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DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 171 | - |
dc.citation.number | 2 | - |
dc.citation.startPage | 164 | - |
dc.citation.title | IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY | - |
dc.citation.volume | 7 | - |
dc.contributor.author | Sawant, Ashwini | - |
dc.contributor.author | Yu, Dongho | - |
dc.contributor.author | Kim, Dongsung | - |
dc.contributor.author | Choe, Mun Seok | - |
dc.contributor.author | Choi, EunMi | - |
dc.date.accessioned | 2023-12-21T22:38:41Z | - |
dc.date.available | 2023-12-21T22:38:41Z | - |
dc.date.created | 2017-01-04 | - |
dc.date.issued | 2017-03 | - |
dc.description.abstract | We present a phase coefficient optimization technique for determining the vortex charge of a high-power orbital angular momentum beam. This high-power vortex beam is generated by transmitting a Gaussian-like beam emitted by a gyrotron with an output power of 25 kW through a spiral phase plate (SPP), which introduces a vorticity at the center of the beam characterized by the geometrical parameters of the SPP. One rigorous, intensity-measurement-based, phase retrieval technique, known as the Gerchberg-Saxton algorithm, does not converge to a correct solution because of the presence of a phase singularity in the high-power vortex beam. Here, we introduce a new phase retrieval algorithm that chooses an appropriate initial phase estimate. This technique yields successful vortex charge determination for both low- and high-power vortex beams. The retrieved intensity profiles show 99.51% and 99.27% intensity regeneration at measurement planes with optimized initial phase estimates for the low- and high-power beams, respectively. | - |
dc.identifier.bibliographicCitation | IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY, v.7, no.2, pp.164 - 171 | - |
dc.identifier.doi | 10.1109/TTHZ.2016.2637868 | - |
dc.identifier.issn | 2156-342X | - |
dc.identifier.scopusid | 2-s2.0-85008512351 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/21091 | - |
dc.identifier.url | http://ieeexplore.ieee.org/document/7802640/ | - |
dc.identifier.wosid | 000396388900006 | - |
dc.language | 영어 | - |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.title | Generation and Validation of Topological Charges of High-Power Gyrotron Orbital Angular Momentum Beams From Phase Retrieval Algorithm | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Engineering, Electrical & Electronic; Optics; Physics, Applied | - |
dc.relation.journalResearchArea | Engineering; Optics; Physics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Gyrotron | - |
dc.subject.keywordAuthor | orbital angular momentum (OAM) | - |
dc.subject.keywordAuthor | phase retrieval | - |
dc.subject.keywordAuthor | vortex beams | - |
dc.subject.keywordPlus | FOURIER-TRANSFORM | - |
dc.subject.keywordPlus | SPIRAL PHASEPLATE | - |
dc.subject.keywordPlus | LASER-BEAMS | - |
dc.subject.keywordPlus | RECONSTRUCTION | - |
dc.subject.keywordPlus | SINGULARITIES | - |
dc.subject.keywordPlus | INTENSITY | - |
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