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STED microscopy based on axially symmetric polarized vortex beams |
Zhehai Zhou(周哲海), Lianqing Zhu(祝连庆) |
Beijing Key Laboratory for Optoelectronic Measurement Technology, Beijing Information Science and Technology University, Beijing 100192, China |
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Abstract 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.
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Received: 03 November 2015
Revised: 14 December 2015
Accepted manuscript online:
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PACS:
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07.60.-j
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(Optical instruments and equipment)
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42.15.Eq
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(Optical system design)
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42.25.Ja
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(Polarization)
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42.30.-d
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(Imaging and optical processing)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61108047 and 61475021), the Natural Science Foundation of Beijing, China (Grant No. 4152015), the Program for New Century Excellent Talents in Universities of China (Grant No. NCET-13-0667), and the Top Young Talents Support Program of Beijing, China (Grant No. CIT&TCD201404113). |
Corresponding Authors:
Zhehai Zhou, Lianqing Zhu
E-mail: zhouzhehai@bistu.edu.cn;zhulianqing@sina.com
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Cite this article:
Zhehai Zhou(周哲海), Lianqing Zhu(祝连庆) STED microscopy based on axially symmetric polarized vortex beams 2016 Chin. Phys. B 25 030701
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