Design and fabrication of a liquid crystal retarder for the mid-and far-infrared wavelength ranges

M Sakamoto, K Kawamura, M Suzuki, K Noda… - Optical Materials …, 2024 - opg.optica.org
We designed and fabricated a liquid crystal (LC) retarder that operates within mid-infrared
(MIR) and far-infrared (FIR) wavelength regions. Fluorine-based mixed LCs and BaF_2 …

Design and fabrication of a liquid crystal polarization grating for mid-and far-infrared wavelengths

M Sakamoto, S Ohara, Y Mitsuboshi, K Noda… - Applied Optics, 2024 - opg.optica.org
A lot of research on liquid crystal polarization gratings (LCPGs) that can separate circularly
polarized light with 100% diffraction efficiency has been conducted in the visible and near …

Establishment and verification of formulas of target tracking based on dual liquid crystal polarization gratings

J Wang, L Gao, L Jiang, Y Liu, Y Dong, Y Song - Optics Express, 2022 - opg.optica.org
In this paper, the relationship between miss distance, target position, and rotation angle of
dual liquid crystal polarization gratings (LCPGs) is proposed for the first time, a target …

Design of two-dimensional multilevel optical anisotropic diffraction gratings with a generative adversarial network

H Okamoto, T Kozai, A Imawan, K Noda… - Applied Optics, 2024 - opg.optica.org
This study uses a generative adversarial network to design multilevel optical anisotropic
diffraction gratings with specific customizable characteristics. As input, this method uses the …

Research on laser target dynamic tracking system with rotating polarization grating

W Wang, Y Dong, H Jiang, T Wang, J Song, Y Liu… - Optics …, 2023 - opg.optica.org
A micromechanical target tracking system based on polarization grating (PG) is designed to
meet the conformal design of laser communication systems and to realize the lightweight …

Angle amplifier in a 2D beam scanning system based on peristrophic multiplexed volume Bragg gratings

Y Dong, Y Jin, F Kong, J Zhao, J Mo, D He… - High Power Laser …, 2023 - cambridge.org
In this paper, a 2D angle amplifier based on peristrophic multiplexed volume Bragg gratings
is designed and prepared, in which a calculation method is firstly proposed to optimize the …

[PDF][PDF] 液晶相控阵器件色散特性分析

刘壮, 王启东, 史浩东, 成丽波 - ACTA PHOTONICA SINICA, 2022 - researching.cn
相控阵器件具有色散的作用, 而激光器中心波长通常会产生一定漂移, 也具有一定光谱宽度,
导致大角度偏转情况下, 激光光束位置与光功率分布发生改变. 针对这一问题 …

[PDF][PDF] 正交级联液晶偏振光栅角度偏转模型

刘壮, 王启东, 王超, 史浩东 - 光子学报, 2021 - researching.cn
目前正交级联液晶偏振光栅使用过程中的偏转角度均被认为是其角分辨率的整数倍,
实际使用过程中, 正交级联液晶偏振光栅的偏转角度与设计角度存在一定偏差. 针对该问题 …

Effects of optically biaxial anisotropy in orthogonal-circular polarization gratings operating in the Raman–Nath to Bragg regimes

R Momosaki, M Sakamoto, K Noda, T Sasaki, T Sakai… - JOSA B, 2021 - opg.optica.org
The incident angle dependences of the diffraction properties of orthogonal-circular
polarization gratings (OCPGs) fabricated using a polymer liquid crystal exhibiting biaxial …

Optimal Control of Passive Cascaded Liquid Crystal Polarization Gratings

H Qin, Z Liu, Q Wang, Q Fu - Applied Sciences, 2023 - mdpi.com
The incidence angle of a beam entering a liquid crystal variable retarder (LCVR) and the
liquid crystal polarization grating (LCPG) is greater when the LCPG is utilized in the …