Optics & Laser Technology ( IF 5 ) Pub Date : 2020-07-01 , DOI: 10.1016/j.optlastec.2020.106449 M.D. Zidan , M.M. Al-Ktaifani , M.S. EL-Daher , A. Allahham , A. Ghanem
The nonlinear optical properties of the Tris(2,2′-bipyridyl)iron(II) tetrafluoroborate in aqueous solution was investigated by the spatial self-phase modulation (SSPM) technique using CW laser at λ = 532 nm. The experimental results show large nonlinear refractive index (n2) and the thermo-optic coefficient (dn/dT) equal to −3.17 × 10−6 cm2/W and the 3.17 × 10−3 k−1, respectively. The effect of input power of excitation laser and the temporal evolution on the shape of the diffraction patterns were studied. Consequently, the collapse effect of the diffraction ring patterns was explained.
中文翻译:
四氟硼酸三(2',2-联吡啶基)铁(II)的衍射环图和非线性测量
通过空间自相位调制(SSPM)技术,使用CW激光器在λ= 532 nm处研究了四氟硼酸三(2,2'-联吡啶基)铁(II)水溶液的非线性光学性质。实验结果表明,大的非线性折射率(n 2)和热光系数(dn / dT)分别等于-3.17×10 -6 cm 2 / W和3.17×10 -3 k -1。研究了激发激光的输入功率和时间演化对衍射图样形状的影响。因此,解释了衍射环图案的塌陷效应。