发表机构
State Key Laboratory of Ultraintense Laser Science and Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences; ShanghaiTech University; Shanghai Normal University（中国科学院上海光学精密机械研究所强激光技术重点实验室; 上海科技大学; 上海师范大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究提出一种通过反向参量荧光产生宏观相干类轴子粒子的方法，利用轴子-电子耦合实现，可连续调谐，一年运行能将低质量类轴子粒子搜索灵敏度提升至g_{ae}≃2.8×10^{-11}。
AI 中文摘要
我们提出一种通过轴子-电子耦合\ng_{ae}实现的实验室宏观相干类轴子粒子（ALPs）源。两束反向传播的光学模式驱动晶体中的反向参量荧光，在该过程中两个泵浦光子通过虚离子跃迁转化为相对论性类轴子粒子，同时介质恢复初始状态。相位匹配使众多离子的发射振幅相干叠加，无需制备材料相干性。泵浦频率决定类轴子粒子能量，使该源可连续调谐。产生率与两束泵浦功率的乘积及源长度的平方成正比。共振吸收后伴随荧光完成探测方案。对于基准晶体和激光参数，一年运行可达到\ng_{ae}≃2.8×10^{-11}的探测范围，大幅提升纯实验室对低质量类轴子粒子搜索的灵敏度。
英文摘要
We propose a macroscopically coherent laboratory source of axion-like particles (ALPs) through the axion--electron coupling \(g_{ae}\). Two counterpropagating optical modes drive reverse parametric fluorescence in a crystal, where two pump photons are converted into a relativistic ALP through virtual ionic transitions, while the medium returns to its initial state. Phase matching enables emission amplitudes from many ions to add coherently without preparing material coherence. The pump frequencies determine the ALP energy, making the source continuously tunable. The production rate scales with the product of the two pump powers and the square of the source length. Resonant absorption followed by fluorescence completes the detection scheme. For benchmark crystal and laser parameters, a one-year operation gives a reach of \(g_{ae}\simeq2.8\times10^{-11}\), substantially improving the sensitivity of purely laboratory-based searches for low-mass ALPs.
