Comparative Study of Various Endoscopes for Pulsed Digital Holographic Interferometry

Staffan, Schedin and Pedrini, Giancarlo and Tiziani, H.J and Aggarwal, A.K. (2001) Comparative Study of Various Endoscopes for Pulsed Digital Holographic Interferometry. Applied Optics, 40 (16). pp. 2692-2697. ISSN 0003-6935

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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 μs). 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.

Item Type: Article
Uncontrolled Keywords: TV-holography; fiber
Subjects: CSIO > Optics
Depositing User: Ms. Narinder Kaur
Date Deposited: 05 Mar 2012 12:01
Last Modified: 23 Apr 2012 14:37

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