Digital nanosecond imaging architecture and analytical tracking technique of colliding laser-produced plasma

The high-power pulsed laser beams can use for matter ablation which is not only prevalent in science fiction movies but discovered by several technological fields ranging from the manufacturing of micro and nanoscale features to biomedical imaging applications.In the present work, the contemporary technical setup, integrated with the spatially, temporally, and semi-spectrally resolved optical emission imaging of colliding laser-produced plasma has been employed to study plasmas formed by 1064 nm pulsed laser ablation of the Aluminum target in a vacuum. The species emissions from the stagnation layer were mapped as a function of both locations from the surface of the target and time from the laser pulse. The fast-optical imaging technique, based on new digital analysis mechanisms and algorithms, has been utilized as a diagnostic tool to investigate the geometrical characterization and related features of the interaction zone formed by homogenous target material. The study provides a considerable amount of detailed data of the interaction zone which extends the understanding of the behaviour of particular species within colliding laser-produced plasmas. The plasma parameters such as total intensity and area density were measured from the spatiotemporal analysis based on an integrated digital image processing code. The results explain the characterizations of the stagnation layer life cycle and dynamical decay of the species emission and related features. Our experimental investigations show that through appropriate engineering based on the modified observational setup, the properties of the stagnation layer can be controlled with relative ease, making colliding plasma systems a flexible platform for the study of many complex physical systems.