Research on the Deflection Characteristics of Non-Mechanical Beams of Liquid Crystal Variable Retarder Cascade Polarization Gratings

IF 2.1 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Journal Pub Date : 2024-10-11 DOI:10.1109/JPHOT.2024.3476165

Qvan Han Wang;Shuai Chang;Peng Lin;Wei Zhao;Ye Gu;Xiao Nan Yu

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Abstract

According to the research status of fast beam pointing and scanning in space laser communication, this paper proposes a beam deflection method that cascades liquid crystal tunable phase retarder with polarization grating, and realizes fast beam scanning and pointing according to the polarization and diffraction characteristics of light and analyzes the relationship between voltage and delay, the voltage regulation accuracy is 0.001 V, and whether the spot intensity can be used in space laser communication is verified, and the fast pointing of four spots of ±6° and ±2° is realized. The pointing accuracy is 30.49 μrad, the beam divergence angle is about 0.0339°, and it is connected to the blazed grating, and the single beam is scanned at 4.062° and 16.06° by wavelength tuning from 1525 nm to 1600 nm, with a wavelength tuning accuracy of 0.01 nm and repeated positioning accuracy of about 0.01°, which has certain research significance for the miniaturization and lightweight design of space laser communication optical transceiver and lidar.

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液晶变缓速级联偏振光栅非机械光束偏转特性研究

根据空间激光通信中快速光束指向与扫描的研究现状，提出了一种将液晶可调谐相位缓速器与偏振光栅级联的光束偏转方法，根据光的偏振和衍射特性，分析了电压与延时的关系，实现了光束的快速扫描与指向，稳压精度为0.001 V；验证了光斑强度是否可用于空间激光通信，实现了±6°和±2°四个光斑的快速指向。瞄准精度为30.49 μrad，光束发散角约为0.0339°，与燃烧光栅相连，通过1525 ~ 1600 nm波长调谐，在4.062°和16.06°处对单光束进行扫描，波长调谐精度为0.01 nm，重复定位精度约为0.01°，对空间激光通信光收发器和激光雷达的小型化、轻量化设计具有一定的研究意义。

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来源期刊

IEEE Photonics Journal ENGINEERING, ELECTRICAL & ELECTRONIC-OPTICS

CiteScore

4.50

自引率

8.30%

发文量

489

审稿时长

1.4 months

期刊介绍： Breakthroughs in the generation of light and in its control and utilization have given rise to the field of Photonics, a rapidly expanding area of science and technology with major technological and economic impact. Photonics integrates quantum electronics and optics to accelerate progress in the generation of novel photon sources and in their utilization in emerging applications at the micro and nano scales spanning from the far-infrared/THz to the x-ray region of the electromagnetic spectrum. IEEE Photonics Journal is an online-only journal dedicated to the rapid disclosure of top-quality peer-reviewed research at the forefront of all areas of photonics. Contributions addressing issues ranging from fundamental understanding to emerging technologies and applications are within the scope of the Journal. The Journal includes topics in: Photon sources from far infrared to X-rays, Photonics materials and engineered photonic structures, Integrated optics and optoelectronic, Ultrafast, attosecond, high field and short wavelength photonics, Biophotonics, including DNA photonics, Nanophotonics, Magnetophotonics, Fundamentals of light propagation and interaction; nonlinear effects, Optical data storage, Fiber optics and optical communications devices, systems, and technologies, Micro Opto Electro Mechanical Systems (MOEMS), Microwave photonics, Optical Sensors.