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arXiv 1509.01435quant-phphysics.optics
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单模波导场中光束缚点粒子的集体散射和振荡模式

Collective scattering and oscillation modes of optically bound point particles trapped in a single mode waveguide field

Daniela Holzmann, Helmut Ritsch

摘要:

激光的集体相干散射在可极化的点粒子之间产生强的光力。这些偶极力在光波导的场中在幅度和距离上被强烈增强,使得在低温下粒子以强约束的规则图案自排序。静止配置通常表现出具有强粒子和光约束的超辐射散射。在这里,我们研究的集体激发的自洽晶体粒子光结构的粒子数和泵强度的函数。多重散射和吸收改变了集体粒子场的本征频率,并产生了令人惊讶的复杂性质的本征模。对于较大的阵列,这往往会导致动态不稳定性和解体的结构,即使额外的阻尼存在。

英文摘要:

Collective coherent scattering of laser light induces strong light forces between polarizable point particles. These dipole forces are strongly enhanced in magnitude and distance within the field of an optical waveguide so that at low temperature the particles self-order in strongly bound regular patterns. The stationary configurations typically exhibit super-radiant scattering with strong particle and light confinement. Here we study collective excitations of such self-consistent crystalline particle-light structures as function of particle number and pump strength. Multiple scattering and absorption modify the collective particle-field eigenfrequencies and create eigenmodes of surprisingly complex nature. For larger arrays this often leads to dynamical instabilities and disintegration of the structures even if additional damping is present.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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