Mode-matched phase diffractive optical element for detecting laser modes with spiral phases

Michael A. Golub*, Liran Shimshi, Nir Davidson, Asher A. Friesem

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A new type of diffractive optical element for detecting and measuring the power distribution of transverse modes emanating from radially symmetric laser resonators is presented. It is based on a relatively simple straightforward design of a phase-only diffractive optical element that serves as a matched filter, which correlates between specific prerecorded transverse modes with a certain azimuthal mode order and those in the incident laser light. Computer simulations supported by experimental results demonstrate how such elements can accurately detect modes with spiral phases and provide quantitative results on the modal power distribution.

Original languageEnglish
Pages (from-to)7823-7828
Number of pages6
JournalApplied Optics
Volume46
Issue number32
DOIs
StatePublished - 10 Nov 2007

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