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10 May 2023 Analysis of the influence of optical phased array element duty cycle on beam control quality
Shuai Wang, Lihua Kang, Kekun Zhu
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Proceedings Volume 12554, AOPC 2022: Advanced Laser Technology and Applications; 1255419 (2023) https://doi.org/10.1117/12.2649143
Event: Applied Optics and Photonics China 2022 (AOPC2022), 2022, Beijing, China
Abstract
Optical phased array is a method of beam control by controlling the wavefront distribution of the beam. It has the characteristics of all-solid state, low power consumption and no inertia. The realization of multi-beam control in free-space optical communication through optical phased array has obvious advantages in energy consumption and control accuracy. The optical phased array modulates the phase directly on the beam ideally, but in fact the optical phased array device parameters obviously have an effect on the complex amplitude of the beam. In this paper, the modeling of the optical phased array device is realized, and the influence of the duty cycle of the optical phased array element on the efficiency and efficiency of the multi-beam control is analyzed. The experimental results show that the optical phase control controls the energy of the multi-beam pointing. The efficiency gradually increased from 0.23 to 0.88 when the fill factor increased from 50% to 100%, and the control accuracy of the optical phase control to control the multi-beam pointing did not significantly correlate with the fill factor. The experimental results have a certain reference for the application of optical phased array in multi-beam control.
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Shuai Wang, Lihua Kang, and Kekun Zhu "Analysis of the influence of optical phased array element duty cycle on beam control quality", Proc. SPIE 12554, AOPC 2022: Advanced Laser Technology and Applications, 1255419 (10 May 2023); https://doi.org/10.1117/12.2649143
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KEYWORDS
Phased array optics
Modulation
Beam controllers
Phased arrays
Liquid crystals
Laser communications
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