A team of international scientists has designed a new powerful laser system consisting of an array of thousands of fiber lasers that can be used for basic research and a wider range of applications in the laboratory, such as proton therapy and nuclear transmutation. .
The laser can provide very short measurement methods, accurate to femtoseconds (10^-15), and the instantaneous release power can be as high as 10^15 watts, which is thousands of times the global power generation. However, there are two aspects that hinder the wide application of high-intensity lasers. One is that high-intensity lasers usually emit only one pulse per second, while in practical applications, it is required to provide tens of thousands of pulses. Second, high-intensity laser energy utilization is very high. Low, the output laser energy is only a small part of the input electrical energy, most of which is distributed in the form of thermal energy. It is very uneconomical to maintain a stable high power output in practical applications.
The newly developed "fiber laser" array not only provides stable light pulses, but also greatly increases energy efficiency. Scientists can use it to develop a compact accelerator that boosts the energy of particles to a high level at distances of a few centimeters, compared to several kilometers for conventional particle accelerators. When today's accelerators are getting bigger and more expensive, this laser-driven accelerator will become more and more popular, perhaps a new generation of LHC will use this approach.
Compact accelerators also have strong application requirements in the medical field and can be used for proton therapy in cancer patients. In the industrial field, it can be used to treat nuclear waste generated by nuclear reactors, shortening the half-life of radioisotopes, reducing from hundreds of thousands of years to decades or even shorter, greatly reducing the harm to the environment.
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