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公开(公告)号：US20200280174A1
公开(公告)日：2020-09-03
申请号：US16804442
申请日：2020-02-28
Inventor： Duhyun LEE , Muhammad ALAM , Ghazaleh KAFAIE SHIRMANESH , Harry ATWATER , Pin Chieh WU , Ragip PALA
Abstract: A light modulation element according to example embodiments includes a substrate; a first lower DBR layer on the substrate including a first material layer alternately stacked with a second material layer having a different refractive index from the first material layer; a second lower DBR layer on the first lower DBR layer with a surface area less than the first lower DBR layer and including a third material layer alternately stacked with a fourth material layer having a different refractive index from the third material layer; an active layer on the second lower DBR layer, including a semiconductor material having a multi-quantum well structure and having a refractive index that varies according to an applied voltage; and an upper DBR layer on the active layer including a fifth material layer alternately stacked with a sixth material layer having a different refractive index from the fifth material layer.
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公开(公告)号：US20230016681A1
公开(公告)日：2023-01-19
申请号：US17948026
申请日：2022-09-19
Inventor： Duhyun LEE , Muhammad ALAM , Harry ATWATER , Ragip PALA , Byunghoon NA , Seunghoon HAN
Abstract: Provided are an optical modulating device and a system including the optical modulating device. The optical modulating device includes a substrate, and a phase modulator formed on the substrate and including a Fabry-Perot cavity. The Fabry-Perot cavity of the phase modulator includes a first reflective layer, a second reflective layer, and a tunable core formed between the first reflective layer and the second reflective layer, wherein the tunable core is formed of a semiconductor material and is configured to modulate a phase of light corresponding to modulation of a refractive index of the tunable core according to electrical control.
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公开(公告)号：US20180196138A1
公开(公告)日：2018-07-12
申请号：US15867015
申请日：2018-01-10
Inventor： Duhyun LEE , Muhammad ALAM , Harry ATWATER , Ragip PALA , Byunghoon NA , Seunghoon HAN
CPC classification number: G01S17/02 , G01S7/481 , G01S7/4817 , G02F1/01716 , G02F1/21 , G02F1/292 , G02F2001/0151 , G02F2001/213 , G02F2202/30
Abstract: Provided are an optical modulating device and a system including the optical modulating device. The optical modulating device includes a substrate, and a phase modulator formed on the substrate and including a Fabry-Perot cavity. The Fabry-Perot cavity of the phase modulator includes a first reflective layer, a second reflective layer, and a tunable core formed between the first reflective layer and the second reflective layer, wherein the tunable core is formed of a semiconductor material and is configured to modulate a phase of light corresponding to modulation of a refractive index of the tunable core according to electrical control.
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公开(公告)号：US20190129206A1
公开(公告)日：2019-05-02
申请号：US16170573
申请日：2018-10-25
Inventor： Duhyun LEE , Ruzan SOKHOYAN , Yu-Jung LU , Ghazaleh KAFAIE SHIRMANESH , Harry ATWATER , Ragip PALA , Chanwook BAIK
Abstract: An optical modulating device may include a plurality of quantum dot (QD)-containing layers having QDs and a plurality of refractive index change layers. The QD-containing layers may be disposed between the refractive index change layers, respectively. The optical modulating device may be configured to modulate light-emission characteristics of the plurality of QD-containing layers. At least two of the QD-containing layers may have different central emission wavelengths. At least two of the plurality of refractive index change layers may include different materials or have different carrier densities.
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公开(公告)号：US20190107740A1
公开(公告)日：2019-04-11
申请号：US16156628
申请日：2018-10-10
Inventor： Duhyun LEE , Ruzan SOKHOYAN , Yu-Jung LU , Ghazaleh Kafaie SHIRMANESH , Harry ATWATER , Ragip PALA , Chanwook BAIK
IPC: G02F1/03
Abstract: Provided is a quantum dot (QD) light modulator and an apparatus including the QD light modulator. The QD light modulator may include a QD-containing layer including QDs having light-emission characteristics, a refractive index change layer arranged adjacent to the QD-containing layer, and a reflector arranged facing the QD-containing layer. The refractive index change layer may include a carrier density change area in which a carrier density changes, and the carrier density change area may be arranged adjacent to the QD-containing layer. The light-emission characteristics of the QD-containing layer may be modulated according to a change in a property of the refractive index change layer. The QD light modulator may further include a nano-antenna structure arranged on the QD-containing layer.
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Patent Agency Ranking
公开(公告)号：US20190101448A1
公开(公告)日：2019-04-04
申请号：US16146523
申请日：2018-09-28
Inventor： Duhyun LEE , Andrei FARAON , Ehsan ARBABI , Sadegh FARAJI-DANA , Mahsa Seyedeh KAMALI , Yu HORIE , Chanwook BAIK
IPC: G01J4/04
Abstract: A polarimeter for measuring a polarization rotation caused by a measurement object is provided, the polarimeter including an optically active material. The polarimeter includes a light source unit for irradiating a measurement object with light having a specific polarization; an anisotropic meta surface element for splitting reaction light, obtained by reacting the light of the specific polarization irradiated by the light source unit with the measurement object, into first and second reaction light; and a detection unit for detecting the first and second reaction light separated by the anisotropic meta surface element according to polarization. The polarization rotation caused by the measurement object may be calculated by comparing detection signals of the first and second reaction light detected by the detection unit.
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公开(公告)号：US20200284904A1
公开(公告)日：2020-09-10
申请号：US16884850
申请日：2020-05-27
Inventor： Duhyun LEE , Muhammad ALAM , Harry ATWATER , Ragip PALA , Byunghoon NA , Seunghoon HAN
Abstract: Provided are an optical modulating device and a system including the optical modulating device. The optical modulating device includes a substrate, and a phase modulator formed on the substrate and including a Fabry-Perot cavity. The Fabry-Perot cavity of the phase modulator includes a first reflective layer, a second reflective layer, and a tunable core formed between the first reflective layer and the second reflective layer, wherein the tunable core is formed of a semiconductor material and is configured to modulate a phase of light corresponding to modulation of a refractive index of the tunable core according to electrical control.
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8.发明申请公开(公告)号：US20190131491A1
公开(公告)日：2019-05-02
申请号：US16175113
申请日：2018-10-30
Inventor： Duhyun LEE , Ruzan SOKHOYAN , Yu-Jung LU , Ghazaleh KAFAIE SHIRMANESH , Harry A. ATWATER , Ragip A. PALA , Chan-Wook BAIK
Abstract: Provided are light emission devices including an output coupler and optical apparatuses having the same. The light emission device may include a QD layer containing quantum dots and a nano-antenna structure including an output coupler configured to control an output characteristic of light emitted from the QD layer. The output coupler may be configured to output an emission wavelength of the QD layer. The nano-antenna structure may include one of a metallic antenna, a dielectric antenna, and a slit-containing structure, or may have a multi-patch antenna structure or a fishbone antenna structure.
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公开(公告)号：US20180196137A1
公开(公告)日：2018-07-12
申请号：US15866998
申请日：2018-01-10
Inventor： Duhyun LEE , Ragip PALA , Harry ATWATER , Muhammad ALAM , Byunghoon NA , Seunghoon HAN
CPC classification number: G01S17/02 , G01S7/481 , G01S7/4817 , G02F1/01716 , G02F1/21 , G02F1/292 , G02F2001/0151 , G02F2202/30 , G02F2203/15 , G02F2203/50
Abstract: Provided are an optical modulating device and a system employing the same. The optical modulating device includes a phase modulator including a meta surface including a nanoantenna configured to couple light incident on the phase modulator, and including a quantum well layer having a multi-quantum well and configured to modulate a phase of light by modulating a refractive index according to an electrical control, and a reflective layer provided at on the phase modulator opposite to a side of the meta surface of the phase modulator and configured to resonate light coupled through the nanoantenna.
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公开(公告)号：US20230213390A1
公开(公告)日：2023-07-06
申请号：US17836568
申请日：2022-06-09
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Jinmyoung KIM , Byonggwon SONG , Yooseong YANG , Duhyun LEE , Byungkyu LEE
CPC classification number: G01J5/20 , G01J5/58 , G01J2005/202
Abstract: A long wavelength infrared sensor includes a first magnetoresistive unit; a second magnetoresistive unit; and a light absorption layer that absorbs light and emits heat, wherein the first magnetoresistive unit includes a first magnetoresistive element and a second magnetoresistive element electrically connected to each other, the second magnetoresistive unit includes a third magnetoresistive element and a fourth magnetoresistive element electrically connected to each other, the first and third magnetoresistive elements each have an antiparallel state of magnetization direction, the second and fourth magnetoresistive elements each have a parallel state of magnetization direction, and the first magnetoresistive element is electrically connected to the third magnetoresistive element by way of the second magnetoresistive element.
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