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2. 1000 W blue fiber-coupled diode-laser emitting at 450 nm;Baumann,2019
3. LDMblue, “Optical Specification”,https://www.laserline.com/en-int/ldm-blue-diode-laser/ (2020)
4. Visible GaN laser diodes: from lowest thresholds to highest power levels;König,2019
5. 500 watt blue laser system for welding applications;Feve,2019