材料科学
飞秒
Z扫描技术
薄膜
兴奋剂
蓝宝石
非线性光学
分析化学(期刊)
激光器
光电子学
光子学
吸收(声学)
光学
纳米技术
有机化学
复合材料
化学
物理
作者
Anusha Ekbote,Shivaraj R. Maidur,Jitendra R. Jahagirdar,P. S. Patil,Venugopal Rao Soma
标识
DOI:10.1016/j.mtcomm.2023.107240
摘要
Herein we present the linear and third-order nonlinear optical properties of two nitro substituted chalcone derivatives [3-(4-fluorophenyl)-1-(3-nitrophenyl) prop-2-en-1-one and (2E,4E)-1-(3-nitrophenyl)-5-phenylpenta-2,4-dien-1-one; abbreviated as F3NC and Ci3NC, respectively] doped PMMA polymer thin films. The chemical spray pyrolysis method was adopted to prepare the films at three different doping concentrations (5 wt%, 10 wt%, 15 wt%). The linear optical studies were performed using UV-Visible-NIR spectra, and surface roughness using AFM technique. Hirshfeld surface analysis was adopted to understand the intermolecular interactions. The third-order nonlinear optical properties were investigated using Z-scan method under Ti:Sapphire femtosecond (fs) laser pulses (~150 fs, 80 MHz, 800 nm). Open aperture and closed aperture Z-scan curves indicated the presence of two-photon assisted reverse saturable absorption and self-defocusing effect, respectively. The calculated nonlinear refraction (n2), nonlinear absorption (β) coefficients and third-order susceptibility [χ(3)] were found to be 10-12 cm2 W-1, 10-8 cm W-1 and 10-11 e.s.u., respectively. We observed increase in nonlinearity of the films with increased chalcone doping concentration. F3NC doped films exhibit a higher nonlinearity than Ci3NC doped films. The observed results reveal that chalcone-doped PMMA thin films are possible materials for optical limiting and photonic applications.
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