Solid-state photomultiplier module with improved signal-to-noise ratio
AssigneeGeneral Electric Company
InventorGin-Chung Jimmy Wang
Life of this patent
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Abstract
A scanning imaging system is provided. The scanning imaging system comprises an illumination source for illuminating a sample with an excitation light, a filter to block emission light wavelengths from the illumination source. Further, the scanning imaging system comprises a SSPM module comprising a solid state photo multiplier to detect a photon flux and generate electrical signals based on impinging photons; a conditioning circuit to accumulate charge from the SSPM and a micro-controller to change a bias voltage applied to the SSPM to achieve a higher signal-to-noise ratio.
Claims19
A solid-state photomultiplier module, comprising:
- a solid-state photomultiplier;
- and
- a micro-controller configured to adaptively change a bias voltage applied to the solid-state photo multiplier to obtain a higher signal-to-noise ratio based on a photon flux from a sample.
A method for optimizing SNR in an SSPM comprising:
- estimating a photon flux with an initial bias voltage;
- calculating an optimum bias voltage based on calibration;
- and
- supplying the optimum bias voltage to calculate an exact photon flux.
A scanning imaging system, comprising:
- an illumination source for illuminating a sample with excitation light;
- a filter to block emission light wavelengths from the illumination source;
- and
- a SSPM module comprising:
- a solid-state photo multiplier;
- and
- a micro-controller configured to adaptively change a bias voltage applied to the solid-state photo multiplier for an optimized signal to noise ratio.
A scanning imaging system comprising:
- an illumination source for illuminating a sample with an excitation light;
- a filter to block emission light wavelengths from the illumination source;
- and
- a SSPM module comprising:
- a solid state photo multiplier to detect a photon flux and generate electrical signals based on impinging photons;
- a conditioning circuit to accumulate charge from the SSPM;
- and
- a micro-controller to change a bias voltage applied to the SSPM to achieve a higher signal-to-noise ratio.
Dependencies are inferred from the claim text.