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Nanolazer saves memory

The use of nanoparticles has created laser, promising an increase in density optical disk dozens of times. Cyffroi plazmons in gold "nanobutterflys" conventional laser physics have been able to make the Korean device to generate light with a wavelength of 47 nanometers, which corresponds to 17 - and harmonic original signal. The acuteness of the problem of creating ultraviolet lasers is far from obvious to everyone science, not to mention the general public. Nevertheless, today the situation is that without developing a method of generating short light pulses humanity will be difficult to achieve further progress in many areas of science, and technology. Short-laser with a wavelength of 5-50 nanometers can find its use in new types of optical microscopy and high-resolution lithography, necessary for the creation of micro-and nanoelectronics new generation. Furthermore, the range of ultraviolet light is very promising in the spectroscopic analysis methods substances. But for the mass consumer reduction wavelength laser always associated with an increase in capacity optical storage devices - CD-ROM, DVD and so on. For example, the essence of technology is widely Blue Ray, has doubled storage capacity DVD-drives, in fact, is to replace short-long laser - red on blue. Of course, to those changes added lot of other technical improvements, but the foundation is in almost double reducing the wavelength of the beam reader. Wavelength US radiation in the tens and hundreds of times smaller than that used in the Blue Ray, and it allows to hope for tens and hundreds of movies in high-definition format, fits on one disc. Ultraviolet lasers, working on such technology, is currently very expensive and cumbersome because of the need to strengthen the creation of a separate unit of light pulses. For the purposes of science and technology, micro-and nanoelectronics such lasers must pay reasonable money and placed on the desktop. Until recently, few people believed that this is possible, but the team of Korean scientists presented the world hope. To generate intense ultraviolet radiation nanoantenn array of gold placed in the flow of inert gas - argon and everything happens more similar to modern facilities for obtaining laser radiation. Gas going into gaps between acute conical nanoantenn, instituted and ionizing, followed by what is happening fast recombination with intense emission of electromagnetic radiation spectrum which contains many harmonics, up to 17 - and harmonics with a wavelength of 47 nanometers. A new method of obtaining such radiation significantly cheaper and easier design ultraviolet lasers, making them less energy intensive and more compact. The use of such technology in industrial processes of microelectronics is within reach, and in the future enhancements equip scientists not only new methods of optical microscopy and spectroscopy, but also may help create new methods based on X-rays. Perhaps, once the technology will be able to taste and simple death, as well as the use of lasers certainly would create high-density optical media. click here
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