Optics Communications最新文献_第10页

Detection of high refractive index polymers via spectral Rabi splitting 利用光谱拉比分裂检测高折射率聚合物

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-04-14 DOI: 10.1016/j.optcom.2025.131877

Peihao Su , Wei Li , Yuxiang Peng , Yuanyuan Liu , Kaijun Wang , Jianqiang Liu , Dengyun Lu , Mengdong He

{"title":"Detection of high refractive index polymers via spectral Rabi splitting","authors":"Peihao Su , Wei Li , Yuxiang Peng , Yuanyuan Liu , Kaijun Wang , Jianqiang Liu , Dengyun Lu , Mengdong He","doi":"10.1016/j.optcom.2025.131877","DOIUrl":"10.1016/j.optcom.2025.131877","url":null,"abstract":"<div><div>High refractive index polymers (HRIPs) are characterized with high refractive index, low loss, impact resistance and high transparency, and play an important role in information recording, data storage and integrated circuits. However, their similar molecular structures and small refractive index differences often pose challenges for accurate identification during processing, especially for related polymers under the same chemical group. In this paper, we propose an optical sensor using Rabi splitting to detect HRIPs. The coupled oscillator model reveals the underlying physics, exhibiting an anticrossing gap of 62.04 meV in transmission spectra. Furthermore, the number of periods (<em>N</em>) of the 1D TPC and the position of WS<sub>2</sub> can regulate the coupling strength. Importantly, we have successfully achieved effective optical detection of the high refractive index polymers Polythiol-yne (P1–P5) by exploiting the peak changes of the two transmission peaks generated with Rabi splitting. This work provides an effective optical detection method for the accurate identification of HRIPs with the same chemical group, and will also provide a new way to enhance the development of sensing devices for exciton absorption and visible band sensing.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"586 ","pages":"Article 131877"},"PeriodicalIF":2.2,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143838522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

A Method for improving signal-to-noise ratio and accuracy in detecting micromotion features carried by photon-level targets echo based on micromotion modal decomposition 一种基于微动模态分解的提高光子级目标回波微动特征检测信噪比和精度的方法

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-04-12 DOI: 10.1016/j.optcom.2025.131805

Ce Guan, Zijing Zhang, Yuan Zhao

{"title":"A Method for improving signal-to-noise ratio and accuracy in detecting micromotion features carried by photon-level targets echo based on micromotion modal decomposition","authors":"Ce Guan, Zijing Zhang, Yuan Zhao","doi":"10.1016/j.optcom.2025.131805","DOIUrl":"10.1016/j.optcom.2025.131805","url":null,"abstract":"<div><div>This paper proposes a novel Micromotion Modal Decomposition (MMD) method to solve the problems of reduced signal-to-noise ratio (SNR) and limited detection capabilities of target micromotion features caused by target micromotion in photon-level weak echo detection. A complete model of photon-level weak echo photon heterodyne detection based on the MMD method is constructed and proof-of-concept experiments are conducted. The experimental results show that the MMD method can effectively concentrate the energy of the target echo to the micromotion parameters corresponding to its micromotion mode. Compared with the traditional spectral decomposition (TSD) method which scatters the energy of the target echo in the spectrum, the MMD method can increase the SNR by 5 times. For target echoes with an average power of <span><math><mrow><mn>9</mn><mo>×</mo><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mo>−</mo><mn>15</mn></mrow></msup><mspace></mspace><mi>W</mi></mrow></math></span>, MMD can achieve millimeter-level micromotion amplitude detection accuracy for targets with a micromotion frequency up to 111 Hz. The MMD method improves the detection capabilities of target micromotion features under weak echo conditions. In addition, this method can discriminate and detect multiple targets within the same field of view. This advance is of great significance for the detection of micromotion features of small targets at long distances.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"585 ","pages":"Article 131805"},"PeriodicalIF":2.2,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Local field effect on Magneto-optical Feshbach Resonance 磁光费什巴赫共振的局域场效应

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-04-12 DOI: 10.1016/j.optcom.2025.131819

Haodan Yang, Fusheng Liu, Guangjiong Dong

引用次数: 0

Cross Beam Saturated Absorption Spectroscopy: A novel technique for optimization of power broadening 交叉束饱和吸收光谱：一种优化功率展宽的新技术

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-04-12 DOI: 10.1016/j.optcom.2025.131870

Shubham Utreja , Pallab Roy , Harish Rathore , Sourin Choudhury , Manoj Das , Subhasis Panja

{"title":"Cross Beam Saturated Absorption Spectroscopy: A novel technique for optimization of power broadening","authors":"Shubham Utreja , Pallab Roy , Harish Rathore , Sourin Choudhury , Manoj Das , Subhasis Panja","doi":"10.1016/j.optcom.2025.131870","DOIUrl":"10.1016/j.optcom.2025.131870","url":null,"abstract":"<div><div>Saturated Absorption Spectroscopy (SAS) is a technique commonly used for recording Doppler broadening free absorption spectra of atomic vapours and also to estimate the natural linewidth of the atomic transitions. However, in conventional SAS two counter-propagating laser beams are used as pump and probe and the linewidths of the absorption spectra show strong dependences with the power of the laser beams following the saturation theory. The present work demonstrates a unique technique of Cross-Beam spectroscopy for recording saturated absorption spectra near their natural linewidth by deploying pump and probe beams in orthogonal orientation instead of their collinear position. In the case of orthogonal orientation, the recorded absorption linewidth hardly varies with the power variation of the laser beam and does not follow the Saturation theory. Following the above technique, transition frequencies for different isotopes of ytterbium (Yb) have been measured, and the transition frequency for the most abundant isotopes, i.e., Yb<sup>174</sup>, estimated to be 751526556.04(60) MHz with natural linewidth of 32.0(8) MHz.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"585 ","pages":"Article 131870"},"PeriodicalIF":2.2,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143835306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Virtual binocular stereo vision measurement method without phase unwrapping 无相位展开的虚拟双目立体视觉测量方法

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-04-12 DOI: 10.1016/j.optcom.2025.131869

Yanjun Fu, Boyang Liu, Kejun Zhong, Guangyu Jiang

引用次数: 0

High efficiency dual-band coding reflection metasurface in terahertz bands 太赫兹波段高效双频编码反射超表面

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-04-11 DOI: 10.1016/j.optcom.2025.131867

Ge Chen , Weijia Han , Wendong Liang , Bingxuan Chen , Bohan Zhang , Guochao Wei , Wei Zhu , Shengxiang Wang

{"title":"High efficiency dual-band coding reflection metasurface in terahertz bands","authors":"Ge Chen , Weijia Han , Wendong Liang , Bingxuan Chen , Bohan Zhang , Guochao Wei , Wei Zhu , Shengxiang Wang","doi":"10.1016/j.optcom.2025.131867","DOIUrl":"10.1016/j.optcom.2025.131867","url":null,"abstract":"<div><div>Here, we introduce a Terahertz (THz) dual-band coding reflective metasurface based on the Pancharatnam-Berry (PB) phase theory. The coding metasurface is consisted of a metal layer with hollow opening resonant ring on top of a double I-shaped deformation structure as the modified Polyimide (MPI) dielectric layer with a bottom reflective layer. It is capable of independent operation at two specific frequency bands of 0.33 THz and 0.51 THz. The high frequency double I-shaped deformation structure and the low frequency openwork resonant ring in the metal layer could be rotated and adjusted by PB phase theory to realize the continuous phase control from 0 to 2π. The coded cell at specific angles could construct coding arrays, achieving the modulation of wavefront. Due to the introduction of various encodings, the proposed metasurface enables to play a role as a vortex light generator at 0.33 THz, while it can act as a Radar Cross-section (RCS) reduction device to suppress the specular reflection of THz circularly polarized light at 0.51 THz. The simulated results show that the coding metasurface can work independently in low-frequency mode and high-frequency mode. In addition, the flexibility of the MPI layer indicates that the proposed metasurface has great potential for the integration of devices in the field of 6G communication and invisible coating.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"587 ","pages":"Article 131867"},"PeriodicalIF":2.2,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Phase-Space propagator for partially coherent wave fields in the spatial domain 空间域中部分相干波场的相空间传播器

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-04-11 DOI: 10.1016/j.optcom.2025.131814

Jake J. Rogers , Tony Kirk , Paul Di Pasquale , Hong Minh Dao , Pierce Bowman , Chanh Q. Tran

{"title":"Phase-Space propagator for partially coherent wave fields in the spatial domain","authors":"Jake J. Rogers , Tony Kirk , Paul Di Pasquale , Hong Minh Dao , Pierce Bowman , Chanh Q. Tran","doi":"10.1016/j.optcom.2025.131814","DOIUrl":"10.1016/j.optcom.2025.131814","url":null,"abstract":"<div><div>The propagation of wave fields and their interactions with matter are important for established and emerging fields in optical sciences. Efficient methods for predicting such behaviour have been employed routinely for coherent sources. However, most real world optical systems exhibit partial coherence, for which the present mathematical description involves high dimensional complex functions and hence poses challenges for numerical implementations. This demands significant computational resources to determine the properties of partially coherent wavefields. Here, we describe the novel Phase-Space (PS) propagator, an efficient and self-consistent technique for free space propagation of wave fields which are partially coherent in the spatial domain. The PS propagator makes use of the fact that the propagation of a wave field in free space is equivalent to a shearing of the corresponding PSD function. Computationally, this approach is simpler and the need for using different propagation methods for near and far-field regions is removed.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"587 ","pages":"Article 131814"},"PeriodicalIF":2.2,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143916474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Improving the spatial resolution of full-field vibration measurements for hollow structures using a speckle compensation calibration method in multi-camera DIC 利用散斑补偿定标方法提高多相机DIC中空结构全场振动测量的空间分辨率

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-04-11 DOI: 10.1016/j.optcom.2025.131865

Yinhang Ma, Zhuoxuan Song, Yusheng Wang, Junnan Guan, Pengfei Zhu, Tengfei Zhang, Dong Jiang

{"title":"Improving the spatial resolution of full-field vibration measurements for hollow structures using a speckle compensation calibration method in multi-camera DIC","authors":"Yinhang Ma, Zhuoxuan Song, Yusheng Wang, Junnan Guan, Pengfei Zhu, Tengfei Zhang, Dong Jiang","doi":"10.1016/j.optcom.2025.131865","DOIUrl":"10.1016/j.optcom.2025.131865","url":null,"abstract":"<div><div>This paper proposes a multi-pose speckle compensation calibration method to overcome the limitations of traditional multi-camera digital image correlation (DIC) systems, which heavily rely on large overlapping fields of view for external parameter calibration. Our method does not require auxiliary calibration equipment. By acquiring speckle images from multiple poses within the overlapping area, it can achieve precise coordinate unification even when the overlapping area is extremely small. The experiment conducted on ceramic plates verified the stitching accuracy of this method. The results show that, compared with the method based on the calibration plate, the errors of this method in the <em>x</em>, <em>y</em>, and <em>z</em> directions are all reduced by more than 50 %. A translation experiment on a hollow sailboard structure investigated the impact of different overlapping area selections on measurement accuracy. The results indicated that with only a two-pixel-wide overlap, the average error in static measurements could be controlled below 10 μm. In the dynamic hammering test of the sailboard, the deviation in natural frequency was less than 2 % compared to that measured by an eddy current sensor. This method optimizes the utilization of spatial resolution and is particularly effective for hollow structures with limited speckle coverage.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"585 ","pages":"Article 131865"},"PeriodicalIF":2.2,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143835303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Second-harmonic generation of trapezoidal grating lithium niobate films based on quasi-bound states in the continuous 基于准束缚态的梯形光栅铌酸锂薄膜的二次谐波生成

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-04-11 DOI: 10.1016/j.optcom.2025.131843

Shuangshuang Hui , Shuwen Cui , Junjie Zhang , Jicheng Wang

{"title":"Second-harmonic generation of trapezoidal grating lithium niobate films based on quasi-bound states in the continuous","authors":"Shuangshuang Hui , Shuwen Cui , Junjie Zhang , Jicheng Wang","doi":"10.1016/j.optcom.2025.131843","DOIUrl":"10.1016/j.optcom.2025.131843","url":null,"abstract":"<div><div>Optical second harmonics (SH) has important applications in many fields, such as micro-imaging techniques and extending the wavelength band of laser light sources. Lithium niobate (LiNbO<sub>3</sub>) can achieve a high SH conversion efficiency by its large second-order nonlinear coefficient. Conventional LiNbO<sub>3</sub> devices require long interaction lengths and meet phase matching requirements. Thin-film lithium niobium oxide enables better optical mode confinement and improves SH conversion efficiency. A distributed Bragg reflection trapezoidal grating SH- conversion device based on quasi-bound states of continuous LiNbO<sub>3</sub> thin films is designed. The device can generate narrow-band resonances with five high Q-factors over a broadband width of 500–800 nm. Based on the multistage expansion algorithm and the magnetic field map obtained by simulation, a suitable resonant mode is selected to obtain a higher SH generation efficiency. By rationally designing the structural parameters of the device as well as the incident light intensity, a high SH generation efficiency of up to 3.35 × 10<sup>−3</sup> can be obtained. As a result, our devices are designed for high efficiency, low loss and multi-band SH generation devices.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"586 ","pages":"Article 131843"},"PeriodicalIF":2.2,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Single-shot non-line-of-sight imaging based on the statistical average characteristics of a speckle pattern under ambient light 基于环境光下散斑图案统计平均特性的单次非视距成像

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-04-11 DOI: 10.1016/j.optcom.2025.131847

Junjie Zhou, Liang Yin, Minglong Hu, Shilin Ren, Yingchun Ding

{"title":"Single-shot non-line-of-sight imaging based on the statistical average characteristics of a speckle pattern under ambient light","authors":"Junjie Zhou, Liang Yin, Minglong Hu, Shilin Ren, Yingchun Ding","doi":"10.1016/j.optcom.2025.131847","DOIUrl":"10.1016/j.optcom.2025.131847","url":null,"abstract":"<div><div>To address the challenges of a small field of view (FOV) and multiple measurements in non-line-of-sight (NLOS) imaging, we propose a method for reconstructing the target object based solely on a random speckle pattern captured by a camera with coherent illumination. Moreover, the imaging FOV is not limited by optical memory effect (OME). Our method is based on the statistical average characteristics of a speckle pattern, and the amplitude information of the object spectrum is extracted through the covariance of this speckle pattern to reconstruct the object. Experimental results demonstrate that our method reconstructed different objects of 1.2 cm in size which are a 2.4-fold OME range, at a distance of 45 cm from the highly scattering wall, with a resolution of approximately 225 <span><math><mrow><mi>μ</mi><mi>m</mi></mrow></math></span>. Furthermore, to address the issue of ambient light damaging the effective information in the speckle patterns, by combining with the first 21 Zernike polynomials, the object was reconstructed under low signal-to-noise ratio (SNR) of −2.06 dB, promoting the application of our method in practical scenarios.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"586 ","pages":"Article 131847"},"PeriodicalIF":2.2,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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