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https://hdl.handle.net/20.500.14279/23008
Τίτλος: | Holmium monolithic fiber lasers: An investigation of the fiber Bragg grating spatial dimensions on fiber laser performance | Συγγραφείς: | Theodosiou, Antreas Aubrecht, Jan Peterka, Pavel Kalli, Kyriacos |
Major Field of Science: | Engineering and Technology | Field Category: | Electrical Engineering - Electronic Engineering - Information Engineering | Λέξεις-κλειδιά: | Femtosecond laser;Fiber Bragg gratings;Holmium fiber lasers;Medium infrared fiber lasers;Monolithic fiber laser | Ημερομηνία Έκδοσης: | 2021 | Πηγή: | Micro-structured and Specialty Optical Fibres VII, 2021, 19–23 April | Conference: | Micro-structured and Specialty Optical Fibres | Περίληψη: | We have investigated how the physical dimensions of a fiber Bragg grating (FBG) may affect the performance of a monolithic fiber laser system. In particular, we perform a series of direct laser inscriptions in a Holmium-doped single mode fiber using the plane-by-plane femtosecond laser inscription method, using exactly the same inscription conditions but having different grating widths. Specifically, the gratings were divided in to three groups; group 1, gratings inscribed with planes having widths smaller of the core size but in the center of the fiber; group 2, gratings inscribed with plane widths similar to the core diameter and group 3, gratings with plane widths larger the core diameter that were extended uniformly in to cladding region. All the gratings were characterized in a fiber laser configuration and their performance were analyzed using as metrics the threshold power, the effective length and the power slope efficiency. We note that all the gratings were designed to have a resonance Bragg wavelength at 2.1 μm, having the same length and inscribed directly through the fiber coating. The monolithic fiber laser strands were pumped using Thulium-doped fiber laser operating at 1.95 μm. The results clearly show that the spatial dimensions of the FBGs are certainly an important parameter that is required for consideration during the development of the monolithic fiber lasers, especially for medium and high-power fiber laser systems. | URI: | https://hdl.handle.net/20.500.14279/23008 | ISBN: | 9781510643819 | DOI: | 10.1117/12.2592374 | Rights: | © SPIE Attribution-NonCommercial-NoDerivatives 4.0 International |
Type: | Conference Papers | Affiliation: | Lumoscribe LTD Cyprus University of Technology Czech Academy of Sciences |
Publication Type: | Peer Reviewed |
Εμφανίζεται στις συλλογές: | Δημοσιεύσεις σε συνέδρια /Conference papers or poster or presentation |
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