基于延时相干控制的光增益调制

针对传统的弱场光增益相干控制方案中控制参数单一且难以实现精确控制的现状,提出了一种在简并二能级原子体系中利用延时实现弱光增益控制的新方案。方案以一强一弱两个偏振方向相互垂直的序列脉冲作用于简并二能级原子体系中,先由强场预置相干态,然后用有延时的弱场探测该相干体系。通过理论研究弱场的传播特性与延时间的关系,发现利用延时控制可以实现对弱场共振作用的开关控制,并精确调制弱场的增益。     

Near-Threshold Low Rydberg Depletion Spectroscopy of H2, D2, and HD

Using high-resolution depletion spectroscopy, we have experimentally studied the physics of near-threshold low Rydberg states of all three stable isotopic variants of molecular hydrogen. The experiments were required to calibrate the absolute wavelength, including several transitions from the EF (v = 0) and EF (v = 6 or v = 9) to the same low-n Rydberg states. The measurements have been performed for several initial rotational levels in all three stable isotopic variants. Transitions to very high vibrational levels of the B, Bt, and C states have been measured with accuracy 0.002cm^-1. The pulsed amplifier perturbations were also measured by opticalhe terodyne methods.     

多通道电离过程中光电子角分布的干涉分析

基于光电子成像光谱技术原理,研究了双光子共振三光子电离方法获得的光电子成像图谱.着重分析了多通道电离过程中光电子的干涉作用对成像光谱的影响.结果表明,多通道电离过程中产生的光电子角分布与激发态的能态特点有关.