Spectral Beam Combining With Beam Shaping of Distributed 2D Multi-Single Emitters Laser Diode Array

In this letter, a new strategy is demonstrated by a distributed 2D multi-single emitters (MSE) laser diode array based on spectral beam combining (SBC) and beam shaping system (BSS). For the MSE-SBC, the maximum O-O efficiency is 83.82%, which leads to an output power of 86.5 W and the spectral span...

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Bibliographic Details
Published in:IEEE photonics technology letters 2024-06, Vol.36 (11), p.693-696
Main Authors: Hu, Man, Zhang, Weiqiao, Cao, Peng, Li, Tongtong, Zhou, Xuyan, Zheng, Wanhua
Format: Article
Language:English
Subjects:
beam quality
beam shaping
Brightness
Continuous radiation
Diode lasers
Emitters
fiber coupling
Fiber lasers
Laser arrays
Laser beams
Laser diode
Lenses
Optical polarization
Power generation
Semiconductor lasers
spectral beam combining
Spectral emittance
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Summary:In this letter, a new strategy is demonstrated by a distributed 2D multi-single emitters (MSE) laser diode array based on spectral beam combining (SBC) and beam shaping system (BSS). For the MSE-SBC, the maximum O-O efficiency is 83.82%, which leads to an output power of 86.5 W and the spectral span is 4.64 nm under continuous wave operation at a current of 8 A. M2 of 2.96\times 12.99 in vertical and horizontal directions are obtained at 8 A after the BSS, which can be coupled into a 105~\mu \text{m} , 0.22 NA fiber efficiently. Such technology is perspective to achieve high brightness and efficiency of laser diode fiber coupling.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2024.3392668