The Symposium of the National Institute of Optics (CNR-INO) provides a unique opportunity to share and discuss the latest scientific and technological advancements in the fields of optics. This volume collects the abstracts of the proposals presented by our institute's researchers, showcasing innovations, methodologies, and applications driving progress in strategic areas of optics. The diversity of contributions reflects the multidisciplinary nature of CNR-INO, bridging fundamental research and technological innovation to address contemporary scientific challenges and promote sustainable solutions. This collection aims not only to document the dedication of CNR-INO researchers but also to foster new collaborations and synergies, strengthening CNR-INO's role as an international leader in optical research.