| Zugriffsnummer | 12201 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Optical multilayer detection array for fast ultrasonic field mapping |
| Autor(in); Institution |
Wilkens, Volker; 1.43, Ultraschall, PTB-Braunschweig
Koch, Christian; 1.43, Ultraschall, PTB-Braunschweig
|
| Quelle/Jahr | Optics Letters: 24 (1999), 15, 1026 - 1028 |
| ISSN | 0146-9592 |
| Verlag | Washington, DC: OSA |
| Zusammenfassung | An optical multilayer detection array for ultrasonic measurements is presented. The probe comprises a dielectric interference filter structure that is evaporated onto a glass plate. An incident acoustic pressure signal deforms the layer system, and the induced modulation of the optical reflectance is determined by a simple optical detection scheme. The principle of measurement is demonstrated by a line scan through the focus of a broadband transducer and can be applied to the rapid two-dimensional characterization of ultrasonic fields. High temporal and spatial resolution of measurements is combined with high sensitivity and durability of the probe, and, in contrast to fiber tip multilayer hydrophones, the multilayer detection array provides signals which are not influenced by acoustic resonances and diffraction phenomena. |
| Rechteinformation | 1999, Optical Society America |