通过诱导空间啁啾增强瓦片孔径相干光束组合的桶内功率

IF 3.8 2区物理与天体物理 Q2 PHYSICS, APPLIED

Physical Review Applied Pub Date : 2024-08-07 DOI:10.1103/physrevapplied.22.024018

Wenhai Liang, Shuman Du, Renjing Chen, Chengru Wu, Xiong Shen, Peng Wang, Jun Liu, Ruxin Li

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引用次数: 0

摘要

采用基于平铺孔径的相干波束合成（TACBC）技术的高峰值功率激光器中，子波束之间的空间间隙会产生相对较强的挎边，从而损害远场的斗内功率（PIB）。为了解决上述问题，本文采用了空间啁啾来填补空白，进一步提高 PIB。模拟和实验都表明，在两个子光束中，当间隙-光束宽度比为 0.2 时，空间啁啾能将 PIB 提高 1.8 倍。即使考虑四个子光束，在模拟中也能观察到相同的增强效果。简而言之，空间啁啾辅助 TACBC 方法有望在建造数十到数百 petawatt (PW) 激光器时提高焦点强度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Power-in-bucket enhancement in tiled-aperture coherent beam combining through inducing spatial chirp

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Power-in-bucket enhancement in tiled-aperture coherent beam combining through inducing spatial chirp

Spatial gaps between sub-beams in high-peak-power lasers with tiled-aperture-based coherent beam combining (TACBC) give rise to relatively strong sidelobes and impair the power in bucket (PIB) at far field. To address the aforementioned issue, spatial chirp is employed in this paper to fill the gaps and further enhance PIB. With two sub-beams, both simulations and experiments indicate that spatial chirp can boost PIB by 1.8 times at a gap-beam width ratio of 0.2. The same enhancement is observed in simulations even when four sub-beams are considered. To put it briefly, the spatial-chirp-assisted TACBC approach holds the potential in boosting focal intensity during constructing tens to hundreds of petawatt (PW) lasers.

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来源期刊

Physical Review Applied PHYSICS, APPLIED-

CiteScore

7.80

自引率

8.70%

发文量

760

审稿时长

2.5 months

期刊介绍： Physical Review Applied (PRApplied) publishes high-quality papers that bridge the gap between engineering and physics, and between current and future technologies. PRApplied welcomes papers from both the engineering and physics communities, in academia and industry. PRApplied focuses on topics including: Biophysics, bioelectronics, and biomedical engineering, Device physics, Electronics, Technology to harvest, store, and transmit energy, focusing on renewable energy technologies, Geophysics and space science, Industrial physics, Magnetism and spintronics, Metamaterials, Microfluidics, Nonlinear dynamics and pattern formation in natural or manufactured systems, Nanoscience and nanotechnology, Optics, optoelectronics, photonics, and photonic devices, Quantum information processing, both algorithms and hardware, Soft matter physics, including granular and complex fluids and active matter.