Spin to orbital angular momentum transfer in frequency up-conversion

Autor:	Pinheiro da Silva Braian, Buono Wagner T., Pereira Leonardo J., Tasca Daniel S., Dechoum Kaled, Khoury Antonio Z.
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	nonlinear optics oam second harmonic generation structured light Physics QC1-999
Zdroj:	Nanophotonics, Vol 11, Iss 4, Pp 771-778 (2021)
Druh dokumentu:	article
ISSN:	2192-8614 2021-0493
DOI:	10.1515/nanoph-2021-0493
Popis:	We demonstrate the spin to orbital angular momentum transfer in frequency upconversion with structured light beams. A vector vortex is coupled to a circularly polarized Gaussian beam in noncollinear second harmonic generation under type-II phase match. The second harmonic beam inherits the Hermite–Gaussian components of the vector vortex; however, the relative phase between them is determined by the polarization state of the Gaussian beam. This effect creates an interesting crosstalk between spin and orbital degrees of freedom, allowing the angular momentum transfer between them. Our experimental results match the theoretical predictions for the nonlinear optical response.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/7a90e620664742a48aa1b9a03a182612 Zobrazit plný text záznamu View record in DOAJ