Optical Review最新文献

Performance analysis of LDPC decoding algorithm based on PPM modulation for UWOC system under turbulent channel

IF 1.2 4区物理与天体物理

Optical Review Pub Date : 2025-03-27 DOI: 10.1007/s10043-025-00955-2

Feng Ji, Da-Shuai Wang, Le Wang, Shou-Feng Tong

引用次数: 0

Inverted signal-frequency detection and velocity measurement by self-coupling laser sensor array using modulation frequency difference

IF 1.2 4区物理与天体物理

Optical Review Pub Date : 2025-03-19 DOI: 10.1007/s10043-025-00953-4

Daiki Sato, Daisuke Mizushima, Norio Tsuda

{"title":"Inverted signal-frequency detection and velocity measurement by self-coupling laser sensor array using modulation frequency difference","authors":"Daiki Sato, Daisuke Mizushima, Norio Tsuda","doi":"10.1007/s10043-025-00953-4","DOIUrl":"https://doi.org/10.1007/s10043-025-00953-4","url":null,"abstract":"In this paper, we report the theory of a self-coupling laser sensor array system for improving the signal-frequency inversion problem and the results of velocity measurements with this system. A self-coupling laser sensor is an interferometer that uses optical beats produced by the interference between the light returned from the laser target and the light in the active layer of the laser diode. Using wavelength modulation, this system can simultaneously measure multiple metrological quantities, such as the absolute distance to a target and velocity of a target. However, in a self-coupling laser sensor using wavelength modulation, the signal frequency is inverted and becomes negative if the Doppler shift of the returned light owing to the movement of the target is larger than the signal frequency when the target is stopped. In this case, it is impossible to detect the positive or negative value of the signal directly, resulting in a large measurement error. This has been regarded as a problem that limits the measurement dynamic range of the modulated self-coupling laser sensors. In this study, we propose a system to accurately detect the signal-frequency inversion and improve the measurement dynamic range. The proposed system detects the positive or negative value of the signal frequency from the relationship between the velocity and signal frequency obtained by irradiating multiple beams with different modulation frequencies and then recalculates the accurate measurement value. The measurement results reveal that this system can accurately measure the moving velocity of a target, even when the signal frequency is inverted.","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"16 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143653810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Through-focus scanning re-radiance simulation for semiconductor inspection system development

IF 1.2 4区物理与天体物理

Optical Review Pub Date : 2025-03-19 DOI: 10.1007/s10043-025-00959-y

Byeongjoon Jeong, Heejoo Choi, Daewook Kim, Youngsik Kim

引用次数: 0

Inhomogeneous birefringence analysis using a tensor-valued backprojection

IF 1.2 4区物理与天体物理

Optical Review Pub Date : 2025-03-19 DOI: 10.1007/s10043-025-00954-3

Masafumi Seigo, Hidetoshi Fukui, Shogo Kawano, Meredith Kupinski

{"title":"Inhomogeneous birefringence analysis using a tensor-valued backprojection","authors":"Masafumi Seigo, Hidetoshi Fukui, Shogo Kawano, Meredith Kupinski","doi":"10.1007/s10043-025-00954-3","DOIUrl":"https://doi.org/10.1007/s10043-025-00954-3","url":null,"abstract":"Injection-molded lenses have an inhomogeneous stress-induced birefringence that can degrade optical performance. This paper presents a new approach for measuring and analyzing inhomogeneous anisotropic samples. The birefringence distribution is characterized by 3D index ellipsoids, and a tomographic reconstruction of this 3D distribution is developed from a linear line projection relationship between the spatially varying index ellipsoids and tomographic polarimetry. This forward representation enables a tensor-valued backprojection for reconstructing the birefringence distribution of an inhomogeneous anisotropic sample. In this approach, each index ellipsoid is represented by a Hermitian matrix, and the 3D birefringence distribution is defined as the distribution of these matrices. This paper is centered on the introduction of the fundamental algorithm and the presentation of a general solution by applying the Radon transform and the backprojection to a tensor field, without requiring specific parameters such as stress fields. Consequently, the computational approach presented in this paper demonstrates that, using 60 tomographic views, reconstruction errors for parameters that characterize spatially varying index ellipsoids remain less than 5%. Here, the error is defined as the ratio of reconstruction variation to the respective maximum values of the original distributions.","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"56 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143653766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deep-learning-assisted single-shot 3D shape and color measurement using color fringe projection profilometry

IF 1.2 4区物理与天体物理

Optical Review Pub Date : 2025-03-17 DOI: 10.1007/s10043-025-00962-3

Kanami Ikeda, Takahiro Usuki, Yumi Kurita, Yuya Matsueda, Osanori Koyama, Makoto Yamada

引用次数: 0

Camera calibration based on center circle and halfway line of sports ground and position estimation of moving target

IF 1.2 4区物理与天体物理

Optical Review Pub Date : 2025-03-09 DOI: 10.1007/s10043-025-00956-1

Xuemei Yang, Xiaomei Kou, Yue Zhao

{"title":"Camera calibration based on center circle and halfway line of sports ground and position estimation of moving target","authors":"Xuemei Yang, Xiaomei Kou, Yue Zhao","doi":"10.1007/s10043-025-00956-1","DOIUrl":"https://doi.org/10.1007/s10043-025-00956-1","url":null,"abstract":"In various sports, the motion information of athletes is often measured for monitoring and evaluation, and the direct use of common optical equipment to determine the position and orientation of moving objects according to geometric information in a scene has become an important research topic in image understanding. As many sports grounds have a center circle and halfway line, we propose an algorithm that first obtains constraints on the image of the circle center by using homography based on the geometric properties of the circle perimeter and corresponding circumferential angle. Then, the vanishing line is obtained from the image of the circle center and the complete circle image based on the pole-polar relation with respect to the camera internal parameters. By decomposing the circle image, the camera external parameters are obtained to determine the homography matrix from a spatial point to an image point. The camera at the edge of the moving field is calibrated according to the duality of the conic and homography matrices. Using the homography matrix between a point on the moving ground plane and the corresponding image point, the coordinates of the measured point can be recovered to estimate the pose (i.e., position and orientation) of a moving target.","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"128 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143582639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantum characteristics of a nondegenerate three-level laser with parametric amplification in an open cavity

IF 1.2 4区物理与天体物理

Optical Review Pub Date : 2025-03-06 DOI: 10.1007/s10043-025-00960-5

Aliyyi Adem

{"title":"Quantum characteristics of a nondegenerate three-level laser with parametric amplification in an open cavity","authors":"Aliyyi Adem","doi":"10.1007/s10043-025-00960-5","DOIUrl":"https://doi.org/10.1007/s10043-025-00960-5","url":null,"abstract":"This study investigates the entanglement and squeezing characteristics of light generated by a non-degenerate, coherently driven three-level laser in an open cavity, coupled to a two-mode vacuum reservoir through a single-port mirror. By normal ordering the noise operators, we simplified the calculations and derived the evolution equations for the atomic operators using the master equation. From the steady-state solutions, we determined the average of the photon number, the quadrature variance of radiation, entanglement, the normalized second-order correlation of the cavity radiation, the linear correlation coefficient between the two modes, and fluctuations in intensity difference. Our findings indicate that higher spontaneous emission rates significantly decrease the average photon number, while the amplitude of the pumping mode interacting with the parametric amplifier ((varepsilon)) increases it. Enhanced squeezing is observed with increasing ((varepsilon)), reaching a peak at (varepsilon = 0.03) ((72.6%)). Moreover, spontaneous emission enhances squeezing. A direct correlation between squeezing and entanglement is found, with greater squeezing associated with increased entanglement. These insights have significant implications for advancing quantum technologies, such as quantum communication, where controlled squeezing and entanglement improve secure communication channels and signal-to-noise ratios, quantum computing, where they enhance error correction protocols and gate operation efficiencies, and quantum sensing, where they increase sensitivity for more precise measurements of physical quantities.","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"16 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-performance self-powered ultraviolet photodetector based on CuI/MgZnO heterojunction with interfacial engineering by Cu2O 基于铜氧化物界面工程的 CuI/MgZnO 异质结的高性能自供电紫外线光电探测器

IF 1.2 4区物理与天体物理

Optical Review Pub Date : 2025-03-02 DOI: 10.1007/s10043-025-00961-4

Yue Zhu, Yanhua Qu

{"title":"High-performance self-powered ultraviolet photodetector based on CuI/MgZnO heterojunction with interfacial engineering by Cu2O","authors":"Yue Zhu, Yanhua Qu","doi":"10.1007/s10043-025-00961-4","DOIUrl":"https://doi.org/10.1007/s10043-025-00961-4","url":null,"abstract":"A novel self-powered ultraviolet (UV) photodetector (PD) based on a CuI/MgZnO heterojunction modified by an ultrathin Cu2O layer has been fabricated by the successive ionic layer adsorption and reaction (SILAR) method. Compared with the CuI/MgZnO self-powered PD, the optimised heterojunction PD (CuI/Cu2O/MgZnO) exhibits significantly improved self-powered properties. Under 325 nm UV light at an intensity of 450 µW/cm2, the CuI/Cu2O/MgZnO heterojunction PD shows exceptional photoelectric performance, featuring a high photo-to-dark current ratio of 1611, a large responsivity of 48.43 mA/W, and rapid rise and decay times of 261 ms and 890 ms, respectively, without any external power supply. Incorporating the Cu2O interface layer results in notable enhancements in responsivity and detectivity compared to the heterojunction without the Cu2O layer. This improvement is attributed to heterojunction interface contact, energy band engineering, and the tunneling effect. The Cu2O layer expands the depletion zone and promotes charge separation. Due to its thinness, charges can tunnel through the Cu2O layer from one metal electrode to another. Furthermore, the interfacial Cu2O layer can alter the valence band offset and the conduction band offset of the p-CuI/n-MgZnO junction, enhancing carrier transport between MgZnO and CuI. These results lay the groundwork for using self-powered MgZnO-based heterojunction photodetectors in light-based devices in the future. They also demonstrate the potential of designing novel heterojunctions to create high-performance self-powered PDs for UV detection.","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"5 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143528227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Steel surface defect detection based on bidirectional cross-scale fusion deep network

IF 1.2 4区物理与天体物理

Optical Review Pub Date : 2025-02-28 DOI: 10.1007/s10043-025-00957-0

Zhihua Xie, Liang Jin

{"title":"Steel surface defect detection based on bidirectional cross-scale fusion deep network","authors":"Zhihua Xie, Liang Jin","doi":"10.1007/s10043-025-00957-0","DOIUrl":"https://doi.org/10.1007/s10043-025-00957-0","url":null,"abstract":"In the industrial production of steel materials, various complex defects may appear on the steel surface owing to the influence of environmental and other ambient factors. These defects are often accompanied by large amounts of background texture information. Especially, some defects with the low resolution and small size are prone to false alarms and missing detections. Aiming to address the issues of these specific defects, this paper proposes a bidirectional cross-scale feature fusion network combined with non-stridden convolution for steel surface defect detection. First, to improve the model’s inference speed and reduce the number of parameters, a simple yet effective convolution (PConv), the core component of FasterNet, is introduced in the feature extraction module instead of the traditional ResNet operator. Second, the bidirectional crossing (BiC) module is embedded to construct a bidirectional cross-scale feature fusion network (BiCCFM), which provides more accurate localization clues to enhance the feature representation on small targets. Finally, combined with non-stridden convolution, the SPD-Conv module is developed to aggregate the detection performance of small targets in low-resolution images. Comprehensive experimental results on the public NEU-DET dataset validate the effectiveness of the embedded modules and the proposed model. Compared with other state-of-the-art methods, the proposed model achieves the best accuracy (74.2% mAP @ 0.5) while maintaining a relatively small number of parameters.","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"27 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Imaging of breast cancer using reflectance diffuse optical tomography (RDOT) 利用反射漫反射光学断层扫描（RDOT）进行乳腺癌成像

IF 1.2 4区物理与天体物理

Optical Review Pub Date : 2025-02-28 DOI: 10.1007/s10043-025-00952-5

Nobuko Yoshizawa, Yuko Asano, Kenji Yoshimoto, Hiroko Wada, Etsuko Ohmae, Yukio Ueda, Tetsuya Mimura, Harumi Sakahara, Kei Koizumi, Satoshi Goshima, Hiroyuki Ogura

{"title":"Imaging of breast cancer using reflectance diffuse optical tomography (RDOT)","authors":"Nobuko Yoshizawa, Yuko Asano, Kenji Yoshimoto, Hiroko Wada, Etsuko Ohmae, Yukio Ueda, Tetsuya Mimura, Harumi Sakahara, Kei Koizumi, Satoshi Goshima, Hiroyuki Ogura","doi":"10.1007/s10043-025-00952-5","DOIUrl":"https://doi.org/10.1007/s10043-025-00952-5","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background</h3>Two-dimensional mapping based on reflectance measurements is a promising approach for evaluating the characteristics of breast cancer and its response to chemotherapy. However, three-dimensional imaging should enable extraction of more accurate values and distributions of the parameters, potentially increasing the validity of the assessment. Therefore, we have been developing reflectance diffuse optical tomography (RDOT) for three-dimensional imaging of breast cancer using time-domain reflectance measurements.<h3 data-test=\"abstract-sub-heading\">Methods</h3>We performed RDOT imaging on 64 patients with breast cancer and acquired three-dimensional images of total hemoglobin concentration (tHb) and tissue oxygen saturation (StO2) at the lesion and a symmetrical area in the normal breast. The correlation between tHb and the skin-to-chest wall distance was investigated to evaluate the effect of the chest wall. We also examined correlations of tHb with tumor depth and tumor thickness. In addition, we measured patients with breast cancer before and after they underwent neoadjuvant chemotherapy and compared the results.<h3 data-test=\"abstract-sub-heading\">Results</h3>The tHb value increased in both cancerous and normal breasts as the skin-to-chest wall distance decreased. Cancerous breasts showed higher tHb and lower StO2 than normal breasts. tHb showed a negative correlation with tumor depth and a positive correlation with tumor thickness. Long-term monitoring of lesions during chemotherapy demonstrated that tHb decreased as the tumor size reduced with chemotherapy.<h3 data-test=\"abstract-sub-heading\">Conclusions</h3>We confirm that the RDOT has potential for a novel examination method with no pain and no radiation exposure; however, the reconstructed image is still affected by chest wall, tumor size, and tumor depth.","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"32 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143518676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0