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, cilt.39, ss.769-773, 2007 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 39 Konu: 4
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1016/j.optlastec.2006.03.001
  • Dergi Adı: OPTICS AND LASER TECHNOLOGY
  • Sayfa Sayısı: ss.769-773

Özet

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.