Publicación:
ANOMALOUS SECOND HARMONIC GENERATION OF TWISTED GAUSSIAN SCHELL MODEL BEAMS

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dc.creatorGUSTAVO CAÑAS CARDONA
dc.date2024
dc.date.accessioned2025-01-10T15:49:27Z
dc.date.available2025-01-10T15:49:27Z
dc.date.issued2024
dc.description.abstractWE INVESTIGATE THEORETICALLY AND EXPERIMENTALLY THE OPTICAL SECOND HARMONIC GENERATION (SHG) WITH A TWISTED GAUSSIAN SCHELL MODEL (TGSM) BEAM AS THE FUNDAMENTAL FIELD. WE USE TYPE-II PHASE MATCHING AND ANALYZE THE CROSS SPECTRAL DENSITY (CSD) OF THE SHG OUTPUT BEAM WHEN THE INPUT FUNDAMENTAL IS PREPARED WITH A TGSM STRUCTURE. WE ANALYZE TWO SYNTHETIZATION METHODS FOR PREPARING THE TGSM FUNDAMENTAL BEAM AND WE FIND THAT FOR ONE METHOD THE SHG IS ALSO A TGSM BEAM. FOR THE OTHER METHOD, WE FIND THAT THE SHG IS NOT A TGSM BEAM AND PRESENTS AN ANOMALOUS CSD POSSESSING A DIP INSTEAD OF A PEAK IN THE TRANSVERSE SPATIAL STRUCTURE. MOREOVER, WE SHOW THAT THE DIP DEPTH IS DIRECTLY RELATED TO THE TWISTED PHASE PARAMETER, BEING ABSENT FOR A NON TWISTED GSM BEAM. OUR RESULTS SHOW THAT THE SHG FROM A FUNDAMENTAL TGSM BEAM CAN RESULT IN A DOUBLED FREQUENCY TGSM OR IN A NON-TGSM BEAM DEPENDING ON THE SYNTHETIZATION METHOD.
dc.formatapplication/pdf
dc.identifier.doi10.1016/j.optlastec.2024.110983
dc.identifier.issn1879-2545
dc.identifier.issn0030-3992
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/13820
dc.languagespa
dc.publisherOPTICS AND LASER TECHNOLOGY
dc.relation.uri10.1016/j.optlastec.2024.110983
dc.rightsPUBLICADA
dc.subjectTwisted Gaussian Schell model beams
dc.subjectSecond harmonic generation
dc.titleANOMALOUS SECOND HARMONIC GENERATION OF TWISTED GAUSSIAN SCHELL MODEL BEAMS
dc.typeARTÍCULO
dspace.entity.typePublication
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE FISICA
ubb.SedeCONCEPCIÓN
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