多循环太赫兹源的平均功率可扩展性,基于定期聚焦的酸堆
Optics letters
|December 24, 2025
概括
高功率的太赫兹 (THz) 源是使用周期极化酸 (PPLN) 晶圆堆开发的. 研究人员实现了26.4mW的THz平均功率,确定了透镜效应作为一个关键限制.
科学领域:
- 光学和光子学 在光学和光子学.
- 材料科学 材料科学 材料科学
- 量子电子学 量子电子学
背景情况:
- 太赫兹 (THz) 发电对于各种科学和技术应用至关重要.
- 周期极化酸 (PPLN) 是非线性光学过程的一个有前途的材料.
- 需要的是高功率,窄带多周期太赫兹 (MC-THz) 源.
研究的目的:
- 为了证明由高重复率驱动的MC-THz源,高能子皮秒 ytterbium-doped激光器.
- 调查用于MC-THz生成的PPLN晶片堆的性能.
- 确定局限性并提出缓解策略,以扩大THz功率.
主要方法:
- 使用 PPLN 晶片堆作为非线性介质.
- 采用高重复率 (10 kHz),高能子皮秒 ytterbium-doped 激光器作为源.
- 在10个晶圆堆上运行高达104W的功率.
主要成果:
- 从窄带MC-THz源获得了26.4mW的THz平均功率.
- 在47个晶圆堆中确定和量化了强烈的透镜效应.
- 作为主要限制,证明了显著的光束聚焦.
结论:
- 由 ytterbium 激光驱动的 PPLN 晶片堆对于产生窄带 MC-THz 辐射是有效的.
- 多晶圆堆中的透镜效应限制了当前的THz输出功率.
- 缓解策略对于未来高功率THz源开发的进展至关重要.
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