中国物理B ›› 2016, Vol. 25 ›› Issue (3): 30701-030701.doi: 10.1088/1674-1056/25/3/030701
Zhehai Zhou(周哲海), Lianqing Zhu(祝连庆)
Zhehai Zhou(周哲海), Lianqing Zhu(祝连庆)
摘要: A stimulated emission depletion (STED) microscopy scheme using axially symmetric polarized vortex beams is proposed based on unique focusing properties of such kinds of beams. The concept of axially symmetric polarized vortex beams is first introduced, and the basic principle about the scheme is described. Simulation results for several typical beams are then shown, including radially polarized vortex beams, azimuthally polarized vortex beams, and high-order axially symmetric polarized vortex beams. The results indicate that sharper doughnut spots and thus higher resolutions can be achieved, showing more flexibility than previous schemes based on flexible modulation of both phase and polarization for incident beams.
中图分类号: (Optical instruments and equipment)