Doublet-waveplate polarization transceiver system for backscattering suppression in laser communication terminal

Wang, Jing; Jingjing, Xue; Qu, Enshi; Ren, Liyong

doi:10.1016/j.optcom.2020.125621

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…Lasers are widely used in diverse applications such as optical communication, [1,2] remote sensing, [3] biomedicine, [4] high energy density physics, [5] and directed energy. [6,7] Many of these applications require waveplates or optical retarders; however, such devices often lack the ability to withstand intense laser irradiation.…”

Section: Introductionmentioning

confidence: 99%

Investigating the Trade‐off between Optical and Mechanical Properties during Constrained Sintering of Mesomorphic Ceramic Films

Cheng

Zhang

Chen

et al. 2023

Advanced Optical Materials

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Robust, transparent, and birefringent inorganic films are demanded for polarization control of high‐power lasers. While single crystals or films obtained via glancing angle deposition exhibit desirable optical properties and laser damage resistance, these methods are limited by cost and scalability. Mesomorphic ceramics as inorganic solids with liquid crystalline superstructure offer appealing transparency and birefringence but lack mechanical robustness due to their high porosity. Here, the effect of sintering on optical and mechanical properties of mesomorphic ceramics is evaluated. Films prepared by blade coating are sintered under varying conditions. Constrained sintering accomplished crystallite growth, densification, and morphological changes including necking as well as cracking while preserving the crystallographic orientation. The extent of sintering as a function of thermal treatment is quantified by morphology, surface area loss, and crystallite growth. Moreover, activation energies for surface diffusion and grain growth are estimated by surface area analysis and X‐ray diffraction peak narrowing, respectively. After sintering, birefringence decreases while Young's modulus and hardness improve as the film densifies. Upon partial sintering, mesomorphic ceramics retain transparency, high birefringence, and enhanced modulus. Laser‐induced damage threshold is measured as well. The reported results represent an important step toward the assembly and sintering of robust waveplates with high laser damage resistance.

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Section: Introductionmentioning

confidence: 99%

Investigating the Trade‐off between Optical and Mechanical Properties during Constrained Sintering of Mesomorphic Ceramic Films

Cheng

Zhang

Chen

et al. 2023

Advanced Optical Materials

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Polarization characteristic analysis of orthogonal reflectors with a side-scanning galvanometer in a laser communication terminal system

et al. 2020

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An alignment tolerance allocation and alignment method of orthogonal reflectors with high polarization-maintaining characteristics is presented. A geometric optics vector model of orthogonal reflectors is established to derive the propagation vector of the output beam, including pitch angle error of the first mirror, the side-scanning angle of the galvanometer, and rotation angle error of the secondary mirror. The polarization transmission matrix of the orthogonal reflectors is derived based on the 3D polarization ray-tracing algorithm to present the relationship between assembly errors and diattenuation or retardance of the orthogonal reflectors. A calculation example of certain polarization ellipticity error is given to quantitatively distribute the orthogonal mirror assembly error. The optimal side-sway angle selection method of the galvanometer side-sway angle in a laser communication system is presented; further, effective measures to minimize the polarization ellipticity error is put forward.

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Doublet-waveplate polarization transceiver system for backscattering suppression in laser communication terminal

Cited by 2 publications

References 5 publications

Investigating the Trade‐off between Optical and Mechanical Properties during Constrained Sintering of Mesomorphic Ceramic Films

Investigating the Trade‐off between Optical and Mechanical Properties during Constrained Sintering of Mesomorphic Ceramic Films

Polarization characteristic analysis of orthogonal reflectors with a side-scanning galvanometer in a laser communication terminal system

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