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[IEEE 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Munich, Germany (2019.6.23-2019.6.27)] 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Computational Modelling of Metasurfaces for Strongly Divergent Beams
摘要： The content of the paper discusses the computational modelling of metasurfaces for strongly divergent beams, focusing on the design and application of metasurfaces with building blocks that can efficiently control light beams with high divergence. It highlights the potential of these metasurfaces in various applications, including optical tweezers, laser beam shaping, and imaging systems. The paper also explores the challenges and limitations in designing such metasurfaces, particularly in achieving high efficiency over a broad range of angles and wavelengths.
关键词： imaging systems,computational modelling,metasurfaces,optical tweezers,divergent beams,laser beam shaping
更新于2025-09-11 14:15:04
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Conceptual design of a high-efficiency heat transfer circular-conical-frustum laser amplifier with amplified divergent beams
摘要： Two problems exist in the repetition rate laser system with the cylindrical laser amplifier–its inability to offer the gain required for the injected seed in the low-energy stage of the laser system, and its failure to achieve efficient heat dissipation under high gain and high repetition rate. This paper proposes a new conceptual design of a laser amplifier with a circular-conical-frustum gain medium and corresponding configuration scheme for energy storage. Under the influence of its higher field synergy, the capacity of heat dissipation possessed by the system with a frustum gain medium can be increased by 10–25% and the average temperature at the steady state can be reduced by 2–4°C. With the amplified spherical wave, the energy extraction efficiency can be improved by 5% in the low-gain state and 15% in the high-gain state, and it can be further increased by 20% under the new configuration scheme of energy storage. Thus, it can be concluded that this new configuration of laser amplifier is more suitable than cylindrical amplifier and plays an important role in miniaturizing the laser system at high repetition rate.
关键词： Divergent Beams,Field synergy,Extraction efficiency,Circular-conical-frustum,Heat transfer
更新于2025-09-11 14:15:04