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Spatial intensity correlations of Mathieu speckle fields Mathieu散斑场的空间强度相关性
IF 1.3 4区 物理与天体物理
Journal of Modern Optics Pub Date : 2023-03-12 DOI: 10.1080/09500340.2023.2232886
C. Acevedo, Yezid Torres Moreno, J. Guzmán-Sepúlveda, A. Dogariu
{"title":"Spatial intensity correlations of Mathieu speckle fields","authors":"C. Acevedo, Yezid Torres Moreno, J. Guzmán-Sepúlveda, A. Dogariu","doi":"10.1080/09500340.2023.2232886","DOIUrl":"https://doi.org/10.1080/09500340.2023.2232886","url":null,"abstract":"Analytical expressions are derived for the spatial coherence function of a speckle field that is generated by the scattering of a Mathieu beam from a random phase mask by following the Fresnel diffraction theory. The general results in the free-space propagation show that the intensity correlation factor is a function of the order of the Mathieu beam, and it evolves spatially as the speckle field propagates. Also, we demonstrate that the intensity correlation factor is non-evolving with the propagation distance in the far-field regime when a lens is placed at the focal distance after the diffuser. The results of this analysis can be used in applications where random fields need to be engineered with structured light beams.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45723891","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
A study on the design, morphology and electro-optical properties of polymer dispersed liquid crystal films doped with Sudan black B dye 苏丹黑B染料掺杂聚合物分散液晶膜的设计、形貌及电光性能研究
IF 1.3 4区 物理与天体物理
Journal of Modern Optics Pub Date : 2023-03-12 DOI: 10.1080/09500340.2023.2232897
F. Ahmad, M. Jamil, Park Woo Hyun, M. Luqman, Shagufta Sajjad, M. Baloch
{"title":"A study on the design, morphology and electro-optical properties of polymer dispersed liquid crystal films doped with Sudan black B dye","authors":"F. Ahmad, M. Jamil, Park Woo Hyun, M. Luqman, Shagufta Sajjad, M. Baloch","doi":"10.1080/09500340.2023.2232897","DOIUrl":"https://doi.org/10.1080/09500340.2023.2232897","url":null,"abstract":"To fabricate and use PDLC-based smart windows, electro-optical (EO) properties such as high transparency at low driving voltages, high contrast ratios (CR), and a wide viewing angle are critical. Thus, there is always a need to either develop new materials with excellent performance or to improve the existing ones. Doping materials (other than the LC and polymeric materials) such as dyes and nanomaterials, can also be used to adjust the EO properties. Sudan black B (SBB) dye and newly available LC material were doped in PDLC material in order to address such a scenario. In our investigation, we found that the doping SBB dye at a weight ratio of 1wt%and LC material with 60 wt% into NOA65 prepolymer PDLC resulted in a great performance of PDLC devices e.g. a high CR response (8.8) and high transmittance even at a low deriving voltage (5 Volt).","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46033543","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
Ultrafast laser micromachining of angled surfaces in fused silica 熔融二氧化硅斜角表面的超快激光微加工
IF 1.3 4区 物理与天体物理
Journal of Modern Optics Pub Date : 2023-03-12 DOI: 10.1080/09500340.2023.2232898
Y. Dogan
{"title":"Ultrafast laser micromachining of angled surfaces in fused silica","authors":"Y. Dogan","doi":"10.1080/09500340.2023.2232898","DOIUrl":"https://doi.org/10.1080/09500340.2023.2232898","url":null,"abstract":"Angled surfaces are significant for obtaining complex 3D glass structures to be employed in precise optical components such as light guides. However, it is challenging to fabricate angled structures in glass with high precision. In this study, femtosecond laser irradiation followed by a chemical etching process is used to create a 45-degree angled surface. The roughness values of the angled top and bottom surfaces are compared and the parameters are optimized to achieve maximum surface quality. A 45-degree angled surface with <300 nm roughness and <±0.5° deviation is obtained in a given area of 1 × 1.5 mm2. Using this approach, various complex structures have been successfully fabricated with high quality and precision. Results indicate that this method can be adapted to the high-precision glass manufacturing industry.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47776372","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
Research on elaborate image simulation method for close-range space target 近距离空间目标精细图像仿真方法研究
IF 1.3 4区 物理与天体物理
Journal of Modern Optics Pub Date : 2023-02-23 DOI: 10.1080/09500340.2023.2219776
Hao Wang, Qianhao Ning, Zhiqiang Yan, Xiang Liu, Yinxi Lu
{"title":"Research on elaborate image simulation method for close-range space target","authors":"Hao Wang, Qianhao Ning, Zhiqiang Yan, Xiang Liu, Yinxi Lu","doi":"10.1080/09500340.2023.2219776","DOIUrl":"https://doi.org/10.1080/09500340.2023.2219776","url":null,"abstract":"In order to meet the urgent needs of target image data in the testing of close-range space target situational awareness algorithm, an elaborate image simulation method that fully considers the target surface texture structure is proposed. First, the physical mechanism is analysed by constructing a radiation transmission model. Then, Phong and five-parameters BRDF models are adopted to characterize the optical properties of the material. The geometric characteristic of texture structure is also characterized through displacement mapping. Finally, the sequence images of the space target are obtained by simulation based on the designed simulation process and given imaging conditions. The CPU multi-core parallel acceleration based on the Embree engine is taken to compensate for the speed reduction caused by the increase in the number of model faces. Compared with the measured image in orbit for verification, the image simulation similarity is above 80%. The results show that the simulation method in this article can better describe the characteristics of the target in the actual on-orbit environment and meet the near real-time simulation requirements of the system, providing a more realistic image data source for the ground test of the on-orbit service technology.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49582936","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: 1
Revisiting the experimental dielectric function datasets of gold in accordance with the Brendel-Bormann model 根据Brendel Bormann模型修正金的实验介电函数数据集
IF 1.3 4区 物理与天体物理
Journal of Modern Optics Pub Date : 2023-02-23 DOI: 10.1080/09500340.2023.2219781
F. Firouzi, S. Sadrnezhaad
{"title":"Revisiting the experimental dielectric function datasets of gold in accordance with the Brendel-Bormann model","authors":"F. Firouzi, S. Sadrnezhaad","doi":"10.1080/09500340.2023.2219781","DOIUrl":"https://doi.org/10.1080/09500340.2023.2219781","url":null,"abstract":"As a result of adopting various sample preparation techniques and optical measurement strategies, there are different experimental datasets available for presenting the complex dielectric function of gold. Therefore, evaluating them and selecting the most reliable ones seem essential for the corresponding optical-based designs and applications. The Brendel-Bormann model, one of the most accurate theoretical models for rendering the complex dielectric function of materials, is considered an appropriate criterion for this purpose. Despite the model's computational complexity, MS Excel has been employed as a fast and accessible tool for calculating the model. According to the results, ‘Palik' and ‘Babar' exhibit the most accurate datasets representing the real part of the dielectric function of gold in the short- (<500 nm) and long-wavelength (>500 nm) ranges, respectively. While the proposition reverses for the imaginary part of the dielectric function. This validity owes to using gold samples with the lowest structural and surface imperfections.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49550118","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
Modulation of the second-order sideband efficiency of a double-cavity optomechanical system by mechanical pumps 机械泵对双腔光机械系统二阶边带效率的调制
IF 1.3 4区 物理与天体物理
Journal of Modern Optics Pub Date : 2023-02-23 DOI: 10.1080/09500340.2023.2221746
Q. Liao, Wenchao Kuang, Qingfa Xu
{"title":"Modulation of the second-order sideband efficiency of a double-cavity optomechanical system by mechanical pumps","authors":"Q. Liao, Wenchao Kuang, Qingfa Xu","doi":"10.1080/09500340.2023.2221746","DOIUrl":"https://doi.org/10.1080/09500340.2023.2221746","url":null,"abstract":"We study the effect of external mechanical pumps on the second-order sideband generation (SSG) efficiency in a double-cavity optomechanical system. The SSG efficiency can be tuned by changing the amplitude and phase of the mechanical pumps. When external mechanical pumps are applied to both mechanical resonators, the influence on the SSG efficiency is a superposition of the two mechanical pumps driven separately. The SSG efficiency can be increased up to three times with the application of mechanical pumps compared to the case without external mechanical pumps. The present investigation proposes a method that can be applied to more cavity cascades to achieve more desirable SSG efficiency and optimize nonlinear optical properties.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45695350","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
Optical spectra for a cholesteric elastomer doped with metallic nanospheres with an inversion defect 掺杂有反转缺陷的金属纳米球的胆甾体光谱
IF 1.3 4区 物理与天体物理
Journal of Modern Optics Pub Date : 2023-02-23 DOI: 10.1080/09500340.2023.2220429
G. Reyes, J. A. Reyes
{"title":"Optical spectra for a cholesteric elastomer doped with metallic nanospheres with an inversion defect","authors":"G. Reyes, J. A. Reyes","doi":"10.1080/09500340.2023.2220429","DOIUrl":"https://doi.org/10.1080/09500340.2023.2220429","url":null,"abstract":"We are considering the propagation of circularly polarized light normally impinging on a cholesteric elastomer slab doped with metallic spheres. The slab is composed of two layers: the first layer is a right-handed chiral structure, and the second one is a helix with left-handedness; however, the pitch of the chiral structure remains constant. We performed a theoretical model to find numerically, reflection and transmission spectra for circularly polarized light impinging on the slab. We considered the effects of mechanical strains along the helical axis since the force exerted on the structure can tilt the mesogens in the slab along the helical axis. The Photonic Band-Gap(PBG) of the elastomer slab becomes narrowed because of the strain; there we also observe high reflectance (hyper-reflectivity) that depends on the filling factor of the silver doping and on whether the defect is located at a position that contains complete periods of the structure. Additionally, the spectra display reflection bands for both right- and left-polarized light. We expressed the PBG edges in terms of material parameters; this allows us to select the region of the electromagnetic spectrum for the reflection bands. This medium exhibits a hyper-reflective photonic band when the pitches of both right- and left-handed helical layers are identical.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47146142","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
Photon bunching from an equilateral triangle of atoms 原子等边三角形中的光子聚束
IF 1.3 4区 物理与天体物理
Journal of Modern Optics Pub Date : 2023-02-23 DOI: 10.1080/09500340.2023.2220162
Q. Gulfam
{"title":"Photon bunching from an equilateral triangle of atoms","authors":"Q. Gulfam","doi":"10.1080/09500340.2023.2220162","DOIUrl":"https://doi.org/10.1080/09500340.2023.2220162","url":null,"abstract":"Fluorescent photon emission probability from a system of three atoms has been studied as a function of detection angles. The system under investigation consists of identical bi-level atoms forming an equilateral triangle. Only a single atom in the triangle is resonantly excited by a weak laser. The interaction mechanism among the atoms is the vacuum-mediated dipole–dipole interaction and the collective decay process. The focus is to analyse the photon pairs simultaneously radiated by the system in the far-field domain. The analysis has been done for various interatomic separations. It is seen that the interference between the photon emitters can lead to strong emission in certain directions. An intuitive understanding of the interesting directions for strong photon bunching is given. It is found that a reduction in the intensity of radiation leads to superradiance along specific directions.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46964392","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: 1
Design of an RGB colour separation prism based on the maximum ratio of aperture to length 基于最大孔径长度比的RGB分色棱镜的设计
IF 1.3 4区 物理与天体物理
Journal of Modern Optics Pub Date : 2023-02-23 DOI: 10.1080/09500340.2023.2219769
Yunfeng Jiang, Dong-Sheng Wu, Bin Zhou, Jie Liu, Fuyu Huang
{"title":"Design of an RGB colour separation prism based on the maximum ratio of aperture to length","authors":"Yunfeng Jiang, Dong-Sheng Wu, Bin Zhou, Jie Liu, Fuyu Huang","doi":"10.1080/09500340.2023.2219769","DOIUrl":"https://doi.org/10.1080/09500340.2023.2219769","url":null,"abstract":"We redesigned the RGB colour separation prism to decrease its size without reducing the light passing through and still obtain the efficient colour separation. The ideal dimensions of the prism based on the principles of the maximum ratios of aperture to length and aperture to height were calculated. The two aperture values were similar, but the field-of-view angle is 30.74° when the ratio of aperture to length is maximum which is 11.64° greater than the other principle. Therefore, we focused the design on the former. TFCalc software was used to design and optimize the colour separation films and we got the films with great performance of colour separation and depolarization. Finally, simulations in ZEMAX software showed that the prism aperture value reached 99.5% of the theoretical. Our strategy validates the consideration of the ratio of the aperture to length to get smaller efficient RGB colour separation prisms.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42836976","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
Preservation and enhancement of quantum correlations under Stark effect Stark效应下量子相关的保持与增强
IF 1.3 4区 物理与天体物理
Journal of Modern Optics Pub Date : 2023-02-23 DOI: 10.1080/09500340.2023.2219779
N. Chandra, Rajiuddin Sk, P. Panigrahi
{"title":"Preservation and enhancement of quantum correlations under Stark effect","authors":"N. Chandra, Rajiuddin Sk, P. Panigrahi","doi":"10.1080/09500340.2023.2219779","DOIUrl":"https://doi.org/10.1080/09500340.2023.2219779","url":null,"abstract":"We analyse the dynamics of quantum correlations by obtaining the exact expression of Bures distance entanglement, trace distance discord, and local quantum uncertainty of two two-level atoms. Here, the atoms undergo two-photon transitions mediated through an intermediate virtual state where each atom is separately coupled to a dissipative reservoir at zero temperature in the presence of the Stark shift effect. We have investigated the dynamics of this atomic system for two different initial conditions of the environment. In the first case, we have assumed the environment's state to be in ground state and in the other case, we have assumed the state to be in the first excited state. The second initial condition is significant as it shows the role played by both the Stark shift parameters in contrast to only one of the Stark shift parameters for the first initial condition. Our results demonstrate that quantum correlations can be sustained for an extended period in the presence of Stark shift effect in the case of both Markovian and non-Markovian reservoirs. The effect in the non-Markovian reservoir is more prominent than the Markovian reservoir, even for a very small value of the Stark shift parameter. We observe that among the correlation measures considered, only local quantum uncertainty is accompanied by a sudden change phenomenon, i.e. an abrupt change in the decay rate of a correlation measure. Our findings are significant as preserving quantum correlations is one of the essential aspects in attaining optimum performance in quantum information tasks.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42337406","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
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