CAJ | 학술논문

利用理查德-沃耳夫矢量衍射积分,分析了初级球差对圆偏振涡旋贝塞耳-高斯光束聚焦光场的影响,获得不同球差系数下的光强分布.结果表明,当初级球差系数增加,会聚光点偏离系统焦平面,纵向光场发生改变;焦点光强逐渐减小,焦平面光场发生变化;光轴上光强峰值逐渐减小,峰值两侧的旁瓣变化趋势相反,光强由对称分布变成非对称分布;初级球差对贝塞耳-高斯光束聚焦光场的影响不依赖其偏振态;离焦无法完全补偿初级球差对聚焦光场的影响.
이용리사덕-옥이부시량연사적분,분석료초급구차대원편진와선패새이-고사광속취초광장적영향,획득불동구차계수하적광강분포.결과표명,당초급구차계수증가,회취광점편리계통초평면,종향광장발생개변;초점광강축점감소,초평면광장발생변화;광축상광강봉치축점감소,봉치량측적방판변화추세상반,광강유대칭분포변성비대칭분포;초급구차대패새이-고사광속취초광장적영향불의뢰기편진태;리초무법완전보상초급구차대취초광장적영향.
Effect of primary spherical aberration on the tight focusing of circularly polarized vortex Bessel-Gaussian beams was studied by the Richards-Wolf vectorial integral. Results were presented for intensity distribution along longitudinal direction,at focal plane and on the optical axis. The results shows that the increase of spherical aberration make converging point shift focal plane and longitudinal field take a change.focal intensity decrease and optical field at focal plane take a change,light maximum on the optical axis decrease,change of bilateral side lobes around light maximum with primary spherical aberration takes on inverted trend and onaxis intensity become asymmetry from symmetry, effect of primary spherical aberration on tightly focusing of Bessel-Gaussian beams don t depend on its polarization state,defocus can t compensate perfectly spherical aberration.