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.
Hollow Gaussian beam (HGB) is very useful mathematical model to describe dark hollow beam (DHB). In this article, the focusing properties of cylindrical vector hollow Gaussian beam are investigated theoretically by vector diffraction theory. Simulation results show that the optical intensity in focal region of HGB can be altered considerably by changing the polarization angle and the order of HGB...
Focusing properties of annular cylindrical vector beam induced by tunable mask is numerically investigated in this paper. The tunable mask which may alter the wavefront of incident beam with tunable polarization, phase, and the geometrical parameter radius of the field. Numerical simulations show that the evolution of the focal shape is altered considerable by changing the radius of the tunable annular...
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.