0D 奇拉式混合石化物非线性光学特性
Aman Chaturvedi1, Parikshit Kumar Rajput1, Shabnum Maqbool1
1Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Pune, 411008, India.
Advanced materials (Deerfield Beach, Fla.)
|April 3, 2025
概括
无合金混合金属化物表现出有前途的非线性光学 (NLO) 特性,包括增强的第二波生成 (SHG) 和第三波生成 (THG). 这些材料为先进的NLO应用提供了更安全的替代方案.
科学领域:
- 材料科学 材料科学 材料科学
- 光学是什么?光学是什么?光学是什么?
- 化学 化学 化学
背景情况:
- 化混合金属化物对非线性光学 (NLO) 应用具有前景.
- 基于的化合物得到了广泛的研究,但引起了毒性问题.
- 开发无替代品对于更广泛的采用至关重要.
研究的目的:
- 为了研究无合金混合金属化物的第二级和第三级NLO特性.
- 为了比较奇拉化合物 ((R-/S-MBA) 4Bi2I10) 与它们的阿基拉对应物 ((Rac-MBA) 4Bi2I10) 的NLO性能.
- 评估它们对NLO应用的潜力.
主要方法:
- 合成奇拉性和阿奇拉性OD混合金属化物.
- 在不同的激发波长 (1360-1590 nm) 下测量第二波生成 (SHG) 和第三波生成 (THG).
- 采用800纳米的femtosecond脉冲进行Z-scan测量,以确定非线性吸收系数和折射率.
主要成果:
- 基拉尔 (R-/S-MBA) 4Bi2I10表现出强烈的SHG和THG,对循环极化具有很高的敏感性 (gSHG-CD ≈9%).
- THG反应显示了与刺激吸收相关的共振增强.
- (Rac-MBA) 4Bi2I10显示了最高的THG响应 (χ(3) = 1.05 × 10−18 m2 V−2).
- Z-扫描显示所有样品的高非线性吸收率 (β) 和折射率 (n2),其中阿基拉化合物显示最高值.
结论:
- 无合金混合金属化物具有高效的第二和第三阶非线性.
- 这些材料显示出高光学稳定性和NLO应用的潜力.
- 应用包括基于Kerr的光学切换,循环极化向上转换和光学通信.
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