Abstract

In the International Thermonuclear Experimental Reactor under construction in southern France, there will be a need for continuous measuring of the erosion at the wall, after the reactor starts operating. A two-wavelength interferometric technique based on digital holography is proposed for the erosion measurement. This technique has the ability to tackle the challenging environmental conditions within the reactor by a long-distance measurement, where a relay optic will be used for imaging the investigated surface on the detector. We will show that the shape measurements of objects located at a distance of more than 20 m from the measuring head can be carried out in a short time (100 μs) by the two-wavelength interferometric technique. A depth accuracy of ±10μm is achieved.

© 2019 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Miniaturized digital holography sensor for distal three-dimensional endoscopy

Ervin Kolenovic, Wolfgang Osten, Reiner Klattenhoff, Songcan Lai, Christoph von Kopylow, and Werner Jüptner
Appl. Opt. 42(25) 5167-5172 (2003)

On the precision of absolute sensitivity calibration and specifics of spectroscopic quantities interpretation in tokamaks

D. I. Naydenkova, V. Weinzettl, J. Stockel, and J. Matějíček
Appl. Opt. 53(34) 8123-8130 (2014)

Comparative study of various endoscopes for pulsed digital holographic interferometry

Staffan Schedin, Giancarlo Pedrini, Hans J. Tiziani, and Anil K. Aggarwal
Appl. Opt. 40(16) 2692-2697 (2001)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (14)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (1)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription