Liu Yan, male, from Shaoyang, Hunan Province, is a doctoral student, associate professor and tutor of master students. In 24, he graduated from the Laser Research Institute of Qufu Normal University with a master's degree in optics. In 27, he graduated from Shanghai Institute of Optics and Mechanics, Chinese Academy of Sciences with a doctorate in optical engineering. After graduation, he entered the School of Science of Three Gorges University, and successively undertook the teaching of laser principle and technology, information optics, engineering optics, optoelectronics and other courses. In 212, he visited Nanyang Technological University in Singapore for half a year. At present, he is mainly engaged in research on laser devices and applications, design and measurement of polarizing devices. More than 1 papers were published, 1 were searched by SCI and EI, and 2 patents were granted. He presided over two projects of Hubei Provincial Department of Education and one project of Yichang Science and Technology Bureau, and participated in many national and provincial projects.