在化波导中相匹配的第三和生成
Surendar Vijayakumar1, Kaustubh Vyas2, Daniel H G Espinosa2
1Institute of Optics, University of Rochester, 480 Intercampus Dr, Rochester, NY 14627, USA.
Nanophotonics (Berlin, Germany)
|August 26, 2024
概括
化波导使得高效的第三和生成 (THG) 成为可能,为先进的应用产生可见光. 本研究详细介绍了这些CMOS兼容设备的相位匹配和效率.
科学领域:
- 光子学和波导技术 波导技术
- 非线性光学是非线性光学.
- 材料科学 材料科学 材料科学
背景情况:
- 化 (SiN) 波导为非线性光学过程提供了一个有前途的平台,因为它们具有很大的非线性易感性和CMOS兼容性.
- 第三和生成 (THG) 是一种关键的非线性过程,用于从红外源生成可见光,在光谱学,计量学和光通信中具有应用.
- 在SiN波导中高效的THG对于开发紧且集成的光子设备至关重要.
研究的目的:
- 在化波导中演示和描述第三和的生成.
- 为了实现基本横向模式和更高阶的TM模式之间的相位匹配,以实现高效的频率转换.
- 研究波导体几何学对相匹配波长和转换效率的影响.
主要方法:
- 制造具有控制尺寸的化波导.
- 使用基本波长为1,596 nm的第三波生成的实验设置.
- 用远场成像和光谱分析在532nm处生成的第三波的表征.
- 作为波导宽度函数的相匹配波长的系统测量.
主要成果:
- 在化波导中成功演示了第三和的生成.
- 在532 nm的基本横向模式和TM02模式之间实现了相匹配.
- 实验确定了波导宽度依赖相位匹配的波长.
- 在660μm的相互作用长度上,测量的峰值功率-规范化转换效率为5.78 × 10-7%/W2.
结论:
- 化波导对于高效的第三和生成是有效的,为可见光源提供了可行的通道.
- 证明的相匹配方案和效率突出显示了SiN光子在集成非线性光学应用中的潜力.
- 进一步优化波导设计和制造,可以提高超快脉冲表征,电信监控和子生成的性能.
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