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径向偏振光是指在光束圆形横截面内,电场矢量方向沿半径方向,并且电场矢量和场幅均呈现轴对称性的光束。这类光束广泛应用于电子加速、金属切割、离子捕获、高分辨率显微技术等领域。最近,Optics Letters上发表了上海光机所李建郎研究员被动调Q脉冲式径向偏振激光器的最新研究结果。他利用端面抽运的微片激光器并附加以具有高度偏振选择性的光子晶体光栅镜,克服了早先激光效率低、径向偏振纯度低、光束轴对称性差等问题。本期编辑采访了李建郎研究员,深入了解径向偏振激光器的研发历程。(左图为径向偏振微片激光器实验装置图)
Radial polarization refers to the beam in the circular cross-section of the beam, the direction of the electric field along the radius of the vector, and the electric field and field amplitude axisymmetric beam. Such beams are widely used in electronic acceleration, metal cutting, ion capture, high-resolution microscopy and other fields. Recently, Optics Letters published the latest research results of passive Q-switched radial-polarized pulsed radial lasers by researcher Li Jianlang at Shanghai Institute of Optics and Fine Mechanics. He used end-pumped microchip lasers and attached photonic crystal grating mirrors with high polarization selectivity to overcome the problems of earlier laser inefficiencies, low radial polarization, and poor beam axis symmetry. The current editor interviewed researcher Li Jianlang, in-depth understanding of the research and development of radial polarized laser. (The left picture shows a radial polarization microtiter laser experimental setup)