Manipulation of focal patterns in acoustic Soret type zone plate lens by using reference radius/phase effect; Ultrasonics; Vol. 91

Manipulation of focal patterns in acoustic Soret type zone plate lens by using reference radius/phase effect; Ultrasonics; Vol. 91

Bibliografiske detaljer
Parent link:Ultrasonics
Vol. 91.— 2019.— [P. 237-241]
Institution som forfatter: Национальный исследовательский Томский политехнический университет Инженерная школа неразрушающего контроля и безопасности Отделение электронной инженерии
Andre forfattere: Tarrazo-Serrano D. Daniel, Rubio C. Constanza, Minin O. V. Oleg Vladilenovich, Candelas P/ Pilar, Minin I. V. Igor Vladilenovich
Summary:Title screen
The manipulation of focal patterns of acoustic underwater Soret Zone Plate lens in far fields, such as manipulation (optimization) of Sidelobe Level and the design of long depth of focus by selecting the simple free parameter called reference radius (phase) has been demonstrated.Two effects have been studied by means of numerical simulations. Regarding the first effect, simulations demonstrate diffraction limited focal spot (0.47 wavelength) and 3?dB reduction of the first Side Lobe Level using Soret ZP with an optimal reference radius and without causing neither main lobe broadening or gain reduction. In the second effect, by using numerical simulations an increasing of depth of focus, more than 2 times, in comparison with classical Soret ZP with high numerical aperture (F/D?=?2.5), was observed
Режим доступа: по договору с организацией-держателем ресурса
Sprog:engelsk
Udgivet: 2019
Fag:
электронный ресурс
труды учёных ТПУ
ultrasonic lenses
soret zone plate
side lobel level
reference radius
ультразвуковые линзы
боковые лепестки
уровни
Online adgang:https://doi.org/10.1016/j.ultras.2018.07.022
Format: Electronisk Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=659093

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