| Full text | |
| Author(s): |
de Oliveira, M. Gil
;
Santos Junior, A. L. S.
;
Barbosa, A. C.
;
da Silva, B. Pinheiro
;
dos Santos, G. H.
;
Canas, G.
;
Ribeiro, P. H. Souto
;
Walborn, S. P.
;
Khoury, A. Z.
Total Authors: 9
|
| Document type: | Journal article |
| Source: | OPTICS AND LASER TECHNOLOGY; v. 176, p. 7-pg., 2024-04-09. |
| Abstract | |
We 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. (AU) | |
| FAPESP's process: | 21/06823-5 - Quantum Rio network |
| Grantee: | Antonio Zelaquett Khoury |
| Support Opportunities: | Research Projects - Thematic Grants |