电磁驱动与电磁阻尼演示仪原理探究

将演示仪电磁驱动和电磁阻尼二者巧妙地结合起来,并利用单片机测量及数字化显示技术,更好地演示了电和磁这两种特殊物质抽象的物理本质和物理原理.     

原子类原子系统光学特性的量子相干调控应用基础研究

简要介绍了在原子类原子小量子系统光学特性的量子相干调控应用基础研究方面所取得的一些成果,主要包括周期调制场控制弱光孤子传输、光学腔超窄线宽输出、非对称双量子阱中光学前驱波的分离以及极性分子系统中的电磁诱导透明现象等.     

Sub-Half-Wavelength Atom Localization Based on Phase-Dependent Electromagnetically Induced Transparency

We present a realistic and efficient scheme for sub-half-wavelength atom localization. This scheme is based on the phase-dependent electromagnetically induced transparency in a four-level system in the double-A configuration. We use a strong bichromatic field （one component of which is standing-wave field） as the driving components, and a weak bichromatic field as the probe components. By choosing the collective phase of the four applied components, the atom is localized in either of the two half-wavelength regions with 50% detecting probability when the absorption to the probe fields is detected.     

基于亥姆霍兹线圈的磁聚焦实验研究

设计了磁聚焦现象观测实验仪器,使用亥姆霍兹线圈和透明的阴极射线管,能够直接观测到磁聚焦现象中粒子的整体运动轨迹区域,直观地展示了磁聚焦现象.同时该仪器还能够利用磁聚焦法测量带电粒子比荷,演示带电粒子的静电偏转效应以及磁效应.     

浅谈高校物理课程讲课比赛备赛经验

介绍全国高校物理基础课程青年教师讲课比赛,梳理总结了准备比赛过程中的经验和心得体会,以期对青年教师参赛和日常教学有所启发和帮助.物理专业青年教师通过参赛能够迅速提高自身业务水平,加强高校间同行教师交流,全面提升我国高校基础物理教学水平.     

大学物理创新教学中课程思政的有效融入——以“光学仪器的分辨本领”为例

课程思政在创新教学中作为一个重要组成部分,既担负着教书育人的责任,同时也是课程内容的强有力支撑.以大学物理课程中"光学仪器的分辨本领"一节为例,详细讨论了如何在大学物理课程创新教学中有机融入课程思政,激发学生爱国热情,增强民族自豪感.     

Propagation dynamics of nonlinear chirped optical laser pulses in a two-level medium

We investigate the propagation dynamics of nonlinear chirped optical laser pulses in a two-level medium. For certain chirp strength and chirp width, an incident 2π nonlinear chirped pulse will split into optical precursors and a stable self-induced transparency soliton. This is caused by the particular Fourier spectrum that includes not only central resonant frequency components but also high-frequency and low-frequency sidebands. Moreover, the effects of chirp parameters on the evolution of nonlinear chirped pulses are also discussed.