Proceedings of the 11th International Conference on Photonics, Optics and Laser Technology Acronym: PHOTOPTICS 2023 Event held on: February 16-18, 2023, in Lisbon, Portugal Editors: Domenico de Ceglia 1 , Maria Raposo 2 , Paulo Ribeiro 2 and Pablo Albella 3 Affiliations: 1 University of Brescia, Italy , 2 LIBPhys, NOVA School of Science and Technology, Portugal , 3 University of Cantabria, Spain ISBN: 978-989-758-632-3