Power scaling of laser diode modules using high-power DBR chips

Alessandro Mirigaldi; Valentina Serafini; Paola Gotta; Giulia Pippione; Claudio Coriasso; Roberto Paoletti; Guido Perrone

doi:10.1117/12.2544947

2 March 2020 Power scaling of laser diode modules using high-power DBR chips

Alessandro Mirigaldi, Valentina Serafini, Paola Gotta, Giulia Pippione, Claudio Coriasso, Roberto Paoletti, Guido Perrone

Author Affiliations +

Proceedings Volume 11262, High-Power Diode Laser Technology XVIII; 112620W (2020) https://doi.org/10.1117/12.2544947
Event: SPIE LASE, 2020, San Francisco, California, United States

Abstract

A family of laser diode modules emitting hundreds of watt and based on intrinsically wavelength stabilized narrow linewidth high-power Distributed Bragg Reflector (DBR) chips has been manufactured and fully characterized. The module layout exploits a proprietary architecture to combine through spatial and wavelength multiplexing several highly manufacturable chips that integrate a grating and therefore do not require additional external stabilization devices to allow dense wavelength multiplexing. Power levels going from 200W to 400W in a 135 micron core fiber have been achieved using two to four wavelengths. The narrow spectral emission of each chip makes the modules suitable not only for direct-diode material processing, but also for laser pumping.

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Citation Download Citation

Alessandro Mirigaldi, Valentina Serafini, Paola Gotta, Giulia Pippione, Claudio Coriasso, Roberto Paoletti, and Guido Perrone "Power scaling of laser diode modules using high-power DBR chips", Proc. SPIE 11262, High-Power Diode Laser Technology XVIII, 112620W (2 March 2020); https://doi.org/10.1117/12.2544947

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