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Optica, Optics Letters, 14(38), p. 2484, 2013

DOI: 10.1364/ol.38.002484

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Type I and type II second harmonic generation of conically refracted beams

Journal article published in 2013 by Alex Turpin, Yury Loiko, Todor K. Kalkandjiev, José Francisco Trull Silvestre ORCID, Crina Cojocaru, Jordi Mompart
This paper is available in a repository.
This paper is available in a repository.

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Abstract

Type I and type II second harmonic generation (SHG) of a beam transformed by the conical refraction phenomenon are presented. We show that, for type I, the second harmonic intensity pattern is a light ring with a point of null intensity while, for type II, the light ring possesses two dark regions. Taking into account the different two-photon processes involved in SHG, we have derived analytical expressions for the resulting transverse intensity patterns that are in good agreement with the experimental data. Finally, we have investigated the spatial evolution of the second harmonic signals, showing that they behave as conically refracted beams. ; Peer Reviewed ; Postprint (published version)