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Investigation of the optical Performance of Variable-Shaped Metallic Nanoparticles on GaAs using FEM for Photovoltaic Applications 8th

Investigation of the Optical Performance of Variable-Shaped ...

引用

8th International conference on Manufacturing, Material and Metallurgical engineering, ICMMME 2024

作者： Singh, Sadhna Samajdar, D.P. Dutta, Koushik Department of Electronics and Communication Engineering PDPM Indian Institute of Information Technology Design and Manufacturing Jabalpur482005 India

ISBN: (纸本)9783031782947

Metallic nanoparticle (MNP)-based solar cells (SCs) are considered promising candidates due to their enhanced optical absorption and substantial improvement in efficiency. One of the primary elements that significantly impacts the efficiency of SCs is the optical losses resulting from the reflection of incoming light incident on the surface of the SC. these optical losses can be reduced by using different MNPs, like Ti, Au, and Ag. In this work, we have introduced different shapes of these MNPs such as spherical, cylindrical, cubical, and inverted truncated cone (ITC), which are then placed over ultra-thin GaAs solar cells (SC). In order to achieve the best possible design requirements for MNPs-based GaAs SC, the finite element approach is used. Compared to the planar structure, the cubical structure of Ti MNP has demonstrated improved optical capabilities due to its inherent anti-reflection properties. the optimization of the geometrical parameters such as diameter, edge length, or base diameter of different shaped MNPs is attained in terms of the value of optical current density, Jopt. We found that the Ti MNP, having an edge length of 120 nm, has the highest Jopt and highest average absorption of 29.23 mA/cm2 and 92.33%, respectively, among various MNPs, such as Au, Ag, and Ti. the optimum Jopt achieved for the cubical Ti MNP is approximately 46.59% higher than that of the planar GaAs structure while exhibiting a reduction of 86.75% in reflection losses. © the Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： Metal nanoparticles

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Research on Intelligent Monitoring Terminal of Transmission Line Hidden Target Based on Multi-dimensional optical Information

Research on Intelligent Monitoring Terminal of Transmission ...

引用

IEEE Information Technology and Mechatronics engineering conference (ITOEC)

作者： Yuanlong Peng Jiaqi Shi Jianing Niu Mingyang Shi Longchuan Yan Zhiyu Chen Yan Li Danhua Cao State Grid Information and Telecommunication Branch Beijing China School of Optical and Electronic Information Huazhong University of Science and Technology Hubei China

ISBN: (数字)9798331529482

ISBN: (纸本)9798331529499

the construction and maintenance of transmission lines are critical to ensuring national energy security. current methods for detecting hidden targets in transmission lines involve uploading massive amounts of images from various monitoring points to a centralized video platform and then carrying out the algorithmic recognition, which demands an extremely high computational load on the platform. therefore, designing edge-intelligent algorithm deployments at the monitoring terminals can effectively distribute the load, reduce the redundancy of uploaded images, and lower the computational burden and power consumption of the central platform. To ensure the safe and stable operation of transmission lines, this paper proposed a novel intelligent monitoring terminal based on multi-dimensional optical information fusion. TensorRT inference optimization engine, CUDA programming model and parameter quantization method are used to achieve edge deployment and optimization of hidden target detection algorithm on the terminal. Results show that the intelligent surveillance terminal effectively balances the contradictory relationship between model accuracy, computational ability and power consumption, and ultimately improves the inference speed while maintaining the accuracy.

关键词： optical polarization Power transmission lines Power demand Quantization (signal) optical design Computational modeling Programming optical imaging Power grids Optimization

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Compact finger imager

Compact finger imager

引用

8th conference on current developments in optical design and optical engineering

作者： Clark, PP Goodman, DS Plummer, WT Polaroid Corp Dept Opt Engn Cambridge MA 02139 USA

ISBN: (纸本)0819432652

We present the design of a compact, low-cost finger imager, to be used for enrolling and recognizing individuals based upon their finger ridge patterns. the optical system employs viewing beyond the critical angle and darkfield illumination for maximum image contrast. the optical system is afocal and telecentric, achieving corrected distortion with oblique viewing.

关键词： optical system design biometrics fingerprint plastic aspheric lenses

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Novel design concepts for UV laser beam shaping

Novel design concepts for UV laser beam shaping

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8th conference on current developments in optical design and optical engineering

作者： Bernges, J Unnebrink, L Henning, T Kreutz, EW Poprawe, R Rhein Westfal TH Aachen Lehrstuhl Lasertech D-52074 Aachen Germany

ISBN: (纸本)0819432652

Recent developments in the field of high transmitting beam shaping optics for material processing are presented. Central parts of these optics are non-rotationally symmetric optical elements (NOEs). Advanced design principles for NOEs are presented. An optical setup containing a NOE and a system for the adaptation of the spatial coherence properties of excimer lasers to the processing requirements are presented together with beam diagnosis and material processing results. In comparison to results obtained earlier a largely increased beam shaping performance is demonstrated.

关键词： excimer laser non-rotationally symmetric optical elements beam shaping transversal degree of coherence optical systems

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optical design of the Next Generation Sky Survey (NGSS) Telescope

Optical design of the Next Generation Sky Survey (NGSS) Tele...

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8th conference on current developments in optical design and optical engineering

作者： Chrisp, MP Ball Aerosp & Technol Corp Boulder CO 80301 USA

ISBN: (纸本)0819432652

the Next Generation Sky Survey (NGSS) Telescope is a spaceborne cryogenic optical telescope with four channels covering the wavelength range 3.5 to 23 microns. the 0.5 m aperture telescope is based on a modified three mirror afocal design, with a scan mirror at the exit pupil compensating for the spacecraft motion. After the scan mirror, the light is spectrally split and focussed by three refractive camera systems onto four detector arrays. the nominal optical design exceeds the requirement of diffraction limited performance at 8 microns wavelength over the 1 degree by 0.5 degree field of regard.

关键词： optical design telescope infrared mirrors space cryogenic

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SURFACE CONTRIBUTIONS OF thE WAVE ABERRATIONS UP TO thE 8th DEGREE

SURFACE CONTRIBUTIONS OF THE WAVE ABERRATIONS UP TO THE 8TH ...

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5th CONF ON current developments IN optical design AND optical engineering

作者： AURIN, FA Carl Zeiss Postfach 1369 Oberkochen D-7082 Germany

ISBN: (纸本)0819406554

Quantities which are necessary for ray tracing in any case are used to calculate the geometrical and the optical path difference. Proceeding from the optical path difference the coefficients of the power series of the wave aberration function are fitted by a method of least squares up to the 8th degree. For a triplet the surface contributions of the different terms of the aberration function and their sums are represented graphically and numerically. Different checks of validity show not only the accuracy but also the uncertainty of the method in each special case. © 1991 SPIE. All rights reserved.

关键词： Aberrations

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optical tiling for wide field-of-view head-mounted displays

Optical tiling for wide field-of-view head-mounted displays

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8th conference on current developments in optical design and optical engineering

作者： Hoppe, MJ Melzer, JE Kaiser Electroopt Inc Display Syst Engn Dept Carlsbad CA USA

ISBN: (纸本)0819432652

the design of a wide field-of-view head-mounted display (HMD) is very challenging. Unfortunately, traditional design methods produce low-resolution imagery that is unacceptable for some tasks. One method of addressing this challenge is to optically tile several smaller field-of-view displays to form a single, wide field-of-view, high-resolution image. this paper will address design issues specific to optically tiled systems including optical performance, seam placement and binocular rivalry.

关键词： optical tiling head-mounted display HMD wide field-of-view VIM (R) optical collimator

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Aberrations of perturbed and unobscured optical systems

Aberrations of perturbed and unobscured optical systems

引用

8th conference on current developments in optical design and optical engineering

作者： Agurok, I Phys Opt Corp Torrance CA 90505 USA

ISBN: (纸本)0819432652

the double expansion of the wavefront deformation in Zernike polynomials over the pupil and the field-of-view coordinates is a powerful tool for lens design, testing, and alignment. It provides a compact description of the wavefront deformation of perturbed and unobscued optical systems over the field-of-view. the integral of the mean-square wavefront deformation over the field-of-view is simply the sum of the products of the norms of the polynomials and the squared global coefficients. Eight or ten global coefficients can provide a comprehensive centered system description. Only fourteen main additional global coefficients is sufficient for the description of perturbed and unobscured optical systems.

关键词： double expansion of wavefront deformation perturbed and unobscured systems

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optical design of high aperture compact relay systems

Optical design of high aperture compact relay systems

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8th conference on current developments in optical design and optical engineering

作者： Nikolov, ID Univ Sofia Opt & Spect Dept BG-1126 Sofia Bulgaria

ISBN: (纸本)0819432652

Some results obtained in the realization of compact relay systems design are presented. Four optical configurations have been analyzed. Two symmetrical schemes were examined having field Smith's lenses for a image scaling of-ix. the achieved numerical aperture is up to 0.35 and the MTFs curves are at 40 cycles1/mm for a contrast ratio of 0.2. the third design has a large field of 40 mm but its F-number is about F/4.5. the last relay system is unsymmetrical. the scaling is 2x and the image field exceeds 50 mm. the aberration balancing results and the optical systems performance are illustrated.

关键词： optical design relay systems high-speed optics wide-angle lenses

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Rotating prisms scanning system to equip a NFOV camera lens

Rotating prisms scanning system to equip a NFOV camera lens

引用

8th conference on current developments in optical design and optical engineering

作者： Curatu, E Chevrette, P StGermain, D Natl Opt Inst St Foy PQ G1P 4N8 Canada

ISBN: (纸本)0819432652

this paper presents the results given by the nominal design and tolerance analysis of a narrow-field-of-view camera lens equipped with a rotating prism scanning system. the first aspects taken into consideration have been the compensation of the chromatic aberration, distortion reduction, and the correlation between depth-of-field and lens resolution. then, a rigorous approach to determine the relationship between the field-of-regard direction and the prism orientations is discussed. Finally, the tolerance analysis results give the predictable pointing direction precision as function of the system tolerances.

关键词： rotating prisms Risley prisms scanning system

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