Nonlinear absorption and refraction in near-detuned rubidium vapor

铷中通过失谐微波跃迁的里德伯激发

Rydberg excitation through detuned microwave transition in rubidium

本文研究热铷蒸气中里德伯态的激发，通过反向波长激发和电磁感应透明观察微波耦合效应，并演示失谐激发到次级里德伯态，为里德伯态波混频过程提供了激发与态选择的灵活性。

Blue-detuned optical ring trap for Bose-Einstein condensates based on conical refraction

We present a novel approach for the optical manipulation of neutral atoms in annular light structures produced by the phenomenon of conical refraction occurring in biaxial optical crystals. For a beam focused to a plane behind the crystal, the focal plane exhibits two concentric bright rings enclosing a ring of null intensity called the Poggendorff ring. We demonstrate both theoretically and experimentally that the Poggendorff dark ring of conical refraction is confined in three dimensions by regions of higher intensity. We derive the positions of the confining intensity maxima and minima and …

Production of rubidium Bose-Einstein condensate in an optically-plugged magnetic quadrupole trap

We have experimentally produced rubidium Bose-Einstein condensate in an optically-plugged magnetic quadrupole (OPQ) trap. A far blue-detuned focused laser beam with a wavelength of 532 nm is plugged in the center of the magnetic quadrupole trap to increase the number of trapped atoms and suppress the heating. A radio frequency (RF) evaporative cooling in the magneto-optical hybrid trap is applied to decrease the atom temperature into degeneracy. The atom number of the condensate is $1.2(0.4)\times10^5$ and the temperature is below 100 nK. We have also studied characteristic behaviors of the co…

温铷蒸气的非线性折射率

Nonlinear refractive index of warm rubidium vapor

基于光学布洛赫方程计算温铷蒸气的线性和非线性折射率，与干涉测量实验定量吻合，获得高达10^{-4} cm^2/W的Kerr非线性折射率。

惰性背景气体与光照明对铷蒸气三色电磁诱导透明的影响

Effects of inert background gases and photo-illumination on three-color electromagnetically induced transparency of rubidium vapor

本研究探究惰性气体与光照明对室温铷蒸气三色里德堡EIT的影响，揭示了超精细碰撞诱导的蓝失谐伴线规律及惰性气体对光致静电场的抑制作用，为相关光谱研究与传感、电场诊断应用提供支撑。