Three-zone pupil filters

Colin J.R. Sheppard, Juan Campos, Juan C. Escalera, Silvia Ledesma

Research output: Contribution to journalArticleResearchpeer-review

25 Citations (Scopus)


The performance of pupil filters consisting of three zones each of constant complex amplitude transmittance is investigated. For filters where the transmittance is real, different classes of potentially useful filter are identified. These include leaky filters with an inner zone of low amplitude transmittance, pure phase filters with phase change of π, and equal area filters. © 2008.
Original languageEnglish
Pages (from-to)3623-3630
JournalOptics Communications
Publication statusPublished - 15 Jul 2008


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