氧化物在其近零区域的显著光学非线性
M Zahirul Alam1, Israel De Leon2, Robert W Boyd3
1Department of Physics and Max Planck Centre for Extreme and Quantum Photonics, University of Ottawa, 25 Templeton Street, Ottawa, ON, K1N 6N5, Canada.
Science (New York, N.Y.)
|April 30, 2016
概括
氧化物具有很大的强度依赖的折射率,对于先进的光学应用至关重要. 这种可逆的非线性光学效应为纳米光子材料设计开辟了新的途径.
科学领域:
- 光学和光学
- 材料科学
背景情况:
- 不线性光学现象对于显微镜和量子信息等先进技术至关重要.
- 材料通常显示弱光学非线性,限制了设备的性能.
研究的目的:
- 研究氧化物 (ITO) 的非线性光学特性.
- 探索 ITO 的超高速全光数据处理和纳米光子技术的潜力.
主要方法:
- 在光谱区域内研究了ITO,其允许性的实际部分消失了.
- 测量了依赖强度的折射率变化及其恢复时间.
主要成果:
- 在真实部分的折射率 (0.72 ± 0.025,线性指数的170%) 观察到显著的变化.
- 证明了超快的反应,可逆恢复时间约为360 femtosecond.
结论:
- 氧化物具有非常大的超快速非线性光学特性.
- ITO的独特特性使其能够设计用于光学应用的新型纳米光子设备.
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