Journal
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
Volume 26, Issue 2, Pages 297-304Publisher
Optica Publishing Group
DOI: 10.1364/JOSAA.26.000297
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- MIT Materials Processing Center
- MIT Center for Materials Science and Engineering
- MIT Deshpande Center
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We exploit a technique, based on nonlinear optimization, to design diffractive lenses that focus optical nulls without any phase singularities. To ensure ease of fabrication, these lenses are composed of concentric circular zones. Furthermore, we show that this technique is readily extended to multiple wavelengths and can be used to improve tolerance to fabrication errors. (C) 2009 Optical Society of America
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