Study on the Free Electron Laser and Condensed Matter Physics based on Computer

With the rapid development of computer technology, laser has been widely used in various fields of scientific research. However, with the development of computer technology, the shortcomings of traditional lasers are more and more obvious. Generally, lasers only work in different wavebands, which can not adjust the laser energy. Therefore, the peak power and average power of the laser are not high. The output power of different wavebands varies greatly, which increases the omplexity of the experiment. Therefore, the low power and non adjustable frequency limit the depth and breadth of application. In the dynamics study of condensed matter physics, the energy of many elementary excitations in condensed matter, such as acoustic phonon, magneton, polaron and so on, is in the far-infrared region. In recent years, a new type of laser source, free electron laser (FEL), with adjustable frequency and high power, has been developed in the world, which opens up a new way for the study of condensed matter physics. Firstly, this paper analyzes the related concepts. Then, the classification of FEL is analyzed. Finally, the application of FEL in condensed matter physics is proposed. (paper)