TiO纳米材料非线性实现频率加倍。

Frequency doubling by nonlinearity of TiO nanomaterial.

作者信息

Nafil Rabea Q, Majeed Munaf S

机构信息

Applied Physics Branch, Applied Sciences Department, University of Technology, Iraq.

AL-Nahrain Nanorenewable Energy Research Center, AL-Nahrain University, Baghdad, Iraq.

出版信息

Heliyon. 2020 Mar 24;6(3):e03649. doi: 10.1016/j.heliyon.2020.e03649. eCollection 2020 Mar.

DOI:10.1016/j.heliyon.2020.e03649

PMID:32258490

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7109461/

Abstract

We reported titanium dioxide nanoparticles solution (TiO NPS) preparation by the sol-gel method. The produced NPS was employed as a liquid crystal to generate the second harmonic (SH) of one part of the pumping Nd: YAG laser at different pumping intensities. The remaining part of the pumping laser was focused on a stander nonlinear material (NPP63) to produce another SH pulse (to be used as a reference). Then the two SH pulses (one from TiO and one from NPP63) were used to calculate the nonlinear coefficient (β) of the synthesized TiO Nano solution. The suggested method represents a simple and inexpensive setup for calculation β by excluding the very expensive femtosecond laser used in previous studies. The results reveal that β for the prepared TiO nanoparticles is very large (5.3×10 esu).

摘要

我们报道了通过溶胶 - 凝胶法制备二氧化钛纳米颗粒溶液（TiO NPS）。所制备的纳米颗粒用作液晶，在不同泵浦强度下产生泵浦Nd:YAG激光一部分的二次谐波（SH）。泵浦激光的其余部分聚焦在标准非线性材料（NPP63）上以产生另一个SH脉冲（用作参考）。然后使用这两个SH脉冲（一个来自TiO，一个来自NPP63）来计算合成的TiO纳米溶液的非线性系数（β）。所提出的方法通过排除先前研究中使用的非常昂贵的飞秒激光，代表了一种用于计算β的简单且廉价的装置。结果表明，所制备的TiO纳米颗粒的β非常大（5.3×10 esu）。