Author(s): Dong, ZY (Dong, Zhiyong); Lin, GY (Lin, Guyi); Zhao, PF (Zhao, Pengfei); Lin, XC (Lin, Xuechun)
Source: APPLIED OPTICS Volume: 59 Issue: 8 Pages: 2319-2324 DOI: 10.1364/AO.382484 Published: MAR 10 2020
Abstract: We designed and simulated a diode laser with output power of more than 10 kW and a line shape beam spot of approximately 14 - 58 mm x 1.6 mm (1/e(2) width). The diode laser was assembled with high fill factor diode laser bars that can be cooled with filtered tap water. The diode laser bar was beam shaped with a tilted cylindrical lens array to twist the slow axis of individual emitters by 90 deg, and then the slow axis was collimated with a single cylindrical lens. From the simulation, 20 laser diode bars with the same wavelength formed a diode laser optical stack with an output power of more than 3.5 kW, a beam spot of 31 mm x 12 mm size, and full divergence angles of around 6 mrad in both the horizontal and vertical directions. Then, three laser diode optical stacks with different wavelengths were wavelength-multiplexed to obtain an output power of more than 10 kW. Finally, the diode laser optical stack was transformed by simple cylindrical lenses to forma line shape spot with a working distance longer than 250 mm. Our diode laser design is much simpler than previous devices with similar output power and can find various applications such as high-speed laser cladding. (C) 2020 Optical Society of America
Accession Number: WOS:000526528200015
PubMed ID: 32225785
Author Identifiers:
AuthorWeb of Science ResearcherIDORCID Number
zhao, peng fei 0000-0003-1987-3488
ISSN: 1559-128X
eISSN: 2155-3165
Full Text: https://www.osapublishing.org/ao/abstract.cfm?uri=ao-59-8-2319