光的偏振使人们对光的传播规律有了新的认识。在现代通信技术、光电子技术、晶体性质研究、实验应力分析等技术部门有着广泛的应用。光有五种偏振态,即线偏振光、圆偏振光、椭圆偏振光、自然光和部分偏振光。线偏振光和圆偏振光可看作椭圆偏振光的特例。光的干涉和衍射现象证明 The polarization of light makes people have a new understanding of the law of light propagation. In the modern communication technology, optoelectronics, crystal properties research, experimental stress analysis and other technical departments have a wide range of applications. There are five polarization states of light, namely, linearly polarized light, circularly polarized light, elliptically polarized light, natural light, and partially polarized light. Linearly polarized light and circularly polarized light can be considered as special cases of elliptically polarized light. Interference and diffraction phenomena of light