Since the emergence of the first laser, He-Ne laser was invented in the end of the year, only a few months later than the solid-state laser. Since then, various laser machine, such as laser cutting machine, laser marking machine, with various powers have been developed as mushrooming. It is the formation of a new era of optical.

 

The rapid development of lasers not only promoted the progress of science itself, but also opened a broad area of laser applications.

 

From the technology point of view, laser has its revolutionary significance. Since the laser came out, we recognize that all phenomena appeared in the radio can appear in optics. This theory forms the so-called nonlinear optics.

 

Laser is strong light and a good energy source. One question is how to generate such energy, the other problem is how to make good use of it. This kind of laser cutting-edge technology is now referred to as "strong laser technology." It can be used to radiate atomic nucleus and to release atomic power from nucleus. This technique is called laser fusion.

 

Another trend is the laser pulse can become very narrow. To capture the rapid movement of an object, use high-speed camera. Ordinary high-speed camera to thousandths of a second, and as such the process of nuclear reaction, at least to microseconds (10-6 seconds) or even nanoseconds (10-9 seconds) orders of magnitude. Suppose to study the interaction between light and matter, then, between the atoms and atomic, molecular and rapid reaction between atoms, they have to the picosecond (10-12 second) orders of magnitude. Today is also the pursuit of the pulse becomes shorter, the pursuit of the femtosecond (10-15 second) order of magnitude. This is a human desire to explore, to make a short pulse to the micro-physical movement can be observed in the middle of the process. Therefore, ultrashort pulse laser is also an important direction of development. From here we can see the laser advance understanding of the role of the world.

 

In medicine, such as the treatment of retinal detachment, the past is very troublesome thing, laser welding is very convenient. Using different wavelengths of laser and material interaction selectivity, can also play a therapeutic role. Laser surgery is promising.

 

Holography gives us a great inspiration. Ordinary photographic uses only the intensity of light, could see the outline of the image and strength difference.. This together with many new industrial technologies, particularly combined with the development of photovoltaic technology, in optics the formation of a new discipline of optical information processing. Today, there are actually many problems of information processing by optical principle.

 

Today, our country greatly promotes science and education development and sustainable development strategies. Modern technology such as lasers will play an extremely important role. The last ten years, China has included high-tech laser program in the future this work will not only be included in the 863 plans, 973 plans are also included. Laser gives us the prospect of preparing a good, gives us the opportunity to engage in innovation. Especially the younger generation, to see the prospects in this area, to innovation, will have bright prospects.