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公开(公告)号：US20210141283A1
公开(公告)日：2021-05-13
申请号：US16891440
申请日：2020-06-03
Inventor： Leiran Wang , Qibing Sun , Wenfu Zhang , Chao Zeng , Weichen Fan , Wei Zhao
Abstract: A system for generating a mid-infrared optical frequency comb based on a lithium niobate microcavity includes pumping units, a beam combining unit, a nonlinear frequency conversion unit and a filtering unit. The pumping units are divided into two paths and are configured to provide two paths of pumping light. The beam combining unit is configured to perform beam combination on the two paths of pumping light The nonlinear frequency conversion unit is configured to receive the beam-combined pumping light and undergo a nonlinear four-wave mixing process to generate a broadband optical frequency comb at a mid-infrared waveband. The filtering unit is configured to filter the remaining pumping light and output a mid-infrared optical frequency comb.
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公开(公告)号：US20210088871A1
公开(公告)日：2021-03-25
申请号：US16700810
申请日：2019-12-02
Inventor： Qibing Sun , Leiran Wang , Wenfu Zhang , Aihu Zheng , Chao Zeng , Wei Zhao
Abstract: A device for high-speed real-time sampling of mid-infrared ultrafast light signals includes a time domain amplification unit and a detection unit. The time domain amplification unit is used to perform sampling and time domain amplification on signal light incident to the time domain amplification unit, and convert the signal light of a mid-infrared band into a near-infrared/visible band. The detection unit is used to receive and record information of the to-be-detected signal light processed by the time domain amplification unit to realize high-speed real-time sampling and measurement of the mid-infrared ultrafast light signal. The present disclosure can accurately obtain subpicosecond transient characteristics of the light signal, breaks through the capacity limit to the response rate of a traditional photoelectric detector, the bandwidth of the oscilloscope and the like, and is applicable to femtosecond-level mid-infrared ultrafast light signals.
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公开(公告)号：US11281070B2
公开(公告)日：2022-03-22
申请号：US16700810
申请日：2019-12-02
Inventor： Qibing Sun , Leiran Wang , Wenfu Zhang , Aihu Zheng , Chao Zeng , Wei Zhao
Abstract: A device for high-speed real-time sampling of mid-infrared ultrafast light signals includes a time domain amplification unit and a detection unit. The time domain amplification unit is used to perform sampling and time domain amplification on signal light incident to the time domain amplification unit, and convert the signal light of a mid-infrared band into a near-infrared/visible band. The detection unit is used to receive and record information of the to-be-detected signal light processed by the time domain amplification unit to realize high-speed real-time sampling and measurement of the mid-infrared ultrafast light signal. The present disclosure can accurately obtain subpicosecond transient characteristics of the light signal, breaks through the capacity limit to the response rate of a traditional photoelectric detector, the bandwidth of the oscilloscope and the like, and is applicable to femtosecond-level mid-infrared ultrafast light signals.
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4.发明授权公开(公告)号：US11085831B2
公开(公告)日：2021-08-10
申请号：US16576399
申请日：2019-09-19
Inventor： Qibing Sun , Chao Zeng , Leiran Wang , Wenfu Zhang , Wei Zhao
Abstract: A high-resolution real-time time-frequency domain measuring device includes a light splitting unit used to split signal light to be measured, a time lens unit used to perform time domain amplification on the signal light to be measured, a dispersion Fourier transform unit used to perform Fourier transform on the signal light to be measured, and a detection unit used to receive and detect measured data. The time lens and the dispersion Fourier transform technology are used to realize the real-time measurement of sub-picosecond transient characteristics of the ultra-short pulse to accurately obtain the time-frequency domain information of the ultra-short pulse.
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