Applied Physics B

, Volume 69, Issue 5, pp 435–443

Optical measurements with phase-conjugate mirrors

  • R. Kowarschik
  • L. Wenke
  • T. Baade
  • M. Esselbach
  • A. Kiessling
  • G. Notni
  • K. Uhlendorf
Regular paper

DOI: 10.1007/s003400050832

Cite this article as:
Kowarschik, R., Wenke, L., Baade, T. et al. Appl Phys B (1999) 69: 435. doi:10.1007/s003400050832

Abstract.

Phase-conjugate mirrors on the basis of photorefractive crystals offer interesting possibilities of application for optical measurement systems. In this paper we report on the application of phase-conjugate mirrors (PCMs) for optical measurement techniques. We show different schemes for realizing PCMs and discuss characteristics such as reflectivity, fidelity, and time behavior.

We demonstrate that two-beam interferometers with PCMs and with a suitable phase-shifting unit in the reference arm have general advantages compared with conventional systems. It is shown that self-pumped PCMs (SPPCMs) could also be successfully used for novelty filtering systems comparing a present state of a signal phase with a reference phase. It is found that SPPCMs can improve both the axial and the lateral resolution of a confocal microscope. A 30% better resolution of the PCM system is established.

PACS: 07.60.Ly; 42.30.Yc; 42.65.Hw

Copyright information

© Springer-Verlag 1999

Authors and Affiliations

  • R. Kowarschik
    • 1
  • L. Wenke
    • 1
  • T. Baade
    • 1
  • M. Esselbach
    • 1
  • A. Kiessling
    • 1
  • G. Notni
    • 2
  • K. Uhlendorf
    • 2
  1. 1.Friedrich-Schiller-University Jena, Institute for Applied Optics, Fröbelstieg 1, 07743 Jena, Germany (Fax: +49-3641/947652; E-mail: kowar@pinet.uni-jena.de)DE
  2. 2.Fraunhofer-Institute for Applied Optics and Precision Engineering, Schillerstrasse 1, 07745 Jena, GermanyDE