A device and method for recording dynamic changes of pulsed laser ablation

Abstract

The invention provides a device for recording pulse laser ablation dynamic changes. The device comprises a photoelectric detector, a beam splitter, a high-speed camera and a pulse delay control generator. The beam splitter is arranged on a laser transmitting path of a pulsed laser device, part of pulse laser transmitted by the pulsed laser device is transmitted through the beam splitter and acts on a target to be ablated and the other part of the pulse laser is reflected by the beam splitter to the photoelectric detector. The photoelectric detector is connected with the pulse delay control generator which is connected with the high-speed camera. The high-speed camera is located on one side of the target to be ablated and the lens of the camera aligns with the target to be ablated. The invention further provides a method for recording pulse laser ablation dynamic changes. According to the technical scheme, the defects in the background technology are overcome, and the method is simple, easy to operate, high in recording precision, and capable of being widely applied to the field that the laser and the matter act on each other in the air or under the liquid environment condition.

Description

technical field [0001] The invention relates to a device for recording the dynamic changes of the ablation target during the process of using laser to ablate the ablation target. The invention also provides a corresponding method for recording the dynamic changes of pulsed laser ablation, which belongs to laser application field. Background technique [0002] In the field of laser medicine and laser industry, the optical shadow method is usually used to record the complete dynamic change process of the interaction between the laser and the material. This method requires multiple interactions between the laser and the material and the delay time of each interaction between the laser and the material is different. , the images of each interaction are reintegrated as a complete sequence diagram of a single laser-matter interaction. However, in practice, due to the long response time of the laser (microsecond or even millisecond level) and the response time is not constant, the...

AI Technical Summary

Problems solved by technology

However, in practical applications, due to the long response time of the laser (microsecond or even millisecond level) and the response time is not constant, the recorded dynamic process time will be inaccurate or even wrong.

In addition, if the pulse delay control generator is used to control the laser and the high-speed camera synchronously, although the complete dynamic change process can be recorded, the initial laser action time cannot be accurately determined due to the variability of the laser response time, resulting in the recording of the dynamic change process. precise

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