Since its invention, laser has been widely used in manufacturing, testing, medical treatment and other fields by virtue of many advantages such as monochrome, good direction and concentrated energy. In recent years, scientists have discovered a more exotic laser, the femtosecond laser. Femtosecond lasers are the shortest pulses available in the laboratory. Femtosecond lasers can generate more power in a flash than all the world’s electricity, and scientists predict they will play an important role in new energy sources in the next century.
Super super fast mainly by femtosecond lasaer pointer, which is the core of the research and application, as a unique scientific research tool and means, the application of femtosecond laser can be roughly divided into three main aspects, namely the femtosecond laser in super fast in the field of application, the application in the field of super and its application in ultra micro precision machining.
(1) ultra-fast phenomenon refers to the physical, chemical or biological processes that take place in the microscopic system of matter and change rapidly. Femtosecond laser (femtosecond laser) is a kind of rapid process diagnosis in the field of ultra-fast phenomena. Femtosecond lasers, like extremely sophisticated clocks and ultra-fast “cameras”, can analyze and record some rapid processes in nature, especially at the atomic and molecular levels. In this area, femtosecond lasers have opened a new door to a more nuanced view of the natural world.
(2) the application of femtosecond lasers in super fields (also known as strong field physics) is attributed to the peak power and light intensity of femtosecond pulses with a certain energy which can be very high. The electromagnetic field associated with such light would be much larger than the coulomb field of the atom, easily stripping out all the electrons. Therefore, femtosecond laser is an important tool to study the high order nonlinear and multiphoton processes of atomic and molecular systems. The energy density corresponding to the femtosecond laser is only possible in a nuclear explosion. Strong femtosecond light can be used to produce coherent x-rays and other very short wavelengths of light that can be used for controlled nuclear fusion.
(3) with the increasing scale of integrated circuits, electronic components become smaller and smaller in size, which provides room for the development of ultra-fine machining technology. Femtosecond laser for ultra-fine machining is an important application field of femtosecond laser technology besides the research of ultra-fast phenomena and ultra-strong phenomena. This application has been developed gradually in response to the market demand in recent years, and has made a lot of important progress.
Different from femtosecond ultrafine and femtosecond ultrafine research, femtosecond laser ultrafine machining is closely related to advanced manufacturing technology and can play a more direct role in promoting the development of some key industrial production technologies. Femtosecond laser ultrafine machining is an attractive research direction in laser and optoelectronics industry. With the continuous development of femtosecond laser technology and the continuous expansion of application fields, femtosecond laser will definitely have more applications.