In order to obtain the external cavity lasered with debugging-free and highly stable light energy output in a non-laboratory environment, the corner cube is employed as the optical resonator of the solid laser to build a V-type external cavity solid-state laser. The output characteristics of this type of laser are studied through theoretical analysis and experimental measurement. The results show that, under the given conditions of pump light, the laser oscillation was successfully achieved through the obtained solid-state laser, regardless of changing the lateral position of the corner cube or the angle between the corner cube and the incident light, while the output power and spot position has changed. This type of the obtained solid-state laser has great reference values for the application of external cavity laser in an environment where vibration causes changes in cavity length.

The impulses of vaporized target material with solid target are measured by using the intense pulse of Q-Nd:YAG laser irradiating the solid target in quasi-vacuum. Analyzing the interaction mechanism of laser with target and vaporized target material, numerical calculation of impulse acting on the target with different laser intensity is performed with fluid dynamics theory and three-dimensional difference scheme. The comparison and analysis are performed between numerical and experimental results. The experimental results are given a reasonable explanation further. It is shown from the consistency between numerical results and experimental results that the numerical calculation model used in this paper can represent the mechanical response of the target to the laser.

The relation between composition in laser absorption region and ambient pressure * Yang Bo( ) b) , Zhu Jin-Rong( ) a)b) , Yang Yan-Nan( ) b)c) , Shen Zhong-Hua( ) b) , Lu Jian( ) b) , and Ni Xiao-Wu( ) b) †

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