6533b832fe1ef96bd129ad0f
RESEARCH PRODUCT
Zone plates with cells apodized by Legendre profiles
Manuel Martínez-corralPedro AndrésJorge Ojeda-castanedasubject
PhysicsDiffractionFocus (geometry)business.industryMaterials Science (miscellaneous)Spectral densityZone plateIndustrial and Manufacturing Engineeringlaw.inventionsymbols.namesakeOpticsFourier transformApodizationlawsymbolsTransmittanceBusiness and International ManagementbusinessLegendre polynomialsdescription
By apodizing the cells of a zone plate and changing the opening ratio, it is possible to shape the relative power spectrum of its foci. We describe a novel procedure that leads to an analytical formula for shaping the focus power spectrum by using apodizers expressible as the Legendre series; these act on cells of arbitrary opening ratio. Our general result is used to design zone plates that have missing foci and to discuss a synthesis procedure using apodizers with various opening ratios. Our applications can also be used for shaping the power spectrum of 1-D gratings.
year | journal | country | edition | language |
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1990-03-20 | Applied Optics |