Implementation method of superconducting nanowire single-pixel spectrometer with programmable responsivity
A technology of superconducting nanowires and implementation methods, which is applied in the field of miniature single-pixel spectrometers, and can solve problems such as bulky, no spectral resolution ability, and inability to meet compact applications.
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[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0021] The superconducting nanowire single photon detector is a photon counting detector, and the measured light intensity can be characterized by the counting rate of the detector. It consists of superconducting thin-film nanowires biased with an electric current, such as figure 2 Shown in part a. When a photon is absorbed by the nanowire, an electrical pulse is generated probabilistically. This probability and the magnitude of the bias current are related to the energy of the photon. As the bias current is increased, the cutoff wavelength of the detector response shifts to longer wavelengths, such as figure 1 Shown in part b. That is to say, when biased at different currents, the spectral responsivity of the detector is linearly independent, that is, the present invention has discovered that the superconducting nanowire single photon detector has diffe...
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