Improvement of Axial Resolution in Confocal Microscopy by an
Optical Pupil Filter with Two Zones Phase-Shifted by π

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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