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Nonlinear optical properties and thermal lensing of PVA doped with green synthesized Ag-Cu nanoparticles

JANCY JOHN1, VINOY THOMAS1,* , RAMAKRISHNAN JAYAKRISHNAN2, IBRAHIMKUTTY REJEENA3, SEBASTIAN MATHEW4, ABDULHASSAN MUJEEB4, ROSELEENA THOMAS5

Affiliation

  1. Department of Physics, Christian College Chengannur-689122, Research Centre, University of Kerala, Thiruvananthapuram, Kerala, India
  2. Department of Physics, University of Kerala, Thiruvananthapuram-695581, Kerala, India
  3. Nano Photonics Division, MSM College, Kayamkulam-690502, India
  4. International School of Photonics, Cochin University of Science and Technology, Cochin -22, India
  5. Department of Physics, St. Joseph’s College for Women, Alappuzha-688001, University of Kerala, India

Abstract

Ag-Cu nanoparticles were synthesized by the reduction of Ag and Cu ions in aqueous solution using Mimosa pudica as reducing agent. Nonlinear optical response of the PVA doped with Ag-Cu nanoparticles (Ag-CuNPs@PVA) was studied using open-aperture Z-scan technique. Ag-CuNPs@PVA showed higher nonlinear absorption than that of Ag NPs and Cu NPs alongside a better optical limiting property as revealed in nonlinear transmission studies. Nonlinear studies thus indicate Ag-CuNPs@PVA as an efficient material for photonic applications. Further, investigations on thermal diffusivity of the PVA doped with Ag-Cu nanoparticles using a dual beam mode match experimental set-up have revealed an enhanced thermal diffusivity for the sample..

Keywords

Mimosa pudica, Nonlinear optical properties, Reverse saturable absorption, Optical limiting.

Submitted at: May 11, 2023
Accepted at: Nov. 24, 2023

Citation

JANCY JOHN, VINOY THOMAS, RAMAKRISHNAN JAYAKRISHNAN, IBRAHIMKUTTY REJEENA, SEBASTIAN MATHEW, ABDULHASSAN MUJEEB, ROSELEENA THOMAS, Nonlinear optical properties and thermal lensing of PVA doped with green synthesized Ag-Cu nanoparticles, Journal of Optoelectronics and Advanced Materials Vol. 25, Iss. 11-12, pp. 543-548 (2023)