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Third order nonlinear properties of Rhodamine B Dye doped PVA polymer determined by eclipsing scan technique
Al?Hamdani, Ali H1.
Nonlinear (NL) optical properties were observed in Rhodamine B (RB) dyes doped in poly
(vinyl alcohol) (PVA) polymer films. Eclipsing Z‐scan (EZ‐scan) with a continuous
wavelength of 532 nm was used to investigate the effect of dye concentration on its NL
properties. The open aperture EZ‐scan indicates a reverse saturable absorption behavior
(positive type) of NL absorption (NLA) coefficient (β) in the RB+VA matrix, whereas the
closed aperture EZ‐scan exhibits transition from positive (focusing) to negative (defocusing)
nonlinearity at increasing dye concentration. The NL refractive index ݊2, NLA coefficient ߚ,
third‐order susceptibility ߯3, and second‐order hyperpolarizability ߛ ݄increase with the
increase in dye concentrations. The magnitude of the n2, ߚ߯ ,3, and ߛ ݄were in the order of
10‐12 (ܿ݉2/W), 10‐1 (ܿ݉/W), 10‐8 (esu), and 10‐12 respectively
Affiliation:
- University of Technology Baghdad, Iraq
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Indexation |
Indexed by |
MyJurnal (2021) |
H-Index
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2 |
Immediacy Index
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0.000 |
Rank |
0 |
Indexed by |
Scopus 2020 |
Impact Factor
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CiteScore (1.3) |
Rank |
Q3 (Electrical and Electronic Engineering)) Q4 (Electronic, Optical and Magnetic Materials) |
Additional Information |
SJR (0.298) |
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