1Institute of Modern Optics, Key Laboratory of Optoelectronic Information Science and Technology, Ministry of Education of China, Nankai University, Tianjin 300071, China
2Nankai University Affiliated Hospital, Tianjin 300121, China
Shibiao Wei, Jing Bu, Siwei Zhu, Xiaocong Yuan, "Image edge-enhancement in optical microscopy with a phase mismatched spiral phase plate," Chin. Opt. Lett. 9, 031001 (2011)
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