Angularly resolved energy band reconstruction method and system based on event-type delay line detector output

By implementing the data processing flow of an event-type delay line detector, including detection area identification, correction, and coordinate mapping, the problem of reconstructing discrete optoelectronic event data output by the event-type detector is solved, and accurate bandgap reconstruction is achieved.

CN122306859APending Publication Date: 2026-06-30SOUTHERN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTHERN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Filing Date
2026-06-03
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing technologies struggle to accurately and reliably reconstruct the angle-resolved band structure of discrete optoelectronic event data output from event-type delay line detectors, especially when multiple detector regions are present, as geometric distortion and sensitivity differences affect the accuracy of the reconstruction results.

Method used

Through event data acquisition, detection area identification, area correction, coordinate mapping, and band structure reconstruction steps, including geometric correction, response correction, and dispersion relation calibration, an accurate mapping from discrete events to energy-momentum coordinates is established.

Benefits of technology

It achieves accurate and reliable angle-resolved bandgap reconstruction of the output of the event-type detector, eliminates errors caused by the multi-region structure of the detector, and ensures the consistency and accuracy of the bandgap reconstruction.

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Abstract

This invention discloses an angle-resolved bandgap reconstruction method and system based on the output of an event-type delay line detector, relating to the field of angle-resolved photoelectron spectroscopy data processing technology. The method includes: an event data acquisition step, acquiring discrete photoelectron events containing spatial coordinate information and event identifier information through an event-type delay line detector; a detection region identification step, assigning events to corresponding detection regions or channels based on the event identifier information or the spatial coordinate information; a region correction step, performing geometric correction and response correction on events in different regions or channels respectively to eliminate systematic differences between regions; a coordinate mapping step, mapping the corrected event coordinates to energy-momentum coordinate space based on a preset dispersion relation of the angle-resolved energy analyzer; and a bandgap reconstruction step, statistically accumulating the mapped events to reconstruct an angle-resolved bandgap distribution map.
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