Freiburg 2024 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 13: Quantum Technologies

Q 13.3: Talk

Monday, March 11, 2024, 17:30–17:45, HS 3219

Hybrid Fiber-Solid State Laser with 3D-Printed Intracavity Lenses — •Simon Angstenberger, Pavel Ruchka, Mario Hentschel, Tobias Steinle, and Harald Giessen — 4th Physics Institute and Stuttgart Research Center of Photonic Engineering, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany

Microscale 3D-printing has revolutionized micro-optical applications ranging from endoscopy, imaging, to quantum technologies. In all these applications miniaturization is key, and in combination with the nearly unlimited design space it is opening novel avenues. Here, we push the limits of miniaturization and durability by realizing the first fiber laser system with intra-cavity on-fiber 3D-printed optics. We demonstrate stable laser operation at over 20 mW output power at 1063.4 nm with a full width half maximum (FWHM) bandwidth of 0.11 nm and a maximum output power of 37 mW. Furthermore, we investigate the power stability and degradation of 3D-printed optics at Watt power levels. The intriguing possibilities afforded by free-form microscale 3D-printed optics allow us to combine gain in a solid-state crystal with fiber guidance in a hybrid laser concept. Therefore, our novel ansatz enables the compact integration of bulk active media in fiber platforms at substantial power levels.