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.
The temperature dependence of the laser threshold in lead salt heterostructures has been calculated for arbitrary degeneracy of equilibrium and non-equilibrium carriers within the active medium. Radiative recombination, Auger recombination and linear recombination are taken into account.
. Matching the impedance of a medium to free space, which is usually not available in natural materials, is an important advance in metamaterials. In this paper, we present a simple mechanism for a perfect impedance-matched left-handed metamaterials, that reveals a nearly zero reflection over operating frequency. This finding is based on the independent manipulation of the electric response without...
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.