Laser short-pulse heating of silicon film with the presence of metallic substrate

Measurement of electron number density and temperature of laser-induced Silver plasma

“…The Pulsed laser-induced plasmas (LIPs) has a intensive application in material processing, thin film deposition, environmental monitoring, biomedical studies, military safety usage, art restoration/conservation and metal analysis, which is being produced after laser irradiance on the surface of metals and is of a great interest since last few decades [1][2][3][4][5][6][7][8][9][10][11]. In LIPS method, a micro-plasma is produced in nanosecond when highly intense laser pulse interacts with a target material; resultantly vaporization take place and thus plasma produced expand along the path of distribution in the form of vapor plume.…”

The measurement and analysis of the nonequilibrium heat transport time of the electrons in the Co, Cr and Ag three kinds of metal films based on the transient reflection

“…As the reasons of both the burnout of the devices and the increase of the cost in laser processing are that the lattice temperature is too high, so the phenomenon of the electron nonequilibrium heat transport is very useful for the femtosecond laser heating the films. Recently, because of both the theoretical models and the experimental methods of the microheat transfer mechanism inside the materials have not been established perfectly, the development of the femtosecond laser in engineering applications is restricted, therefore, the study of the micro, ultrafast heat transport processes in the thin films is very important [6][7][8][9][10]. In this paper, we will use the femtosecond transient thermoreflectance (FTTR) technology, build a femtosecond laser pump probe experiment system, research on the nonequilibrium heat transport problems of the electrons in the Co, Cr and Ag three kinds of metal films, and compare with the electron nonequilibrium heat transport time in these metal films by the changes of the transient reflectivity.…”

Measurement of Electron Density and Temperature of Laser-Induced Copper Plasma

“…Due to several key applications in material processing, thin film deposition, environmental monitoring, biomedical studies, military safety usage, art restoration/conservation and metal analysis, the pulsed laser-induced plasmas (LIPs) generated as a result of laser irradiance is of a great interest [1][2][3][4][5] . In this method a highly intense laser pulse interacts with a target material leading to the formation of a micro-plasma in nanosecond due to high intensity plume propagate.…”