Directionality of terahertz radiation emitted from an array of femtosecond filaments in gasesстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 12 января 2015 г.
Аннотация:An array of filaments in air is numerically shown to be an efficient tool to direct the energy
of terahertz (THz) radiation into a narrow and controllable cone. By increasing the number
of filaments in an N × N array, the THz energy growth per unit angle of the cone exceeds the
classical gain in N^2. The backwardly directed radiation from the filament array appears when
the transverse size of the array reaches the filament length. The optimum spacing between
the filaments in the array is the THz wavelength, which ensures constructive interference and
independent development of filaments.