In the process of interaction between ultra-fast ultra-strong laser and matter, as the laser intensity continues to increase, various nonlinear effects continue to increase, and phenomena such as high-order harmonics, above-threshold ionization, tunneling ionization, etc. appear, and the cycle magnitude The ultra-short laser pulse loses the periodic characteristics of the wave phenomenon, leading to a series of brand-new physical phenomena and laws. It provides a new experimental tool applied to the fields of coherent control, nonlinear optics, and the newly emerging sub-periodic electronic wave packet control, and provides a new time measurement scale-attosecond, which will be useful for many disciplines The field has an important impact.
In terms of material processing, since the emergence of ultra-fast green laser pointer, due to its ultra-fast time and ultra-high peak characteristics, it can quickly and accurately concentrate energy on the active area, and achieve non-hot-melt cold processing of almost all materials. Obtain the advantages of high precision and low damage that traditional lasers can’t match. These unique advantages of microsecond lasers are widely used in the micro-processing of materials, nano-structure manufacturing, photonic devices, high-density storage, medical bioengineering, etc.
Super-strong and ultra-fast laser science is a very young new discipline, and it is on the eve of major breakthroughs. In recent years, with the breakthrough and commercialization of high-power picosecond, femtosecond laser and fiber ultrafast laser technology, ultrafast laser has moved from the laboratory to the actual industrial production application, becoming a popular direction in academia and laser application industry.
Ultrafast lasers can solve many processing problems such as high, precise, sharp, hard, and difficult that are difficult to achieve by conventional methods, and achieve amazing processing capabilities, processing quality and processing efficiency, and produce significant economic and social benefits. Following the start and development of German “Industry 4.0” and “Made in China 2025”, the demand for high-end manufacturing, intelligent manufacturing, and high-precision manufacturing will increase significantly in the future. Ultrafast laser pointer and advanced micro-nano laser pointer processing technology will usher in new rapid Development Opportunities. The total ultrafast laser market is expected to exceed 1.5 billion US dollars by 2020.