Since the laser was invented, it has been widely used in different fields such as processing, manufacturing, testing, and medical treatment with its advantages of monochromaticity, good directionality, and energy concentration. In recent years, scientists have discovered a more peculiar laser-femtosecond laser. It is reported that the femtosecond laser is the shortest pulse technology that humans can currently obtain under laboratory conditions. Femtosecond lasers emit more power in an instant than the total power of electricity generation in the world. Scientists predict that femtosecond lasers will play an important role in the field of new energy in the next century.
Ultra-fast ultra-strong laser mainly uses femtosecond laser as the core of research and application. As a unique scientific research tool , the application of femtosecond laser can be roughly summarized into three main aspects, ultrafast application, application in the super-strong field and application in ultra-fine precision machining.
(1) Ultrafast phenomenon refers to a physical, chemical or biological process that changes rapidly in the microscopic system of matter. Femtosecond lasers play a role in rapid process diagnosis in the field of ultrafast phenomena research. Femtosecond laser is like a very fine clock and a super-high-speed "camera", which can analyze and record some rapid processes in nature, especially at the atomic and molecular level. In this field, the femtosecond laser has opened a new door for us, allowing us to see a more subtle natural world.
(2) The application of femtosecond lasers in the super-strong field (also known as strong field physics) is due to the fact that the peak power and light intensity of femtosecond pulses with certain energy can be very high. The energy density corresponding to the femtosecond laser can only exist in a nuclear explosion. Femtosecond intense light can be used to generate coherent X-rays and other extremely short-wavelength light, which can be used for controlled nuclear fusion research.
(3) With the increasing scale of integrated circuits, electronic components are becoming smaller and smaller in size. This demand provides room for ultra-fine processing technology.