On the Evanescent Waves in Sonic Band-gaps
Journal Title: Analele Universitatii "Eftimie Murgu" Resita. Fascicula de Inginerie - Year 2015, Vol 22, Issue 2
Abstract
The band-gaps or the Bragg reflections occur at different frequencies inverse proportional to the central distance between two scaterers. The evanescent waves may converge or diverge as distance goes to infinity. If the waves converge, they decay exponentially within the band-gaps and sustain an evanescent mode. If the waves diverge, a defect can terminate this exponential growth.
Authors and Affiliations
Ligia Munteanu, Rodica Ioan
Keywords
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