Photon counter based on magnetic mirror and method for detecting photon

Abstract

The invention discloses a photon counter based on a magnetic mirror; a glass window is arranged on the pipe wall of a pipe shell, the inner surface of the glass window is provided with a photocathode, four groups of focusing electrodes and microchannel plates are arranged in the pipe shell, the four groups of focusing electrodes are enclosed into a rectangular cavity, the outer side of a focusingelectrode b is sequentially provided with the microchannel plates and anodes at intervals, the upper and the lower ports of a microchannel plate are in alignment with the upper and the lower ports ofthe focusing electrode b, and a magnetic mirror structure is arranged in the rectangular cavity enclosed by the four groups of the focusing electrodes to form a magnetic mirror field. Through the photon counter, the method can significantly improves the number of photon which finally reaches the anodes so as to improve the photon counting level.

Description

technical field [0001] The invention belongs to the technical field of photon counting and detection, and relates to a photon counter based on a magnetic mirror. The invention also relates to a method for detecting photons by using the photon counter, which significantly improves the photon counting level. Background technique [0002] As a branch of the field of low-light detection—photon counting detection technology has developed rapidly in recent years, and has played a positive role in promoting industry, scientific research and military affairs, especially in astronomy, adaptive optics weak light wavefront sensors, It has important applications in the research of extremely weak light phenomena such as Raman effect, luminescence, and bioluminescence. [0003] In the field of photon counting detection, with the development of technology, several representative devices have appeared successively: the Micro Channel Plate-Photomultiplier developed by Hamamatsu Corporation i...

AI Technical Summary

Problems solved by technology

In this type of device, the photomultiplier tube (Photomultiplier Tube, PMT) has occupied an absolute leading position due to its stable performance and mature technology, while the micro-channel plate photomultiplier tube (MCP-PMT) is based on its opposite The detection ability of extremely weak optical signals has become a high-end product in PMT. The above-mentioned methods to improve the detection level of photon counting are all based on the gain of photoelectron energy and quantity to achieve the enhancement of weak optical signals, but this enhancement cannot satisfy Higher technical requirements. In recent years, the overall development of the further improvement of the detection capabilities of photonic technology devices has been relatively slow. Therefore, how to break through the shortcomings of photomultiplier tubes has become a technical bottleneck in research in this field.

Images