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14 March 2023 High-power multi-emitter modules with fiber Bragg grating stabilization
Alessandro Mirigaldi, Valentina Serafini, Gabriella Motta, Guido Perrone
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Proceedings Volume 12403, High-Power Diode Laser Technology XXI; 124030L (2023) https://doi.org/10.1117/12.2651350
Event: SPIE LASE, 2023, San Francisco, California, United States
Abstract
The paper reports on the wavelength stabilization of high-power laser diode multi-emitter modules using as the external reflectors fiber Bragg gratings that are directly inscribed into the large mode area module delivery fiber using a femtosecond laser. Experiments have been carried out in a 200 μm fiber at 976 nm, but the approach can be extended at other fiber diameters and wavelengths. The results have demonstrated an effective stabilization over a broad driving current range, with power penalties in line or slightly lower than those of more traditional architectures that make use of discrete components, such as volume Bragg gratings, but with the advantage of not requiring the alignment of additional elements.
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Alessandro Mirigaldi, Valentina Serafini, Gabriella Motta, and Guido Perrone "High-power multi-emitter modules with fiber Bragg grating stabilization", Proc. SPIE 12403, High-Power Diode Laser Technology XXI, 124030L (14 March 2023); https://doi.org/10.1117/12.2651350
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KEYWORDS
Fiber Bragg gratings
Laser stabilization
Semiconductor lasers
Diodes
High power lasers
Multiplexing
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