Greifswald 2024 – scientific programme

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SYEC: Symposium Lasers and Photonic Technologies for Environmental Challenges

SYEC 1: Laser-Based Micro-/Nanostructuring for Environmental Challenges

SYEC 1.1: Invited Talk

Tuesday, February 27, 2024, 11:10–11:40, ELP 6: HS 1

Nanostructured optical waveguides inside YAG crystals as a crucial step towards the development of microlasers for advanced sensing applications — •Omar de Varona^1,2, Franzette Paz-Buclatin¹, Paul Santos¹, Pablo Molina³, Leopoldo Martín^1,2, and Airán Ródenas^1,2 — ¹Department of Physics, University of La Laguna, 38200 Santa Cruz de Tenerife, Spain — ²Instituto Universitario de Estudios Avanzados en Física Atómica, Molecular y Fotónica (IUDEA), University of La Laguna, 38200 Santa Cruz de Tenerife, Spain — ³Departamento de Física de Materiales, Instituto de Materiales Nicolás Cabrera and Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, 28049 Madrid, Spain

Nanophotonics stands as a pivotal technology to fight climate change, offering diverse solutions across multiple disciplines. Recent advancements in fabrication processes have enabled spectrum engineering, plasmonic nanoparticles techniques and miniaturization of light-trapping and guiding structures. These innovations equip researchers with novel tools for applications spanning from CO2 capture and enhancement of solar energy harvesting efficiency, to precise detection of pollutants for air and water monitoring. This presentation delves into the fabrication process of 3D nanostructures within crystalline materials tailored for photonic applications by means of femtosecond laser lithography. We report our latest results on the production of waveguides embedded in YAG crystals as a crucial step towards the development of microlasers for advanced sensing applications.

Keywords: Nanophotonics; Crystal Waveguides; Femtosecond laser lithography; Pollutant Sensing