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Research on the motion-free axis synchronization of a novel translational linear structured light scanning system

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-03-06 DOI: 10.1016/j.ijleo.2025.172307

Jianxin Liu , Xingyu Liu , Yanwen Li , Ziming Chen

引用次数: 0

Vanadium pentoxide nanostructures doped in nematic liquid crystal with different compositional percentages and shapes: Nonlinear optical properties

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-03-04 DOI: 10.1016/j.ijleo.2025.172280

Narges Arabshahi Delluey , Abdollah Hassanzadeh , Mohammad Sadegh Zakerhamidi

{"title":"Vanadium pentoxide nanostructures doped in nematic liquid crystal with different compositional percentages and shapes: Nonlinear optical properties","authors":"Narges Arabshahi Delluey , Abdollah Hassanzadeh , Mohammad Sadegh Zakerhamidi","doi":"10.1016/j.ijleo.2025.172280","DOIUrl":"10.1016/j.ijleo.2025.172280","url":null,"abstract":"<div><div>In this study, spherical and wire-shaped vanadium pentoxide (V<sub>2</sub>O<sub>5</sub>) nanostructures with various compositional percentages were doped in the E7 nematic liquid crystal (NLC). The Z-scan technique with both vertical and parallel polarized incident laser beams was used to investigate the nonlinearity of pure and doped NLC with nanoparticles and nanowires. The experimental findings demonstrate that the dopant's form and varying their compositional percentage can alter the nonlinear optical responses of E7. A 1 % W/W ratio of wire-shaped nanostructures and a 0.5 % W/W ratio of spherical nanostructures doped in NLC demonstrated improved nonlinearity. Due to isotropic structure, nonlinear optical characteristics of spherical nanoparticles were insensitive to the light polarization direction, and the self-focusing behavior was observed for both polarizations. However, due to the anisotropic structure of the nanowires, the incident laser beam's polarization direction had a significant impact on the doped NLC's nonlinear optical characteristics. The self-focusing and self-defocusing behavior was observed in both the parallel and vertical polarization.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"327 ","pages":"Article 172280"},"PeriodicalIF":3.1,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143592128","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

Thermoelastic stresses in laser diode bars assembled into arrays with direct convective cooling

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-03-04 DOI: 10.1016/j.ijleo.2025.172283

Vladislav A. Oleshchenko , Alexander V. Uskov , Viktor V. Bezotosnyi

引用次数: 0

Method development for vibration characteristics registration of optically-transparent elements

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-03-04 DOI: 10.1016/j.ijleo.2025.172284

A.V. Ivchenko, A.I. Zhuzhukin, R.N. Sergeev, A.I. Safin

{"title":"Method development for vibration characteristics registration of optically-transparent elements","authors":"A.V. Ivchenko, A.I. Zhuzhukin, R.N. Sergeev, A.I. Safin","doi":"10.1016/j.ijleo.2025.172284","DOIUrl":"10.1016/j.ijleo.2025.172284","url":null,"abstract":"<div><div>A method for investigation of natural vibration modes of the large-sized, optically-transparent products of optical systems has been developed. To measure the vibration displacements of a flat optical surface with the deposited, easily-removable, light-scattering coating, an optical scheme based on the noise-proof speckle pattern interferometer with CW-laser has been proposed. The optimal, optical transmission of the coating has been determined to provide the registration of contrast speckle-interferograms. It was shown that the maximum visibility of interference fringes in speckle interferograms was achieved with a transmission of the light-scattering layer in the range of τ<sub>с</sub> = 43–63 % and decreased beyond the range. In addition, it was noted that use of the optically-dense, the light-scattering coatings with τ<sub>с</sub> < 43 % affected on the number of the recorded interference fringes in speckle-interferograms, although the excitation level of object was constant. The phenomenon was simultaneously occurring with the transition from the mixed reflection to diffuse-scattering when the optically-dense light-scattering coating was deposited. At the same time, it was shown that the effect could not be caused by the detuning of the excited object from resonance due to a gain in the weight of the applied coating. For a diffusely scattering element, as optically-transparent component of the speckle-interferometer, the set of vibration modes corresponding to the calculated data of the numerical model was recorded. It was shown that the mismatch between experimental and calculation data in the magnitudes of resonant frequencies did not exceed 1 % in the range of 20–200 Hz, while for the range of 200–900 Hz it was of 5–7 %.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"327 ","pages":"Article 172284"},"PeriodicalIF":3.1,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601547","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

Photoelasticity for strain analysis of hole in center of octagonal PMMA plate

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-03-03 DOI: 10.1016/j.ijleo.2025.172285

Yongyut Manjit , Netnawee Um-In

{"title":"Photoelasticity for strain analysis of hole in center of octagonal PMMA plate","authors":"Yongyut Manjit , Netnawee Um-In","doi":"10.1016/j.ijleo.2025.172285","DOIUrl":"10.1016/j.ijleo.2025.172285","url":null,"abstract":"<div><div>The strain value caused by a hole in the center of plate is an important variable because it provides insight into how material deformation will occur around the hole, which in turn impacts the strength, fatigue resistance, failure prediction, and overall performance of the part. This research investigated the strain distribution associated with a square hole in the center of an octagonal acrylic (poly(methyl methacrylate) or PMMA) plate using reflection photoelasticity. The novelty of this research is the improved understanding it provided of the strain distribution in a rectangular hole in the center of a plate. Samples were compressed using two-point loading with a hydraulic press system. The results of images taken using a high-resolution, computer-controlled camera showed fringe patterns and the strain distribution resulting from varying the magnitude of loading, the size of the octagon, the size of the square hole and the position of loading. Based on the results, a high-strain region was produced around the contact point and around the corners of the square hole. The maximum strain around the corner edge region of the hole in the octagon was produced with 1000 microstrain for the highest loading (1071 N) and 1150 microstrain for the largest square hole size, and 1080 microstrain for the smallest-sized octagon with the direction of loading along the center of the square hole. The highest strain value of 1400 microstrain was recorded in the contact point region for the loading position at the corner edge of the octagonal PMMA.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"327 ","pages":"Article 172285"},"PeriodicalIF":3.1,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552956","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

Analyzing global parameters of tunable vector vortices generated via conjugate mode interference

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-03-03 DOI: 10.1016/j.ijleo.2025.172290

Hari Krishna Chowduri , Nikhil Vangety , Anirban Majee , I.V. Sankar , Sourabh Roy

{"title":"Analyzing global parameters of tunable vector vortices generated via conjugate mode interference","authors":"Hari Krishna Chowduri , Nikhil Vangety , Anirban Majee , I.V. Sankar , Sourabh Roy","doi":"10.1016/j.ijleo.2025.172290","DOIUrl":"10.1016/j.ijleo.2025.172290","url":null,"abstract":"<div><div>We have demonstrated a method to generate and continuously tune the spatial polarization of optical vector vortex beams. The coherent combination of two optical vortex beams with opposite topological charge and orthogonal circular polarization is achieved using a conjugate mode interferometer to generate optical vector vortex beams. A step neutral density filter is used in one of the arms of the interferometer for controlling the phase and intensity of one of the interfering beams which thereby affects the spatial polarization distribution of the resultant beam. Beams with symmetrical and asymmetrical spatial polarization distribution are generated experimentally by tilting the neutral density filter. Additionally, a set of global parameters that characterize the vector nature of vector vortex beams are discussed and found that the experimental results are in good agreement with the simulated results. The experimentally generated beams are found to have more than 90 % mode purity. This method is a useful tool for small angle sensing, fast switching and continuous tuning of the spatial polarization of vector vortices.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"327 ","pages":"Article 172290"},"PeriodicalIF":3.1,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563293","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

Computational calibration method for defocused wavefront aberration

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-03-03 DOI: 10.1016/j.ijleo.2025.172286

Takao Tanabe , Masato Shibuya , Mitsunori Toyoda

{"title":"Computational calibration method for defocused wavefront aberration","authors":"Takao Tanabe , Masato Shibuya , Mitsunori Toyoda","doi":"10.1016/j.ijleo.2025.172286","DOIUrl":"10.1016/j.ijleo.2025.172286","url":null,"abstract":"<div><h3>Background</h3><div>In interferometry, if an axial displacement persists, a defocused wavefront is superimposed on the measurement wavefront, which must be removed to ensure accurate measurements. Power-only removal, which is effective for low-NA optics, becomes inadequate for high-NA optics and potentially leads to false spherical aberrations. To address this issue, correction methods based on Taylor expansion have been proposed. However, they lack precision as they do not provide an accurate and stable expansion of the defocused wavefront.</div></div><div><h3>Results</h3><div>We aim to provide a rigorous orthogonal expansion, specifically, the Zernike expansion, of the defocused wavefront using the theory of orthogonal polynomials. The Gaussian hypergeometric function allows for the explicit formulation of the inner products between the defocused wavefront and Zernike spherical aberration terms. We evaluated the convergence speed of the proposed method and observed that the expansion converged exponentially to the actual wavefront shape. Using an actual lens design, we compared the results of our new method, the conventional Taylor method, and a numerical method. Our theoretical method demonstrated complete compatibility with the numerical method.</div></div><div><h3>Conclusions</h3><div>The compatibility between our new method and the numerical method confirms that the Zernike expansion of the defocused wavefront is formulated theoretically. Thus, this theory provides a theoretical foundation for discussions regarding ISO 10110–5 and ISO/TR 14999–2 for handling defocused wavefronts.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"327 ","pages":"Article 172286"},"PeriodicalIF":3.1,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610784","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

Multi-party bidirectional teleportation through squeezed noisy channels

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-03-01 DOI: 10.1016/j.ijleo.2025.172274

C. Seida , A. El Allati , A. Ali , S. Al-Kuwari

引用次数: 0

Magnon blockade based on the magnon Kerr effect in a spinning microwave resonator

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-02-28 DOI: 10.1016/j.ijleo.2025.172275

Vijay Bhatt , Madhav Kumar Singh , Aranya B. Bhattacherjee , Pradip K. Jha

引用次数: 0

Central cell correction, pressure and temperature effects on the nonlinear optical rectification and second harmonic generation in a doped GaAs/GaAlAs multi-layer quantum disk

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-02-28 DOI: 10.1016/j.ijleo.2025.172273

A. Fakkahi , R. Arraoui , M. Jaouane , A. Ed-Dahmouny , A. Sali , H. Azmi , K. El-bakkari

{"title":"Central cell correction, pressure and temperature effects on the nonlinear optical rectification and second harmonic generation in a doped GaAs/GaAlAs multi-layer quantum disk","authors":"A. Fakkahi , R. Arraoui , M. Jaouane , A. Ed-Dahmouny , A. Sali , H. Azmi , K. El-bakkari","doi":"10.1016/j.ijleo.2025.172273","DOIUrl":"10.1016/j.ijleo.2025.172273","url":null,"abstract":"<div><div>Using the effective mass approximation, we investigate electron states in <span><math><mrow><mi>G</mi><mi>a</mi><mi>A</mi><mi>s</mi><mo>/</mo><msub><mrow><mi>A</mi><mi>l</mi></mrow><mrow><mi>x</mi></mrow></msub><msub><mrow><mi>G</mi><mi>a</mi></mrow><mrow><mn>1</mn><mo>−</mo><mi>x</mi></mrow></msub><mi>A</mi><mi>s</mi></mrow></math></span> core/shell MSQDs, assessing the effects of hydrostatic pressure (P) and temperature (T) on band structure and wave functions. Additionally, we examine the influence of central cell correction, pressure, and temperature on second harmonic generation (SHG) and nonlinear optical rectification (NOR). Our findings indicate that external pressure causes a decrease in energy levels, leading to a redshift in the peak positions of SHG and NOR, while external temperature increases energy levels, resulting in a blueshift. Pressure also enhances the peak intensity of SHG and NOR. However, when the pressure exceeds <span><math><mrow><mn>20</mn><mspace></mspace><mtext>Kbar</mtext></mrow></math></span>, the peak magnitude begins to decrease. Temperature, on the other hand, consistently diminishes the peak intensity. Additionally, we have discovered that both NOR and SHG can be significantly improved by selecting the appropriate type of impurities. This study highlights the potential for optimizing nonlinear optical properties through external stimuli in MSQDs, enabling new designs for photonic devices.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"327 ","pages":"Article 172273"},"PeriodicalIF":3.1,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580471","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