论文标题
在热原子合奏中引用的10^{ - 18}不稳定激光的前景
Prospects for 10^{-18} Instability Laser Referenced on Thermal Atomic Ensembles
论文作者
论文摘要
提出了具有较高频率稳定性的基于热原子的激光源，该激光源依赖于丰富的非零透明速度原子集合所产生的累积贡献。与传统的情况相比，仅利用只有接近零横向速度的原子，热钙束的光学拉姆西边缘的振幅才能通过三个数量级或更多的数量级或更高的数量级来大大增强，因此，信号 - 噪声比可以提高33倍倍。基于原子干扰素基于激光稳定的最新结果，量子投影噪声限制的频率不稳定性小于2e-17/tau^0.5是可行的。这样的超级激光在包括计量学和天文学在内的各个领域具有有希望的应用。
A thermal atomic ensemble-based laser source with superior frequency stability is proposed that relies on the accumulated contributions from an abundance of nonzero-transverse-velocity atomic ensembles. Compared with the traditional case in which only atoms with near-zero transverse velocities are utilized, the amplitude of the optical Ramsey fringes for a thermal calcium beam can be dramatically enhanced by three orders of magnitude or more, thus, the signal-to-noise ratio can be improved 33-fold. Based on the recent results of atomic interferometry-based laser stabilization, a quantum projection noise-limited frequency instability less than 2E-17/tau^0.5 is feasible. Such an ultrastable laser has promising applications in diverse areas, including metrology and astronomy.
