Nonlinear Characterization Of Mixture (Rhodamine (3GO And B)) Dyes Doped PMMA For Potential Application In Optical Limiting

Authors

  • Ali H. Al_Hamdani , Mohammed A.R. Hussein , Zaman Hameed Kareem.* , Hussein A.H. Al-Hamdani

Abstract

-In this paper, films of mixture (Rodamine (3GO and B)) at different concentrations into poly
(methyl methacrylate) (PMMA) for the optical limiting applicant were realized and examined. Also, the
samples’ non-linear properties are conducted utilizing CW Nd-YAG laser at 532nm as excitation source, while
the optical response which is related to samples is specified via evaluating the intensity dependent refractive
index n2 of medium with the use of Z-scan method. In addition, the dye showed negative (i.e. de-focusing)
non-linearity as well as non-linear refractive index (NLR) with order 10-10 cm2
/W. There are varying
concentrations of NLR. The dye’s 3rd order non-linearity is dominated via non-linear refraction that results in
strong optical limiting of the laser. Furthermore, the optical limiting characteristics of the dye mixtures at
different concentration values in the matrix films are examined. The results are indicating that the mixture of
(3GO and RB) dyes which are doped in the PMMA were materials of high importance for the optical limiting
applications.

Published

2020-05-30

Issue

Section

Articles