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有效的和可调节的频率转换使用定期聚合的薄膜坦酸纳米波导

Simin Yu¹, Mingyue Qi¹, Huizong Zhu¹

¹State Key Laboratory of Quantum Functional Materials, School of Information Science and Technology, ShanghaiTech University, Shanghai, 201210, China.

Nanophotonics (Berlin, Germany)

|September 19, 2025

概括

研究人员开发了一种新型的薄膜坦酸盐 (TFLT) 第二波发生器. 这种芯片尺寸的设备展示了高效的光转换,为先进的光子应用铺平了道路.

科学领域:

光子学是一个光子学.
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:

薄膜坦酸盐 (TFLT) 为集成光学提供了比薄膜酸更优越的性能.
主要优势包括光折射的减少,更高的光学损伤值,更广泛的透明度和更低的双折射率.
这些特性使得TFLT成为芯片规模非线性光学设备的强有力的候选者.

研究的目的:

使用TFLT演示第一个功能性的第二波发生器 (SHG).
为了利用z切割TFLT波导中的高保真度抛光,实现高效的非线性频率转换.
建立基于TFLT的低损耗集成光子平台.

主要方法:

在一个集成的光子平台上制造z-cut TFLT波导.
对TFLT材料进行高保真抛光,以实现准相匹配.
描述第二波生成效率和温度可调性.

主要成果:

实现了强大的第二波生成,正常化效率为229%/W·cm2).
在700μW的功率下,证明了5.5%的绝对转换效率.
观察到稳定的温度调能力为-0.44 nm/°C,用于精确的频率对齐.

结论:

开发的TFLT SHG是芯片规模非线性光学的一个重大进步.
该设备的高效率和稳定的调制性对于原子钟和量子频率转换等应用至关重要.
TFLT为未来的集成光子设备提供了一个非常有前途的平台.

关键词:

综合光子学综合光子学定期进行抛光.第二个波的第二代波.薄膜坦酸是一种薄膜.

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