Study of airflow regime upon optic inside frequency multiplying device and achievement of cleaning technique

Hu, Shuo; Shang, Qiqi; Zhang, Peng; Chen, Jiaxuan; Zhang, Fanglei; Miao, Xinxiang

doi:10.1016/j.ijleo.2021.166777

Cited by 3 publications

(1 citation statement)

References 31 publications

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“…Additionally, cleaning dust collectors still requires offline labor. An alternative would be to use gas knives [23,24] with airflow tails connected to the flow tunnel. In this case, invasive aerosols will depart with the background flow smoothly.…”

Section: Introductionmentioning

confidence: 99%

Low-speed gas knife protection for the large aperture optical component in high-power laser systems

Gao

Dong

et al. 2023

Front. Phys.

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In high-power laser systems, fused silica aerosols produced by laser-induced damage to optical components impede further improvement in operation efficiency. To mitigate aerosol threats, low-speed gas knives are an attractive online option. Herein, we investigate the protective mechanism of a low-speed gas knife (<20 m/s) against aerosol invasion on the optical component. First, aerosol particles invaded the surface experimentally in two ways and were detected both in the core and non-core regions, depending on the coverage area of the protection flow. Particle sedimentation percentages can directly reflect the protection capability of the gas knife flow. Since a “midstream defect” is readily apparent, a CFD model was developed to explain the phenomenon from the perspective of velocity distribution. Additionally, the Euler-Lagrange method was used to track airflow particle motions and reappear the protective process. The numerical and experimental results on protection efficiency are closely correlated. The numerical calculation indicates that the “midstream defect” manifested in the core region is possibly attributed to the turbulent dispersion and anisotropic near-wall effects of particles of various diameters, while in the non-core region, the mechanism differs. This work provides a framework for airflow clean designs inside high-power laser systems.

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Section: Introductionmentioning

confidence: 99%

Low-speed gas knife protection for the large aperture optical component in high-power laser systems

Gao

Dong

et al. 2023

Front. Phys.

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Fate of ejected debris from the explosion of the rear surface of fused silica in the high-power laser facility

Gao

Liang

et al. 2023

International Journal of Optomechatronics

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Innovative Approaches to Large-Area Perovskite Solar Cell Fabrication Using Slit Coating

Wang,

Cheng,

et al. 2024

Molecules

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Perovskite solar cells (PSCs) are gaining prominence in the photovoltaic industry due to their exceptional photoelectric performance and low manufacturing costs, achieving a significant power conversion efficiency of 26.4%, which closely rivals that of silicon solar cells. Despite substantial advancements, the effective area of high-efficiency PSCs is typically limited to about 0.1 cm2 in laboratory settings, with efficiency decreasing as the area increases. The limitation poses a major obstacle to commercialization, as large-area, high-quality perovskite films are crucial for commercial applications. This paper reviews current techniques for producing large-area perovskites, focusing on slot-die coating, a method that has attracted attention for its revolutionary potential in PSC manufacturing. Slot-die coating allows for precise control over film thickness and is compatible with roll-to-roll systems, making it suitable for large-scale applications. The paper systematically outlines the characteristics of slot-die coating, along with its advantages and disadvantages in commercial applications, suggests corresponding optimization strategies, and discusses future development directions to enhance the scalability and efficiency of PSCs, paving the way for broader commercial deployment.

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Study of airflow regime upon optic inside frequency multiplying device and achievement of cleaning technique

Cited by 3 publications

References 31 publications

Low-speed gas knife protection for the large aperture optical component in high-power laser systems

Low-speed gas knife protection for the large aperture optical component in high-power laser systems

Fate of ejected debris from the explosion of the rear surface of fused silica in the high-power laser facility

Innovative Approaches to Large-Area Perovskite Solar Cell Fabrication Using Slit Coating

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