Comparative study of various endoscopes for pulsed digital holographic interferometry

被引：0

作者：

Schedin, Staffan ^{[1
,3
]}

Pedrini, Giancarlo ^{[1
]}

Tiziani, Hans J. ^{[1
]}

Aggarwal, Anil K. ^{[2
]}

机构：

[1] Institut für Technische Optik, Universität Stuttgart, Pfaffenwaldring 9, D-70569 Stuttgart, Germany

[2] Coherent Optics Division, Ctrl. Sci. Instruments Organisation, Sector-30, Chandigarh 160020, India

[3] Department of Experimental Physics, Umeå University, SE-90187 Umeå, Sweden

来源：

Applied Optics | 2001年 / 40卷 / 16期

关键词：

Cameras - Charge coupled devices - Holograms - Holographic interferometry - Image analysis;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

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. © 2001 Optical Society of America.

引用

页码：2692 / 2697