Calculation of refractive index changes from thermal lens fringes using continuous wavelet algorithm

Sarac Z., Dursun A., Yerdelen S., Ecevit F. N.

OPTICS AND LASER TECHNOLOGY, vol.39, no.4, pp.769-773, 2007 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 39 Issue: 4
  • Publication Date: 2007
  • Doi Number: 10.1016/j.optlastec.2006.03.001
  • Journal Name: OPTICS AND LASER TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.769-773

Abstract

Thermal lens fringes are obtained on the nile-blue/ethanol solution by illuminating it with a He-Ne laser in a Mach-Zehnder interferometer. The refractive index change distribution of these fringes is calculated by using two different continuous wavelet transform (CWT) algorithms. It is concluded that the CWT-phase method works better than the CWT-gradient algorithm for the analysis of thermal lens fringes according to theoretical results. (c) 2006 Elsevier Ltd. All rights reserved.