The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We experimentally demonstrate the efficient channeling of fluorescence photons from single q-dots into single-mode optical fiber, by measuring the photon-count rates through the guided and radiation modes simultaneously for various diameters of nanofiber.
This paper proposes a novel scheme suitable for mm-wave automotive radars to estimate the direction-of-arrivals (DOAs) of coherent waves with only three receiving antennas. Reflected waves completely correlated from two targets can be resolved with calibrated 3-channel array antenna by using only one snapshot data. The resolution capability can be further improved with the use of multiple snapshot...
We show that fluorescence of a very small number of atoms around a subwavelength-diameter silica-fiber, an optical nanofiber, can be measured efficiently by detecting the photons coupled to the guided mode of the nanofiber. Also such a technique enables us to probe the van der Waals interaction between atoms and surface with high precision.
A 24 GHz intruder detection radar with three vertically-switched-beam antennas has been developed to cover a fan-shaped ground area with 90 degs. in azimuth and 0 to over 14 m in range, when mounted at a height of 5 m. Each switched beam monitors a different range segment with a monopulse scheme employed to achieve the wide azimuth coverage. An experimental radar with a Tx/Rx module fully assembled...
In the present work, the authors proposes a novel method to manipulate atoms and photons using a subwavelength-diameter silica-fiber, an optical nanofiber. We use laser-cooled Cs-atoms as working atom. The paper shows that fluorescence of a very small number of atoms around the optical nanofiber can be measured efficiently by detecting the photons coupled to the guided mode of the nanofiber. Atoms...
We show how an atom can couple light to a nanobody efficiently. We demonstrate that a significant fraction of emission from the atom can be channeled into guided modes of a nanofiber.
We propose and examine a scheme to bind atoms in stable orbits around a very thin optical fiber with a propagating fundamental light mode. Our main conclusion is that the neutral atoms can be trapped in two dimensions around the photon-carrying fiber at a submicron distance from the fiber surface
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.