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Abstract
We found an error in Fig. 1 of our article “White-light Quantitative Phase Imaging Unit.” Here we publish the revised figure.
© 2017 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Figure 1 in [1] shows incorrect optic axes of the crystals of the white-light quantitative phase imaging unit (WQPIU). The optic axis of the beam displacer should head the upper-right corner, making a 45 degree with respect to the surface normal. The optic axis of the optical path difference (OPD) compensator should lie in parallel to the polarization of the ordinary ray. The revised figure is shown below.
Fig. 1 (a) The schematic of the WQPIU. The WQPIU is composed of a beam displacer, a liquid crystal variable retarder, an OPD compensator and a linear polarizer. A black arrow and a black dot indicate an optic axis of each crystal. Orange arrows and dots indicate the polarization of light. (b) A photograph of the WQPIU attached to a microscope. (Inset) A photograph of the WQPIU and the CCD (c) Phase shifted interferograms recorded by the CCD. Total 4 images are recorded with phase delays of 0, π/2, π, and 3π/2 respectively.
Disclosures
K. Lee, Dr. K. Kim, and Prof. Y. Park has financial interests in Tomocube Inc., a company that commercializes ODT and quantitative phase imaging instruments.
Funding
This work was supported by KAIST, and the National Research Foundation of Korea (2015R1A3A2066550, 2014K1A3A1A09063027, 2012-M3C1A1-048860, 2014M3C1A3052537) and Innopolis Foundation (A2015DD126).
References and links
1. Y. Baek, K. Lee, J. Yoon, K. Kim, and Y. Park, “White-light quantitative phase imaging unit,” Opt. Express 24(9), 9308–9315 (2016). [CrossRef] [PubMed]
