Time average scanning digital holography

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F18%3A00006186" target="_blank" >RIV/46747885:24220/18:00006186 - isvavai.cz</a>

Result on the web

<a href="https://www.researchgate.net/publication/326019327_Time_average_scanning_digital_holography" target="_blank" >https://www.researchgate.net/publication/326019327_Time_average_scanning_digital_holography</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.15240/tul/004/2018-1-004" target="_blank" >10.15240/tul/004/2018-1-004</a>

Result language

angličtina

Original language name

Time average scanning digital holography

Original language description

This paper presents a novel method for amplitude distribution measurement of harmonically oscillating objects called time average scanning digital holography (TASDH). Reconstructed intensity image from time averaged digital hologram has the form of a set of fringes that follow a zero-order Bessel function of the first kind. When the phase of light beam in the interferometer is modulated, the bright zero-order fringe shifts with respect to the modulation depth. The method is based on continuous shift of the zero-order fringe over the object surface and the value of vibration amplitude is evaluated independently in every single pixel. An advantageous feature of the proposed technique with respect to other digital holographic vibrometry methods is the ability to measure amplitudes of vibration without the risk of interference fringe order, or 2π, errors. On that account, the method allows to measure high slopes amplitudes distribution or discontinuous/partially shaded objects. The correctness of the method was experimentally verified by measuring the bending piezo actuator.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

20201 - Electrical and electronic engineering

Project

<a href="/en/project/GA16-11965S" target="_blank" >GA16-11965S: Adaptive acoustic metasurfaces for the active sound field control</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

ACC Journal

ISSN

1803-9782

e-ISSN

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Volume of the periodical

24

Issue of the periodical within the volume

1

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

10

Pages from-to

33-42

UT code for WoS article

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EID of the result in the Scopus database

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