Evaluation of surface acoustic waves on the human skin using quasi-time-averaged digital Fresnel holograms

• DOI: 10.1364/ao.52.00a136
• Publication Date: 2012-11-13T09:08:13Z
• Authors: Mathieu Leclercq; Mayssa Karray; Vincent Isnard; François Gautier; Pascal Picart
• Keywords: Digital holography; Fresnel equations; Fresnel number; Digital Holographic Microscopy

This paper proposes a first attempt to visualize and analyze the vibrations induced by bone-conduction device propagating at surface of skin human face. The method is based on new approach in so-called quasi-time-averaging regime, resulting retrieval vibration amplitude phase from sequence digital Fresnel holograms recorded with high image rate. design algorithm depends ratio between exposure time period. results show propagation surface, quantitative analysis achieved proposed approach.