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9 March 2020 Advances in blue and near-IR high-power/high-brightness direct diode lasers using wavelength beam combining (Conference Presentation)
Francisco Villarreal, Wang Zhou, John Roethle, Matthew Sauter, Keita Inoue, Bryan Lochman, Bien Chann
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Proceedings Volume 11262, High-Power Diode Laser Technology XVIII; 112620U (2020) https://doi.org/10.1117/12.2544435
Event: SPIE LASE, 2020, San Francisco, California, United States
Abstract
Industrial High-Power/High-Brightness Direct Diode Laser (DDL) are rapidly evolving as one of the preferred laser technologies for metal processing with several benefits such as higher processing speeds, superior applications quality and wall plug efficiencies higher than 40%. This paper focuses on the recent advances applying Wavelength Beam Combining (WBC) technology to diode bars emitting in the 400nm region to demonstrate the power scalability with beam qualities only archivable using WBC technology. Also, will talk about the 6kW/100um laser in the 975nm region using the Fast-Beam-Shaper (FBS) capable of dynamically and continuously changing the shape of the beam in a couple of milliseconds to shape-modulate the output beam to closely match the application requirements. We will also show an approach for a 6kW/50um extended broadband laser in the 875-1000nm spectral region that doubles the brightness capabilities of DDL and enhance the metal processing quality.
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Francisco Villarreal, Wang Zhou, John Roethle, Matthew Sauter, Keita Inoue, Bryan Lochman, and Bien Chann "Advances in blue and near-IR high-power/high-brightness direct diode lasers using wavelength beam combining (Conference Presentation)", Proc. SPIE 11262, High-Power Diode Laser Technology XVIII, 112620U (9 March 2020); https://doi.org/10.1117/12.2544435
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KEYWORDS
Semiconductor lasers
Mid-IR
Beam shaping
Metals
Diodes
Laser applications
Laser processing
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