Chin. Phys. Lett.  2003, Vol. 20 Issue (9): 1641-1643    DOI:
Original Articles |
Improvement of Axial Resolution in Confocal Microscopy by an Optical Pupil Filter with Two Zones Phase-Shifted by π
LIN Lie;WANG Xiang-Hui;WANG Zhao-Qi;MU Guo-Guang
United Academy of Nankai University and Tianjin University, Institute of Modern Optics, Nankai University, Tianjin 300071 Key Laboratory of Opto-electronic Information Science and Technology of Education Ministry, Nankai University, Tianjin 300071
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LIN Lie, WANG Xiang-Hui, WANG Zhao-Qi et al  2003 Chin. Phys. Lett. 20 1641-1643
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Abstract A filter with two zones phase-shifted by π is proposed to improve the axial resolution of confocal microscopes with a finite-sized detector. The optimum axial resolution for a given size of the detector can be achieved by adjusting the zone boundary of the filter. The experimental results are well in agreement with the theoretical predictions.
Keywords: 87.64.Tt      87.57.Ce      42.79.Ci     
Published: 01 September 2003
PACS:  87.64.Tt  
  87.57.Ce  
  42.79.Ci (Filters, zone plates, and polarizers)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2003/V20/I9/01641
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WANG Xiang-Hui
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MU Guo-Guang
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