金刚石微波激射器中的非线性集体动力学与微波梳产生
Nonlinear collective dynamics and microwave comb generation in a diamond maser
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中文总结 AI 辅助
该研究在室温氮空位金刚石微波激射器中发现随泵浦功率升高的三个动力学阈值，实现了微波梳产生，确立其作为非线性非平衡光-物质动力学研究的室温平台。
中文摘要 AI 辅助
光泵浦室温微波激射器是研究超出稳态发射的受激耗散自旋光子物理的有前景平台。本文在室温氮空位金刚石微波激射器中观察到，当光泵浦功率超过常规激射阈值时，会出现一系列动力学阈值：第一个阈值产生窄线连续波发射；第二个阈值产生周期性微波脉冲序列，其重复率生成频率梳谱；更高泵浦功率下，第三个阈值产生带有振荡、频率啁啾衰减的脉冲。时间分辨测量将该梳直接关联到自脉冲动力学，对单个脉冲的傅里叶分析显示，频率分布较宽，与非均匀展宽系综中的集体自旋-谐振器动力学一致。这些结果确立了金刚石微波激射器作为室温下研究非线性非平衡光-物质动力学及微波梳产生的平台。
英文摘要
Optically pumped room temperature masers are a promising platform for driven dissipative spin photon physics beyond steady state emission. Here we observe a sequence of dynamical thresholds in a room temperature nitrogen vacancy diamond maser as the optical pump is increased above the conventional masing threshold. The first threshold yields narrow-line continuous wave emission, while a second threshold produces a periodic train of microwave pulses whose repetition rate generates a frequency comb spectrum. At higher pump power, a third threshold gives rise to pulses with an oscillatory, frequency chirped decay. Time-resolved measurements link the comb directly to self-pulsing dynamics and Fourier analysis of individual bursts reveals a broad distribution of frequencies consistent with collective spin-resonator dynamics in an inhomogeneously broadened ensemble. These results establish the diamond maser as a room temperature platform for nonlinear nonequilibrium light matter dynamics and microwave comb generation.
