Researchers from the university of California lwa have nanolasers being developed that are more fuel-efficient than the versions that have so far been made. One of the lasers is only five hundred nanometers large, and would in chips ge lwa integrated.
At the university of California in San Diego were coaxial structures developed for the small lasers to build. The nanolasers consist of a metal rod is surrounded by a ring of metal. In the metaalring are so-called quantum wells, semiconductor devices have been made: the whole serves as an optical cavity to the laser effect. The coaxial lasers thanks to their unique anatomy is much more efficient than other small lasers. The energy which is necessary to coherent light to generate it was now very large in nanolasers.
The now developed variants to work at room temperature and produce a coherent light beam of constant amplitude and frequency. Moreover, the researchers in it, by the shape of the ring and the quantum wells to adjust the threshold at which the lasers and their effect to take away. That results in so-called threshold-less lasers in low-energy all work.
According to the researchers, the nanolasers world’s smallest of their kind. Although optically pumped lasers are often a lot bigger than the produced wavelength coherent light, but lasers in and of itself, can be smaller can be produced, for example, by using plasmonen. Nevertheless, the by the Califorinische researchers produced lasers a lot smaller than other small variants. With a size of about 500nm or half of a micrometer, the smallest size of this type has not yet been achieved: they would furthermore, can be reduced.
The small, fuel-efficient lasers would, thanks to their very small dimensions and the ability at room temperature, chips for optical computers can be used. The wetenschapsteam wants to be first, however, the lasers improve, and versions that electrically instead of optically, with light, pumped can be.