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Comparative study of various endoscopes for pulsed digital holographic interferometry
Luleå tekniska universitet.
2001 (English)In: Applied Optics, ISSN 1559-128X, E-ISSN 2155-3165, Vol. 40, no 16, p. 2692-2697Article in journal (Refereed) Published
Abstract [en]

A comparison of several endoscopes as object image carriers in pulsed digital holography is presented. Three multicore flexible fiber endoscopes of different spatial resolution and one rigid endoscope are investigated. The four endoscopes are integrated in a setup for the recording of digital holograms on a CCD camera. A double-pulsed ruby laser is used as the light source. A spatial carrier is introduced by an off-axis reference beam, which permits quantitative evaluation of the phase difference between two holograms recorded with a short time separation (5 -600 s). From reported studies it may be inferred that the quality of the phase maps so derived from digital holographic interferometry has a strong correlation to the spatial resolution of the multicore fiber used in these endoscopes. With the endoscopic technique combined with pulsed digital holography a number of useful applications (in areas such as medical endoscopy, micromechanics, and microelectronics) are envisaged for which access to the objects of interest is otherwise difficult.

Place, publisher, year, edition, pages
2001. Vol. 40, no 16, p. 2692-2697
National Category
Applied Mechanics
Research subject
Experimental Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-3457DOI: 10.1364/AO.40.002692Local ID: 1487e3c0-02ad-11dc-ad0a-000ea68e967bOAI: oai:DiVA.org:ltu-3457DiVA, id: diva2:976315
Note
Validerad; 2001; 20070515 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-21Bibliographically approved

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