{"title":"Application research of polarization imaging technology in inhomogeneous media/material: A review","authors":"Weifeng Kong, Guanying Huo","doi":"10.1016/j.optlaseng.2025.109113","DOIUrl":"10.1016/j.optlaseng.2025.109113","url":null,"abstract":"<div><div>Light scattering in inhomogeneous media/material, such as fog, turbid water and biological tissues, severely limits the imaging quality and resolution of traditional imaging techniques. Polarization imaging technology uses the polarization characteristics of light to effectively suppress scattered light and enhance the target signal, thus improving the imaging quality. At present, there are many research achievements focus on polarization imaging technology, but there is a lack of systematic and comprehensive review. In this paper, the recent progress of polarization imaging in inhomogeneous media/material is reviewed and analyzed. Firstly, we introduce the fundamental theory of polarization imaging, covering the acquisition of polarization parameters and the concept of the Mueller matrix. Next, we detail the primary application areas, including image defogging enhancement, medical imaging diagnosis, remote sensing object classification, and industrial vision inspection. Subsequently, we analyze and compare the advantages and limitations of existing methods, along with their specific application scopes. Finally, we discuss the challenges and prospective developments in polarization imaging, offering insights for researchers, particularly in hardware optimization, imaging technique integration, the fusion of deep learning with physical models, and the acceleration of quantum computing.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"194 ","pages":"Article 109113"},"PeriodicalIF":3.5,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144223262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yujia Liu , Chiu-Wing Sham , Fuqi Zhang , Hui Zhao , Longyu Ma
{"title":"Visually meaningful asymmetric image encryption based on a random devil's vortex phase mask in the gyrator transform domain","authors":"Yujia Liu , Chiu-Wing Sham , Fuqi Zhang , Hui Zhao , Longyu Ma","doi":"10.1016/j.optlaseng.2025.109121","DOIUrl":"10.1016/j.optlaseng.2025.109121","url":null,"abstract":"<div><div>Traditional image encryption methods usually generate noisy ciphertext images, which are vulnerable to targeted analysis by attackers, thus exposing the existence of encrypted information. To solve this problem, this study proposes a visually meaningful asymmetric image encryption method based on the rotation transform domain and random devil’s vortex phase mask (<em>RDVPM</em>). The proposed method constructs <em>RDVPM</em> using devil lens function, Fresnel zone plate phase function and vortex phase function, and uses it as the public key of the encryption system. In addition, using visually meaningful images, amplitude and phase truncation techniques are used in the gyrator transform domain to construct an asymmetric encryption system to generate a specific Private key source, effectively improving the efficiency of encryption and decryption while ensuring that the system has a high degree of security. The visually meaningful image is a completely natural image that does not contain the original image information, which effectively improves the security of the encryption system. Numerical simulation results show that under the conditions of multiple test images, the proposed algorithm has high system parameter sensitivity and key sensitivity, and has good statistical characteristics. It has good robustness and security under Gaussian noise, speckle noise and salt and pepper noise attacks, occlusion attacks, chosen plaintext attacks and specific attack conditions. The proposed optical asymmetric encryption method provides a new idea for fast and secure visually meaningful image encryption.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"194 ","pages":"Article 109121"},"PeriodicalIF":3.5,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144223259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Triple-subdivision vortex beam interferometer for precision displacement measurement","authors":"Boyang Zhang , Ji Liu , Jinhui Wu","doi":"10.1016/j.optlaseng.2025.109128","DOIUrl":"10.1016/j.optlaseng.2025.109128","url":null,"abstract":"<div><div>This paper presents a novel triple-subdivision vortex beam interferometer (TSVBI) for precision displacement measurement. Vortex beam interferometry, known for its ability to convert phase variations into rotational motion, has demonstrated significant potential in this field. However, traditional systems exhibit limited sensitivity in practical implementations. By applying advanced polarization control and a multiple-reflection optical configuration, the TSVBI system achieves a triple sensitivity enhancement compared to conventional methods. This technique offers an effective solution to overcome the physical constraints of system hardware, demonstrating promising applications in precision metrology and optical sensing.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"194 ","pages":"Article 109128"},"PeriodicalIF":3.5,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144223260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Fourier transform ghost imaging with complexity-guided phase retrieval","authors":"Manisha , Amit Yadav , Muskan Kularia , Kedar Khare , Rakesh Kumar Singh","doi":"10.1016/j.optlaseng.2025.109110","DOIUrl":"10.1016/j.optlaseng.2025.109110","url":null,"abstract":"<div><div>The ghost imaging (GI) scheme uses the statistical correlation between the intensities of the reference light field illuminating the object and the intensity emerging after interaction with the object. However, phase information is lost in the intensity correlation function due to the inherent property of the fourth-order correlation. Here, we propose and experimentally demonstrate a new Fourier transform ghost imaging (FTGI) technique. To address the phase loss issue, we have successfully implemented a phase retrieval iterative algorithm that utilizes a complexity-guided relaxed averaged alternating reflections (CG-RAAR) algorithm. This technique is robust against noise in the intensity correlation function used for phase reconstruction, ensuring faithful reconstruction results in the FTGI. The experimental realization of the FTGI is carried out using single-exposure speckle patterns and measuring the spatial intensity correlation of two speckle patterns. The two speckle patterns are recorded with and without the object, and the intensity correlation is assisted by the CG-RAAR algorithm for phase recovery. The experimental recordings and reconstruction results are presented for four objects with uniform and varying phase features.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"194 ","pages":"Article 109110"},"PeriodicalIF":3.5,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144212619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Quanchun Yu, He Cai, Xianli Zhu, Hongcheng Yin, Liangsheng Li
{"title":"Diffusion laser tomography using a photon round-trip propagator","authors":"Quanchun Yu, He Cai, Xianli Zhu, Hongcheng Yin, Liangsheng Li","doi":"10.1016/j.optlaseng.2025.109126","DOIUrl":"10.1016/j.optlaseng.2025.109126","url":null,"abstract":"<div><div>Effective imaging in unknown volumetric scattering media presents significant challenges, particularly in fields such as underwater imaging and remote sensing. Here, we propose a practical method utilizing deconvolution with a photon round-trip propagator derived from the diffusion equation to image objects deeply submerged in turbid water. Using a single-photon camera and a low-power laser, we experimentally demonstrate depth tomography imaging of objects submerged in highly turbid water at 10 attenuation lengths without prior information. Our method is non-invasive and features self-extraction of parameters, offering practicality and broad applicability, with notable potential in underwater imaging and remote sensing.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"194 ","pages":"Article 109126"},"PeriodicalIF":3.5,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144212620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhibo Geng , Guangxu Zhu , Min Chen , Zhonglai Wang , Tianjiao Zeng
{"title":"Real-time rendering of coastal waters simulation based on water optical properties","authors":"Zhibo Geng , Guangxu Zhu , Min Chen , Zhonglai Wang , Tianjiao Zeng","doi":"10.1016/j.optlaseng.2025.109093","DOIUrl":"10.1016/j.optlaseng.2025.109093","url":null,"abstract":"<div><div>With the development of visual simulation technology in recent years, digital ocean simulation has garnered significant attention. However, current water simulation methods predominantly focus on ocean surface wave and light effects, with limited consideration of the complex water quality and optical properties inherent to nearshore waters. This paper introduces a comprehensive real-time rendering method for coastal waters, grounded in the optical properties of water bodies. By analyzing the formation mechanism of water color and integrating a bio-optical model, a parameterized simulation model is established. This model enables accurate real-time simulation of color values at any point on the water surface and underwater. The method achieves an average running frame rate of 101.5 FPS while handling scenes with over 1.2 million triangles, underscoring its high computational efficiency and real-time performance. Comparative analysis with existing models reveals that this approach not only accounts for water quality parameters, such as chlorophyll, colored dissolved organic matter (CDOM), and suspended particles, but also extends simulations to both surface and underwater environments. Experimental results indicate that the model attains a high degree of realism in replicating diverse coastal water settings, with color accuracy within ±5 % of measured values. This represents a substantial enhancement in accuracy and real-time performance over previous models, which often neglect real-time underwater simulations. The proposed method offers a more precise and efficient solution for visualizing intricate coastal water environments.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"194 ","pages":"Article 109093"},"PeriodicalIF":3.5,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144196183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Design of a static Fourier transform long-wave infrared imaging spectrometer using interferometric supersampling and the rolling shutter method","authors":"Lizhong Wei, Shining Ma, Ningfang Liao, Wenmin Wu","doi":"10.1016/j.optlaseng.2025.109104","DOIUrl":"10.1016/j.optlaseng.2025.109104","url":null,"abstract":"<div><div>Temporally-spatially modulated Fourier transform imaging spectrometers employing interferometric dimension supersampling technology enable precise spectral reconstruction, even when the Nyquist sampling rate is not satisfied. Traditional super-resolution methods often require multiple focal plane detector shifts during a single super-resolution process, leading to low timing resolution. This study introduces a novel super-resolution technique leveraging detector rolling shutter exposure. By modifying the exposure time delay across multiple rows of the detector during its movement, the method achieves evenly spaced exposures within the time required for the detector to shift by a single pixel. The results demonstrate that under conditions of a 6000 μm lateral shear and a detector resolution of 384 × 288 pixels, the instrument achieves a spectral resolution performance of 2.67 cm-1 with an 8 × supersampling factor. Notably, the supersampling process requires only 33 milliseconds, significantly faster than the 614 milliseconds reported in previous studies. This study was conducted at the National Key Discipline Laboratory of Color Science and Engineering, Beijing Institute of Technology, Beijing, China, during the fourth quarter of 2024.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"194 ","pages":"Article 109104"},"PeriodicalIF":3.5,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144196182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Siyuan Li , Haixin Luo , Huancong Huang , Liyao Chen , Teng Wei , Jie Xu , Jindong Tian
{"title":"High-contrast, label-free, specific-colored 3D bioimaging via polarization-enhanced intensity diffraction tomography","authors":"Siyuan Li , Haixin Luo , Huancong Huang , Liyao Chen , Teng Wei , Jie Xu , Jindong Tian","doi":"10.1016/j.optlaseng.2025.109122","DOIUrl":"10.1016/j.optlaseng.2025.109122","url":null,"abstract":"<div><div>Label-free intensity diffraction tomography (IDT) has attracted considerable attention for 3D biological imaging due to its label-free capability, minimal system complexity, and reduced coherent noise. However, like other phase contrast techniques, IDT suffers from limited contrast and lacks molecular specificity compared to fluorescence imaging. To address these limitations, we present polarization-enhanced intensity diffraction tomography (PeIDT), which utilizes annular illumination scanning and a polarization analyzer. In the proposed PeIDT, the reconstructed refractive index (RI) is extended to a vector similar to a Stokes vector (i.e., <em>n</em><sub>I</sub>, <em>n</em><sub>Q</sub>, and <em>n</em><sub>U</sub>), termed polarization-sensitive vector RI (PsRI), carrying specific polarization information about the biological sample. Furthermore, by fusing these components in the HSV method, PeIDT provides polarization-specific enhanced 3D reconstructions. Simulations and experiments on phantom cells, Paramecium, oral epithelial cells, and mouse liver tissue validate the method’s capability for high-contrast, label-free, volumetric imaging of complex biological specimens.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109122"},"PeriodicalIF":3.5,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Image cryptography algorithm based on a new composite chaotic system and Latin square collaborative mechanism","authors":"Anhong Tian , Zhongze Yue , Chengbiao Fu","doi":"10.1016/j.optlaseng.2025.109084","DOIUrl":"10.1016/j.optlaseng.2025.109084","url":null,"abstract":"<div><div>Encryption algorithms based on chaos theory have become a prominent research focus in the field of information security. However, existing chaotic systems exhibit several limitations, including discontinuous chaotic intervals, low complexity of chaotic signals, and insufficient robustness in their dynamical behavior. These deficiencies pose potential risks to the application of chaotic cryptography. To address these issues, this paper proposes a universal two-dimensional composite hyperchaotic system model (2D-CHS). Through rigorous theoretical analysis, it is demonstrated that the number of positive Lyapunov exponents (<em>LEs</em>) in 2D-CHS is always equal to its dimensionality, indicating the existence of infinitely many coexisting attractors and strong robustness against dynamical degradation. To validate the effectiveness of the proposed 2D-CHS, three one-dimensional chaotic maps are first employed as seed maps to construct three 2D chaotic mappings as representative examples. Evaluation and experimental results demonstrate that the newly generated chaotic maps exhibit broader and more continuous chaotic intervals than traditional chaotic maps, and they also outperform existing systems in terms of <em>LEs</em>, the <em>0–1 t</em>est, sample entropy (<em>SE</em>), permutation entropy (<em>PE</em>), and correlation dimension (<em>CD</em>). Furthermore, a digital circuit implementation scheme based on a microcontroller is designed to verify the practical feasibility and physical realizability of the proposed system. Finally, the novel 2D chaotic system is integrated with Latin square matrices to develop a high-efficiency image encryption algorithm. Experimental results confirm that the algorithm demonstrates excellent efficiency and security performance.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109084"},"PeriodicalIF":3.5,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144184391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Research on tunable laser power amplification for fiber grating sensing demodulation","authors":"Jingjing Liao , Yuexin Li , Jingtao Xin , Lianqing Zhu , Mingli Dong , Peng Tian","doi":"10.1016/j.optlaseng.2025.109118","DOIUrl":"10.1016/j.optlaseng.2025.109118","url":null,"abstract":"<div><div>To solve the problem of tunable semiconductor lasers in a multichannel Fiber Bragg Grating (FBG) real-time demodulation system, where the milliwatt output power limits channel expansion, a seed optical power amplification method was proposed. An MG-Y tunable semiconductor laser was used as the seed light source, and a single-pass forward erbium-doped fiber amplifier (EDFA) was employed as the amplifier. By optimizing the laser diode (LD) power, seed-light injection power, and erbium-doped fiber length, a laser output power of 199.5 mW was achieved, proving the feasibility of applying the method to a multichannel real-time demodulation system. To investigate the reliability of the power amplification light source applied to a multichannel real-time demodulation system, the output wavelength stability, bandwidth, and response time of the seed light and power amplifier light source were characterized. The results show that the stability of the seed light and power amplifier light source wavelength was ±2.5 pm and ±2.8 pm, respectively. However, although the wavelength stability of the power amplifier light source deteriorates slightly, it can be effectively improved by algorithm compensation. In general, the power amplification method not only significantly improves the seed light power but also maintains the stability of the seed light spectral performance and has mode suppression effects. Employing this study, it is expected that the number of demodulator channels can be expanded by a factor of 10, providing significant technical support for the realization of real-time demodulation of more channels.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109118"},"PeriodicalIF":3.5,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144184393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}