Energy measurement and calibration system for large-scale laser devices

Abstract

The invention relates to an energy measurement and calibration system for large-scale laser devices and belongs to the technical field of laser energy measurement technologies. The system comprises anenergy measurement system, AD conversion modules, group centralized processing modules, an energy electrical calibration assembly, a backbone network and an energy measurement and calibration controlplatform. A data transmission interface of each energy measurement probe is connected with one AD conversion module, one group centralized processing module and the backbone network in sequence, an electrical calibration assembly of the energy measurement probe is connected with the backbone network through the energy electrical calibration assembly, and the energy measurement and calibration control platform is connected with the backbone network. The system can satisfy the distributed measurement, grouped control, data and command centralized control of energy measurement of a large-scale multi-channel laser device, and the calibration process is simple and efficient.

Description

Technical field [0001] The present invention belongs to the technical field of laser energy measurement, and specifically relates to an energy measurement and calibration system for large-scale laser devices. Background technique [0002] High-power solid-state laser devices are required to complete the simultaneous and accurate measurement of laser energy in real time. The measurement feature is that, limited by the optical path structure design, energy measurement probes must be distributed in different spatial positions of the device, that is, distributed measurement; The architecture design of the control system, the multiple beams meeting a certain relationship in space are divided into a group, and unified control is implemented, that is, grouped control; all data and commands are processed by the centralized control system, that is, the centralized control of data and commands. These energy meters must be calibrated regularly. If the optical calibration method is adopted, ...

AI Technical Summary

Problems solved by technology

And these energy meters must also be calibrated regularly. If optical calibration is used, then hundreds of sets of energy meters need to be disassembled regularly, which greatly reduces the operating efficiency of the device. Therefore, it is necessary to find a new laser The calibration method can complete the calibration of the energy meter without removing the energy meter, and the most convenient and fast way is to use electric energy instead of laser energy to heat the probe of the energy meter to complete the calibration of the energy meter

[0003] In the existing electrical calibration methods, one is to use a resistance wire to wind around the energy meter probe. The biggest defect of this method is that a large part of the energy will be dissipated into the air during the calibration process. The linearity of the calibration and the photoelectric equivalence are low; there is another way to use the sintering process to coat the planar resistive film on the thermal uniform body, and this method can achieve better heating uniformity and photoelectric equivalence , but this method requires high technology and high cost, which will greatly increase the cost under the condition of large-scale use

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