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公开(公告)号：US11733552B2
公开(公告)日：2023-08-22
申请号：US17219607
申请日：2021-03-31
发明人： Yu Yao , Ali Basiri
IPC分类号： G02F1/01
CPC分类号： G02F1/0147 , G02F2202/30 , G02F2203/10 , G02F2203/11
摘要： An optical device is disclosed. The optical device includes a silicon substrate, an aluminum oxide layer, an aluminum layer between the silicon substrate and the aluminum oxide layer, and a metasurface nanostructure. The metasurface nanostructure may include a graphene monolayer on the aluminum oxide layer and an electrically conductive nanoantenna array in direct contact with the graphene monolayer, where each nanoantenna in the nanoantenna array may include multiple segments, each segment having one or more parameters selected to achieve simultaneous resonance in the mid-infrared and the near infrared spectral regions when the graphene monolayer is irradiated with a near infrared pump pulse and a continuous mid-infrared probe. The optical device generates mid-infrared pulses via ultrafast modulation of hot carriers in the monolayer graphene.
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公开(公告)号：US11385104B2
公开(公告)日：2022-07-12
申请号：US16956988
申请日：2018-12-21
发明人： Yu Yao , Chao Wang , Chu Wang , Jing Bai , Ali Basiri , Xiahui Chen
摘要： A polarization sensor is described. It includes a quarter-wave plate to convert circularly polarized light into linearly polarized light. The quarter-wave plate is realized as a metasurface. The sensor also includes a linear polarizer to analyze the light generated by the quarter-wave plate, and a photodetector to receive the analyzed light. The sensor may be combined with other linear polarization sensors to form a sensor capable of complete measurement of the polarization state of incident light. An array of these sensors can be integrated directly onto image sensors to form a polarimetric imager.
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公开(公告)号：US20210302763A1
公开(公告)日：2021-09-30
申请号：US17219607
申请日：2021-03-31
发明人： Yu Yao , Ali Basiri
IPC分类号： G02F1/01
摘要： An optical device is disclosed. The optical device includes a silicon substrate, an aluminum oxide layer, an aluminum layer between the silicon substrate and the aluminum oxide layer, and a metasurface nanostructure. The metasurface nanostructure may include a graphene monolayer on the aluminum oxide layer and an electrically conductive nanoantenna array in direct contact with the graphene monolayer, where each nanoantenna in the nanoantenna array may include multiple segments, each segment having one or more parameters selected to achieve simultaneous resonance in the mid-infrared and the near infrared spectral regions when the graphene monolayer is irradiated with a near infrared pump pulse and a continuous mid-infrared probe. The optical device generates mid-infrared pulses via ultrafast modulation of hot carriers in the monolayer graphene.
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公开(公告)号：US20210190593A1
公开(公告)日：2021-06-24
申请号：US16956988
申请日：2018-12-21
发明人： Yu Yao , Chao Wang , Chu Wang , Jing Bai , Ali Basiri , Xiahui Chen
摘要： A polarization sensor is described. It includes a quarter-wave plate to convert circularly polarized light into linearly polarized light. The quarter-wave plate is realized as a metasurface. The sensor also includes a linear polarizer to analyze the light generated by the quarter-wave plate, and a photodetector to receive the analyzed light. The sensor may be combined with other linear polarization sensors to form a sensor capable of complete measurement of the polarization state of incident light. An array of these sensors can be integrated directly onto image sensors to form a polarimetric imager.
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公开(公告)号：US12117344B2
公开(公告)日：2024-10-15
申请号：US17743937
申请日：2022-05-13
发明人： Yu Yao , Chao Wang , Chu Wang , Jing Bai , Ali Basiri , Xiahui Chen
CPC分类号： G01J4/04 , G02B5/3025
摘要： A method of fabricating a polarization sensor is described. It includes a quarter-wave plate to convert circularly polarized light into linearly polarized light. The quarter-wave plate is realized as a metasurface. The sensor also includes a linear polarizer to analyze the light generated by the quarter wave plate, and a photodetector to receive the analyzed light. The sensor may be combined with other linear polarization sensors to form a sensor capable of complete measurement of the polarization state of incident light.
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公开(公告)号：US20220268633A1
公开(公告)日：2022-08-25
申请号：US17743937
申请日：2022-05-13
发明人： Yu Yao , Chao Wang , Chu Wang , Jing Bai , Ali Basiri , Xiahui Chen
摘要： A method of fabricating a polarization sensor is described. It includes a quarter-wave plate to convert circularly polarized light into linearly polarized light. The quarter-wave plate is realized as a metasurface. The sensor also includes a linear polarizer to analyze the light generated by the quarter wave plate, and a photodetector to receive the analyzed light. The sensor may be combined with other linear polarization sensors to form a sensor capable of complete measurement of the polarization state of incident light.
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