Femtosecond laser inscription of waveguides and Bragg gratings in transparent cyclic olefin copolymers GL Roth, S Hessler, S Kefer, M Girschikofsky, C Esen, R Hellmann Optics Express 28 (12), 18077-18084, 2020 | 22 | 2020 |
High-temperature stable and sterilizable waveguide Bragg grating in planar cyclo-olefin copolymer M Rosenberger, S Kefer, M Girschikofsky, GL Roth, S Hessler, S Belle, ... Optics letters 43 (14), 3321-3324, 2018 | 22 | 2018 |
Polymer photonic crystal waveguides generated by femtosecond laser GL Roth, S Kefer, S Hessler, C Esen, R Hellmann Laser & Photonics Reviews 15 (11), 2100215, 2021 | 19 | 2021 |
Fs-laser based hybrid micromachining for polymer micro-opto electrical systems GL Roth, J Haubner, S Kefer, C Esen, R Hellmann Optics and Lasers in Engineering 137, 106362, 2021 | 13 | 2021 |
Hypersensitive H2 sensor based on polymer planar Bragg gratings coated with Pt-loaded WO3-SiO2 S Kefer, J Dai, M Yang, B Schmauss, R Hellmann Optics Letters 45 (13), 3601-3604, 2020 | 13 | 2020 |
Tunable bulk polymer planar Bragg gratings electrified via femtosecond laser reductive sintering of CuO Nanoparticles S Kefer, K Bischoff, GL Roth, J Haubner, B Schmauss, R Hellmann Advanced Optical Materials 9 (13), 2002203, 2021 | 11 | 2021 |
Robust polymer planar Bragg grating sensors embedded in commercial-grade composites S Kefer, T Sauer, S Hessler, M Kaloudis, B Schmauss, R Hellmann Polymers 12 (3), 715, 2020 | 9 | 2020 |
Sapphire Photonic Crystal Waveguides with Integrated Bragg Grating Structure S Kefer, GL Roth, J Zettl, B Schmauss, R Hellmann Photonics 9 (4), 234, 2022 | 8 | 2022 |
Integration of Microfluidic and Photonic Components within Transparent Cyclic Olefin Copolymers by Using fs Laser. GL Roth, S Kefer, S Hessler, C Esen, R Hellmann Journal of Laser Micro/Nanoengineering 16 (1), 2021 | 8 | 2021 |
Multipurpose polymer Bragg grating-based optomechanical sensor pad S Hessler, P Bott, S Kefer, B Schmauss, R Hellmann Sensors 19 (19), 4101, 2019 | 8 | 2019 |
Femtosecond laser-based micromachining of rotational-symmetric sapphire workpieces S Kefer, J Zettl, C Esen, R Hellmann Materials 15 (18), 6233, 2022 | 6 | 2022 |
Microstructure-based fiber-to-chip coupling of polymer planar Bragg gratings for harsh environment applications S Kefer, T Sauer, S Hessler, M Kaloudis, R Hellmann Sensors 20 (19), 5452, 2020 | 6 | 2020 |
Micromilling-assisted fabrication of monolithic polymer ridge-type waveguides with integrated photonic sensing structures S Kefer, D Pape, GL Roth, S Hessler, B Schmauss, R Hellmann Optical Materials Express 11 (8), 2389-2400, 2021 | 4 | 2021 |
Fabrication and applications of polymer planar Bragg grating sensors based on cyclic olefin copolymers S Kefer, M Rosenberger, S Hessler, M Girschikofsky, S Belle, GL Roth, ... 2019 Photonics & Electromagnetics Research Symposium-Fall (PIERS-Fall), 647-655, 2019 | 4 | 2019 |
High temperature stable polymer planar waveguide Bragg grating sensors M Rosenberger, S Hessler, M Girschikofsky, S Kefer, S Belle, R Hellmann, ... 2018 IEEE 7th International Conference on Photonics (ICP), 1-3, 2018 | 4 | 2018 |
Integration of Bragg grating sensors in components made of Carbon fiber reinforced polymers T Sauer, S Kefer, W Ruppert, R Hellmann, M Kaloudis Tagungsband, 806-810, 2019 | 2 | 2019 |
Birefringence in Injection-Molded Cyclic Olefin Copolymer Substrates and Its Impact on Integrated Photonic Structures S Kefer, T Limbach, N Pape, K Klamt, B Schmauss, R Hellmann Polymers 16 (2), 168, 2024 | 1 | 2024 |
Towards pressure sensors based on polymer planar Bragg gratings S Kefer, N Pape, N Gries, GL Roth, B Schmauss, R Hellmann Organic Photonic Materials and Devices XXV 12418, 65-70, 2023 | 1 | 2023 |
Space-variant polarization conversion with artificial birefringent metallic elements S Belle, SF Helfert, S Kefer, R Hellmann, J Jahns Optics Letters 47 (8), 2024-2027, 2022 | 1 | 2022 |
Spatially Resolved, Real-Time Polarization Measurement Using Artificial Birefringent Metallic Elements S Belle, S Kefer, R Hellmann Photonics 11 (5), 397, 2024 | | 2024 |