Steady optical beam propagating through turbulent environment

Kang, Xing; Yang, Xiuting; Ma, Jijie; Ren, Yafei; Liang, Xinli; Wang, Huahua; Liu, Yang; Ming, Zhizi; Du, Haoran; Zhong, Xinglin; Chen, Zhigang; Gao, Lu; Zhang, Ze

doi:10.1364/oe.452190

Cited by 5 publications

(1 citation statement)

References 35 publications

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“…These aberrations greatly reduce the resolution and depth of focus (DOF) of the images [1][2][3]. The prospect of achieving a steady optical beam (STOB) that can robustly propagate in turbulence is a long-term goal [4,5]. Gaussian beams, generated by the laser, are limited by diffraction effects.…”

Section: Introductionmentioning

confidence: 99%

Robust propagation of a steady optical beam through turbulence with extended depth of focus based on spatial light modulator

2023

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Finding appropriate strategies to increase the robustness to turbulence with extended depth of focus (DOF) is the common requirement in developing high-resolution imaging through air or water medium. However, the conventional lens with a specially designed structure requires high manufacturing costs and is limited by the lack of dynamic modulation characteristics. Spatial light modulator (SLM), the unique flat-panel optical device, can break through the distance limitation of beam propagation for the dynamic modulation property. In this work, we address the dynamic generation of the steady optical beam (STOB) based on the mechanism of transverse wave vector elimination. STOB generated by the SLM has significant advantages over Gaussian beams for the characteristics of peak intensity, robust propagation, extended-DOF beam profile, and dynamic wavefront modulation over a long distance under strong turbulent media. Our versatile, extensible, and flexible method has promising application scenarios for the realization of turbulence-resistant circumstances.

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Section: Introductionmentioning

confidence: 99%

Robust propagation of a steady optical beam through turbulence with extended depth of focus based on spatial light modulator

2023

Self Cite

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Hyper‐Sampling Imaging by Measurement of Intra‐Pixel Quantum Efficiency Using Steady Wave Field

Xue,

Shang,

Zhang

et al. 2024

Laser & Photonics Reviews

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The transition from optical film to digital image sensors (DIS) in imaging systems has brought great convenience to human life. However, the sampling resolution of DIS is considerably lower than that of optical film due to the limitation that the pixels are significantly larger than the silver halide molecules. How to break DIS's sampling limit and achieve high‐resolution imaging is highly desired for imaging applications. In the research, a novel mechanism that allows for a significant reduction in the smallest sampling unit of DIS to as small as 1/16th of a pixel, or even smaller, through measuring the intra‐pixel quantum efficiency for the first time and recomputing the image — a technique referred to as hyper‐sampling imaging (HSI) is developed. Employing the HSI method, the physical sampling resolution of regular DIS can be enhanced by 4 × 4 times or potentially higher, and detailed object information can be acquired. The HSI method has undergone rigorous testing in real‐world imaging scenarios, demonstrating its robustness and efficiency in overcoming the sampling constraints of conventional DIS. This advancement is particularly beneficial for applications such as remote sensing, long‐range reconnaissance, and astronomical observations, where the ability to capture fine details is paramount.

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