Photodetector for scanning probe microscope

    公开(公告)号:US11169176B2

    公开(公告)日:2021-11-09

    申请号:US17193267

    申请日:2021-03-05

    Abstract: A detector device is presented for use in a surface probing system. The detector device comprises an integral semiconductor structure configured to define a cantilever and tip probe assembly, comprising at least one tip formed on the cantilever, wherein an apex portion of said at least one tip is configured as an apertured photodetector comprising a layered structure formed with an aperture of subwavelength dimensions and defining at least one depletion region and an electrical circuit, said subwavelength aperture allowing collection of evanescent waves created at a surface region and interaction of collected evanescent waves with the at least one depletion region thereby causing direct conversion of the collected evanescent waves into electric signals being read by the electrical circuit within said tip apex portion, said integral semiconductor structure being thereby capable of concurrently monitoring topographic and optical properties of the surface being scanned by the tip.

    OPTICAL NEURAL NETWORK UNIT AND OPTICAL NEURAL NETWORK CONFIGURATION

    公开(公告)号:US20210027154A1

    公开(公告)日:2021-01-28

    申请号:US17041333

    申请日:2019-03-26

    Abstract: An artificial neuron unit and neural network for processing of input light are described. The artificial neuron unit comprises a modal mixing unit, such as multimode optical fiber, configured for receiving input light and applying selected mixing to light components of two or more modes within the input light and for providing exit light, and a filtering unit configured for applying preselected filter onto said exit light for selecting one or more modes of the exit light thereby providing output light of the artificial neuron unit.

    METHOD AND SYSTEM FOR IMPROVING RESOLUTION OF A SPECTROMETER
    27.
    发明申请
    METHOD AND SYSTEM FOR IMPROVING RESOLUTION OF A SPECTROMETER 有权
    改进光谱仪分辨率的方法和系统

    公开(公告)号:US20150233829A1

    公开(公告)日:2015-08-20

    申请号:US14378710

    申请日:2013-02-11

    CPC classification number: G01N21/65 G01N2201/06113 G01N2201/126

    Abstract: The present disclosure provides systems and methods for improving the resolution of a spectrometer configured to provide a frequency spectrum of a radiation incoming from a sample. The system comprises an optical medium configured so that the radiation incoming from the sample be transferred through the optical medium, the optical medium having a predetermined tunable spectral transmission curve; an operating unit connectable to the optical medium and configured to operate the optical medium so as to shift the spectral transmission curve of the optical medium over a predetermined spectral range; and a processing unit connectable to the spectrometer and configured to process a set of shifted frequency spectra provided by the spectrometer and obtainable by transferring the radiation incoming from the sample through the optical medium while shifting the spectral transmission curve of the optical medium so as to obtain a super resolved frequency spectrum of improved spectral resolution.

    Abstract translation: 本公开提供了用于改进配置为提供从样品进入的辐射的频谱的光谱仪的分辨率的系统和方法。 该系统包括光学介质,其被配置为使得从样品入射的辐射通过光学介质传输,光学介质具有预定的可调谐光谱透射曲线; 操作单元,其可连接到所述光学介质并且被配置为操作所述光学介质,以便使光学介质的光谱传输曲线在预定的光谱范围内移动; 以及处理单元,其可连接到所述光谱仪并且被配置为处理由所述光谱仪提供的一组移动的频谱,并且可以通过在移动所述光学介质的光谱透射曲线的同时转移通过所述光学介质从所述样品入射的辐射而获得, 一种改进的光谱分辨率的超解析频谱。

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