[Research on several times of abruptly changes in the ultrafast transient reflectivity in Co films].

In the present paper, cobalt films, chromium and cobalt double layer films, and silver and cobalt double layer films were deposited by magnetron sputtering technique. The transient reflectivity response in cobalt thin films and their double layer films was studied by using femtosecond laser pump-probe transient reflection experimental technology. The result shows that, under the condition of the cobalt films of the same thickness, when the pump power increases, the heating time of the electrons in cobalt thin films is independent of the pump power, and is 0.

[Application of laser induced breakdown spectroscopy (LIBS) to microdetection of Au film machining].

Film micro-machining is a core in micro- and nano- technology, micro-electro-mechanical systems and photoelectron field. However, it is difficult to control the quality of machining in processing film. In the present paper the authors propose a method to solve this problem by using laser induced breakdown spectroscopy (LIBS).

[The theory and the influential factors of laser induced breakdown spectroscopy].

The laser-induced breakdown spectroscopy (LIBS) technique, due to its lack of pretreatment of the material and the speed of analysis, has shown a great potential for a wide range of industrial applications. The current situation of application and study of LIBS are reviewed. Meanwhile, the laser used to explode the Cr and Co film had a pulse duration of 10 ns, the highest single pulse energy was 50 mJ at a repetition rate of 20 Hz, and a wavelength of 1064 nm.