some layers cause an angular aberration correction or an angle convergence that focuses light onto a focal point regardless of angles of incidence.

3. 发明申请

WO2019103762A2 TOPOLOGY OPTIMIZED MULTI-LAYERED META-OPTICS 审中-公开
公开(公告)号：WO2019103762A2
公开(公告)日：2019-05-31
申请号：PCT/US2018/038357
申请日：2018-06-19
申请人： PRESIDENT AND FELLOWS OF HARVARD COLLEGE , PRINCETON UNIVERSITY
发明人： LIN, Zin , CAPASSO, Federico , RODRIGUEZ, Alejandro W. , LONCAR, Marko , GROEVER, Benedikt
IPC分类号： G02B3/00
摘要： A multi-layered lens comprises a plurality of metasurface layers. At least some layers of the plurality of metasurface layers include features that exhibit angular phase controls. The angular phases of the at least some layers cause an angular aberration correction or an angle convergence that focuses light onto a focal point regardless of angles of incidence.

4. 发明申请

WO2022051021A2 ELECTROMAGNETIC WAVEGUIDES USING CASCADED MODE CONVERSION 审中-公开
公开(公告)号：WO2022051021A2
公开(公告)日：2022-03-10
申请号：PCT/US2021/040195
申请日：2021-07-01
申请人： PRESIDENT AND FELLOWS OF HARVARD COLLEGE
发明人： GINIS, Vincent , PICCARDO, Marco , TAMAGNONE, Michele , CAPASSO, Federico
IPC分类号： G02B6/14 , G02B6/122 , G02B6/26 , G02B6/27 , H01P1/16 , H04B10/2581 , G02B6/10
摘要： 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.

5. 发明申请

WO2018222944A1 PLANAR ACHROMATIC AND DISPERSION-TAILORED META-SURFACES IN VISIBLE SPECTRUM 审中-公开
公开(公告)号：WO2018222944A1
公开(公告)日：2018-12-06
申请号：PCT/US2018/035502
申请日：2018-05-31
申请人： PRESIDENT AND FELLOWS OF HARVARD COLLEGE
发明人： CHEN, Wei Ting , SANJEEV, Vyshakh , ZHU, Alexander Yutong , KHORASANINEJAD, Mohammadreza , SHI, Zhujun , CAPASSO, Federico
IPC分类号： G08B5/18 , B82Y10/00 , B82Y35/00 , B82Y40/00 , H01F10/32 , H01Q15/02
摘要： An optical device comprises a metasurface including a plurality of nanostructures. The nanostructures define a phase profile and a group delay profile at a design wavelength. The phase profile and the group delay profile determine and control the functionalities and the chromatic dispersion of the metasurface.

6. 发明申请

WO2018118984A1 ULTRA-COMPACT, ABERRATION CORRECTED, VISIBLE CHIRAL SPECTROMETER WITH META-LENSES 审中-公开
公开(公告)号：WO2018118984A1
公开(公告)日：2018-06-28
申请号：PCT/US2017/067411
申请日：2017-12-19
申请人： PRESIDENT AND FELLOWS OF HARVARD COLLEGE
发明人： ZHU, Alexander. Yutong , CHEN, Wei Ting , KHORASANINEJAD, Mohammadreza , OH, Jaewon , ZAIDI, Aun , DEVLIN, Robert, Charles , CAPASSO, Federico
IPC分类号： G02B1/00 , G02B3/00 , G02B5/00 , G02B5/30 , G02B6/32 , G02B27/28
CPC分类号： G02B1/002 , G01J3/0208 , G01J3/0224 , G01J3/18 , G02B5/1809 , G02B5/1861 , G02B6/32
摘要： An optical device includes: (1) a substrate; and (2) multiple meta-lenses disposed on the substrate, each meta-lens of the meta-lenses including multiple nanofins disposed on a respective region of the substrate, the nanofins together specifying a phase profile of the meta-lens.

7. 发明申请

WO2018067246A3 ARBITRARY POLARIZATION-SWITCHABLE METASURFACES 审中-公开
公开(公告)号：WO2018067246A3
公开(公告)日：2018-04-12
申请号：PCT/US2017/048469
申请日：2017-08-24
申请人： PRESIDENT AND FELLOWS OF HARVARD COLLEGE
发明人： RUBIN, Noah A. , MUELLER, Jan Philipp Balthasar , CAPASSO, Federico
IPC分类号： G02B5/02 , G02B5/30
摘要： An optical component comprises a metasurface comprising nanoscale elements. The metasurface is configured to receive incident light and to generate optical outputs. The geometries and/or orientations of the nanoscale elements provide a first optical output upon receiving a polarized incident light with a first polarization, and provide a second optical output upon receiving a polarized incident light with a second polarization that is different from the first polarization.

8. 发明申请

WO2018009258A3 SUPER-DISPERSIVE OFF-AXIS META-LENSES FOR HIGH RESOLUTION COMPACT SPECTROSCOPY 审中-公开
公开(公告)号：WO2018009258A3
公开(公告)日：2018-01-11
申请号：PCT/US2017/026704
申请日：2017-04-07
申请人： PRESIDENT AND FELLOWS OF HARVARD COLLEGE
发明人： KHORASANINEJAD, Mohammadreza , CAPASSO, Federico , CHEN, Wei Ting , OH, Jaewon
IPC分类号： B82Y20/00 , G01J3/02
摘要： 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.

9. 发明申请

WO2012021333A2 BROADBAND QUANTUM CASCADE LASER SOURCE 审中-公开
标题翻译：宽带量子CASCADE激光源
公开(公告)号：WO2012021333A2
公开(公告)日：2012-02-16
申请号：PCT/US2011/046265
申请日：2011-08-02
申请人： PRESIDENT AND FELLOWS OF HARVARD COLLEGE , CAPASSO, Federico , PFLUGL, Christian , DIEHL, Laurent , BLANCHARD, Romain
发明人： CAPASSO, Federico , PFLUGL, Christian , DIEHL, Laurent , BLANCHARD, Romain
IPC分类号： H01S5/40 , H01S5/34 , H01S3/02
CPC分类号： H01S5/125 , B82Y20/00 , H01S5/141 , H01S5/22 , H01S5/3402 , H01S5/4043 , H01S5/4087 , H01S5/50
摘要： A broadband quantum cascade laser (QCL) source includes one or more QCLs having an active region designed based on a diagonal laser transition. The QCL source may include multiple QCLs formed in an array or the QCL source may comprise a single QCL device. Although each QCL provides an emission spectrum comprising a small range of wavelengths at a given applied voltage, changes in the applied operating voltage result in changes in the emission spectrum of the QCL due to the Stark shift. When the QCL source comprises a plurality of QCLs formed in an array, at least some of the elements in the array may receive different applied operating voltages such that the combined output spectrum of the array is broader than that achievable by a single QCL. When the QCL source comprises a single QCL device, an applied operating voltage may be swept through a range of applied voltages such that that combined output spectrum over one sweep cycle is broader than the output spectrum of the QCL device when a static operating voltage is applied. Alternatively, the single QCL device may comprise multiple independent gain sections, wherein each of the independent gain sections is configured to operate at a different voltages to provide a broadband output spectrum.
摘要翻译：宽带量子级联激光器（QCL）源包括具有基于对角激光器转换设计的有源区域的一个或多个QCL。 QCL源可以包括在阵列中形成的多个QCL，或者QCL源可以包括单个QCL设备。虽然每个QCL提供了在给定的施加电压下包括小范围的波长的发射光谱，但是施加的工作电压的变化导致由于斯塔克位移引起的QCL的发射光谱的变化。当QCL源包括以阵列形成的多个QCL时，阵列中的至少一些元件可以接收不同的施加的工作电压，使得阵列的组合输出光谱比单个QCL可实现的更宽。当QCL源包括单个QCL器件时，所施加的工作电压可以扫过所施加的电压范围，使得当施加静态工作电压时，在一个扫描周期上的组合输出光谱宽于QCL器件的输出光谱。或者，单个QCL器件可以包括多个独立增益部分，其中每个独立增益部分被配置为在不同的电压下工作以提供宽带输出光谱。

10. 发明申请

WO2010059180A2 METHODS AND APPARATUS FOR SINGLE-MODE SELECTION IN QUANTUM CASCADE LASERS 审中-公开
标题翻译：用于量子级联激光器中的单模选择的方法和设备
公开(公告)号：WO2010059180A2
公开(公告)日：2010-05-27
申请号：PCT/US2009/005982
申请日：2009-11-05
申请人： PRESIDENT AND FELLOWS OF HARVARD COLLEGE , CAPASSO, Federico , LEE, Benjamin, G. , PFLUGL, Christian , DIEHL, Laurent , BELKIN, Mikhail, A.
发明人： CAPASSO, Federico , LEE, Benjamin, G. , PFLUGL, Christian , DIEHL, Laurent , BELKIN, Mikhail, A.
IPC分类号： H01S5/40 , H01S3/23 , H01S5/00
CPC分类号： H01S5/1228 , B82Y20/00 , H01S5/0014 , H01S5/0287 , H01S5/0654 , H01S5/1231 , H01S5/305 , H01S5/3211 , H01S5/3401
摘要： Methods and apparatus for improved single-mode selection in a quantum cascade laser. In one example, a distributed feedback grating incorporates both index-coupling and loss-coupling components. The loss-coupling component facilitates selection of one mode from two possible emission modes by periodically incorporating a thin layer of "lossy" semiconductor material on top of the active region to introduce a sufficiently large loss difference between the two modes. The lossy layer is doped to a level sufficient to induce considerable free-carrier absorption losses for one of the two modes while allowing sufficient gain for the other of the two modes. In alternative implementations, the highly-doped layer may be replaced by other low-dimensional structures such as quantum wells, quantum wires, and quantum dots with significant engineered intraband absorption to selectively increase the free-carrier absorption losses for one of multiple possible modes so as to facilitate single-mode operation.
摘要翻译：用于量子级联激光器中改进的单模选择的方法和装置在一个示例中，分布式反馈光栅结合了折射率耦合和损耗耦合两者。损失耦合组件有助于从两种可能的发射模式中选择一种模式，即周期性地将“有损耗” 半导体材料在有源区的顶部上，以在两种模式之间引入足够大的损耗差异。将有损耗层掺杂到足以为两种模式中的一种引起相当大的自由载流子吸收损失的水平，同时为两种模式中的另一种提供足够的增益。在替代实施方式中，高度掺杂的层可以被其他低维结构（例如量子阱，量子线和量子点）所取代，其具有显着的设计的带内吸收以选择性地增加多种可能模式之一的自由载流子吸收损耗以促进单模式操作。

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