Influence of positioning errors of optical shaping components for single emitter laser diode on beam shaping effects

Yan, Yixiong; Zheng, Yu; Duan, Ji’an

doi:10.1007/s11771-019-4215-3

Cited by 12 publications

(2 citation statements)

References 10 publications

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“…The rotation misalignment has the least effect [26]. Yan et al showed that a 1.5 mm linear misalignment in the converging lens's Z-axis direction would reduce the beam spot roundness by 50% [27]. To reduce the influence of the converging lens's misalignment, Fadhali et al designed a new type of converging lens set to achieve a high coupling efficiency of the laser even when there is a 1-4 mm misalignment [28].…”

Section: Effect Of Various Optical Components With Different Misalignmentmentioning

confidence: 99%

Review of Issues and Solutions in High-Power Semiconductor Laser Packaging Technology

Yan

Zheng

Sun³

et al. 2021

Front. Phys.

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In the past 20 years, semiconductor lasers have been widely used in medical, industrial, and communication applications, providing a revolutionary and powerful platform for the fifth generation and advanced manufacturing. Semiconductor laser has the advantages of small size, lightweight, high reliability and easy modulation, becoming increasingly popular. However, due to the laser diode emission mechanism limitation, the beam quality is inferior and cannot be directly applied and required to be handled by beam shaping. However, the packaging of multiple beam shaping optical components is accompanied by risks due to misalignment. The misalignment error of the optical components has a great hidden danger to the laser performance. As semiconductor lasers' power gradually increases, lasers' thermal management technology is also increasingly strict. Therefore, this article first reviews the beam shaping technology of semiconductor laser diode array. Secondly, the analysis of the influence of the array semiconductor laser optical device's misalignment is reviewed, and a feasible solution is proposed. Finally, it summarizes the researches on thermal management in high-power semiconductor lasers. This article aims to give readers a comprehensive and broad understanding of semiconductor laser packaging's technical difficulties and to recognize each corresponding solution.

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Section: Effect Of Various Optical Components With Different Misalignmentmentioning

confidence: 99%

Review of Issues and Solutions in High-Power Semiconductor Laser Packaging Technology

Yan

Zheng

Sun³

et al. 2021

Front. Phys.

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“…In 2016, Xiong et al proposed a design method for a slow-axis collimated lens with a variable radius of curvature of a semiconductor laser bar based on Snell’s law and phase constancy in front of the optical field and achieved a divergence angle of 6 mrad for a slow-axis collimated beam [ 12 ]. In 2019, Yan et al analyzed the relationship between the positional error of each original element in high-power semiconductor lasers and the beam-forming effect, providing theoretical guidance for the packaging of high-power lasers [ 13 ]. Yu et al designed a simple beam-shaping system utilizing trapezoidal prisms and a set of parallelogram plates to improve beam symmetry and reduce linewidth, achieving high-performance results with an output power of 272 W and a luminous efficiency of 85% [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Power Enhancement and Spot Homogenization Design for Arrayed Semiconductor Lasers

Zhong,

Xiong,

et al. 2024

Micromachines

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Improving the spot brightness and uniformity of arrangement of the array laser is conducive to ensuring the beam quality of the fiber laser. Based on the light tracing principle, the optical model performance of two common fiber lasers was first analyzed. Then, a novel rotationally polarized optical model with high power and spot uniformity was designed and optimized on the basis of the aforementioned analysis. The results of the evaluation metrics of the multi-indicator optical model show that the spot uniformity of our proposed model improved by 24.03%, the power improved by 0.55%, and the maximum light distance was shortened from 120 mm to 82.58 mm. Further, the results of the coupling tolerance analysis of the optical elements show that the total coupling efficiency was 89.04%. The coupling power and tolerance relationships did not produce degradation compared with the traditional model. Extensive comparative results show that the designed rotationally polarized optical path model can effectively improve the optical coupling efficiency and spot uniformity of arrayed semiconductor lasers.

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Asymmetric convolutional multi-level attention network for micro-lens segmentation

Zhong,

Zhou,

Yan

et al. 2024

Engineering Applications of Artificial Intelligence

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Influence of positioning errors of optical shaping components for single emitter laser diode on beam shaping effects

Cited by 12 publications

References 10 publications

Review of Issues and Solutions in High-Power Semiconductor Laser Packaging Technology

Review of Issues and Solutions in High-Power Semiconductor Laser Packaging Technology

Power Enhancement and Spot Homogenization Design for Arrayed Semiconductor Lasers

Asymmetric convolutional multi-level attention network for micro-lens segmentation

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