Optical Engineering + Applications最新文献_第4页

Design of a visible and infrared common optical system with the same effective focal length 具有相同有效焦距的可见光和红外共光学系统的设计

Optical Engineering + Applications Pub Date : 2023-10-04 DOI: 10.1117/12.2676605

Jeeyeon Yoon, H. Heo, Gmsil Kang

引用次数: 0

Design considerations for leaf-inspired luminescent solar concentrators based on two-stage photoconversion 基于两阶段光转换的叶片启发型发光太阳能聚光器的设计考虑

Optical Engineering + Applications Pub Date : 2023-10-04 DOI: 10.1117/12.2676298

Hiroto Nishimura, K. Okada, Atsuya Suzuki, Yuta Mizuno, I. Fujieda

{"title":"Design considerations for leaf-inspired luminescent solar concentrators based on two-stage photoconversion","authors":"Hiroto Nishimura, K. Okada, Atsuya Suzuki, Yuta Mizuno, I. Fujieda","doi":"10.1117/12.2676298","DOIUrl":"https://doi.org/10.1117/12.2676298","url":null,"abstract":"Concentration factor of an optical concentrator is defined as the ratio of photon fluxes at its incident and exiting surfaces. It is equal to the product of geometric gain and optical efficiency. Scaling up a luminescent solar concentrator (LSC) increases its geometric gain, but its optical efficiency decreases due to the loss of photoluminescence (PL) photons during the concentration process. In a leaf LSC, a luminescent fiber is coupled to the side surface of a luminescent plate such that an incident photon goes through two-stage photoconversion. Its geometric gain increases drastically but the second photoconversion process decreases its optical efficiency. In experiment, a 1.5 mm-diameter fiber was placed between two 2 mm-thick luminescent plates. The plates emitted green PL photons and the fiber converted them to red PL photons. Position-dependent optical efficiency was measured by exciting a single spot at various positions on the plate with a 1 mm-diameter laser light at 450 nm. The optical efficiency averaged over the incident area increased from 0.004 to 0.007 by decreasing the lateral size of the plate from 50 mm to 10 mm. Ray tracing simulations reproduced the measurement. A clear lightguide with arc-bend couplers can guide the PL photons from multiple luminescent fibers to a photovoltaic cell. By connecting N devices, N-fold increase in geometric gain is expected while the optical efficiency remains the same. Hence, this configuration provides a solution to the trade-off between geometric gain and optical efficiency.","PeriodicalId":434863,"journal":{"name":"Optical Engineering + Applications","volume":"12671 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128667334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Linear polarizer design for application in the far-ultraviolet spectral range 应用于远紫外光谱范围的线性偏振器设计

Optical Engineering + Applications Pub Date : 2023-10-04 DOI: 10.1117/12.2676820

Mateo F. Batkis, M. Quijada, P. Scowen, R. Woodruff, L. V. Rodríguez de Marcos, J. D. Del Hoyo, Johnathan Gamaunt

{"title":"Linear polarizer design for application in the far-ultraviolet spectral range","authors":"Mateo F. Batkis, M. Quijada, P. Scowen, R. Woodruff, L. V. Rodríguez de Marcos, J. D. Del Hoyo, Johnathan Gamaunt","doi":"10.1117/12.2676820","DOIUrl":"https://doi.org/10.1117/12.2676820","url":null,"abstract":"New mission concepts that are under consideration by NASA call for the design and implementation of Far Ultraviolet (FUV) polarizer technologies that have not been developed yet. A team that includes members from the NASA Goddard Space Flight Center (GSFC), Arizona State University (ASU), and Woodruff Consulting, worked on the design and development of a polarizer design that produce very high extinction ratios in the FUV spectral range (100-200 nm). This polarizer consists of reflecting light through a series of mirrors from a combination of two silicon carbide (SiC) and two lithium fluoride (LiF) crystals positioned at angles of incidence (relative to surface normal) close to the average LiF Brewster’s angle in the FUV. The output is a highly linearly polarized beam. This polarizer concept was fabricated and tested in the existing McPherson 225 Vacuum Ultraviolet (VUV) spectrometer located in the Optics Branch at NASAGSFC. Initial testing using a MgF2 crystal at the Brewster’s angle as an analyzer has shown that this design can produce state-of-the-art extinction ratios at the Hydrogen Lyman-Alpha (Ly-α) wavelength of 121.6 nm, and that the measured extinction ratio of the two crossed polarizers, ≈114, is mostly limited by the MgF2 analyzer. A polarizer with such a performance at this wavelength has never been reported and it signifies a breakthrough in FUV polarization technology. The levels of effectiveness paired with the polarizer’s compact design allows for a new polarizer capability that would one day be implemented in a future FUV spectropolarimetry space mission.","PeriodicalId":434863,"journal":{"name":"Optical Engineering + Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130126960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lens center surface air gaps and thickness measurement in catadioptric telescope corrector lens using non-contact in situ low-coherence interferometry 非接触式原位低相干干涉法测量反射望远镜校正透镜中心表面气隙和厚度

Optical Engineering + Applications Pub Date : 2023-10-04 DOI: 10.1117/12.2676023

Yu-sheng Liu, Sheng-Feng Lin

{"title":"Lens center surface air gaps and thickness measurement in catadioptric telescope corrector lens using non-contact in situ low-coherence interferometry","authors":"Yu-sheng Liu, Sheng-Feng Lin","doi":"10.1117/12.2676023","DOIUrl":"https://doi.org/10.1117/12.2676023","url":null,"abstract":"Due to the negative diopter lens constructions of conventional remote sensing catadioptric telescopes, the corrector lens produces divergent optical property, resulting in difficulties of measuring the center thickness of the lenses and the air gaps between lens interfaces. One solution to address this issue is to incorporate a positive diopter lens on the image side during the optimization of remote sensing catadioptric telescope lenses and thus the lens center thickness as well as interlens surface air gap distances can be measured accurately from the image side by low-coherence interferometry. In this study, the lens center thickness and inter-lens center surface air gap distances of an enclosed corrector lens was measured in a single scan by using non-contact in situ measurement method of low-coherence interferometry and resulted in a significant advancement in the assessment and verification process. It facilitated the determination of whether the corrector lens met the required specifications of remote-sensing instrument during the process of assembly, integration, and successive environmental testing.","PeriodicalId":434863,"journal":{"name":"Optical Engineering + Applications","volume":"12672 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131086425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ZernikeNet: a deep learning-based approach for accurate Zernike coefficients calculation in aspheric optical components ZernikeNet:一种基于深度学习的非球面光学元件Zernike系数精确计算方法

Optical Engineering + Applications Pub Date : 2023-10-04 DOI: 10.1117/12.2676626

Shinwook Kim, Y. Youk, Goeun Kim, D. Ryu, Jeeyeon Yoon

{"title":"ZernikeNet: a deep learning-based approach for accurate Zernike coefficients calculation in aspheric optical components","authors":"Shinwook Kim, Y. Youk, Goeun Kim, D. Ryu, Jeeyeon Yoon","doi":"10.1117/12.2676626","DOIUrl":"https://doi.org/10.1117/12.2676626","url":null,"abstract":"This paper presents a new method called ZernikeNet for accurately calculating Zernike coefficients in aspheric optical components. Surface figure error (SFE) measurements obtained using interferometer often include alignment errors and low-order aberrations, such as piston, tip, tilt, and defocus, which need to be removed to effectively analyze high-order aberrations. The traditional method for removing low-order aberrations involves Zernike polynomial fitting to the SFE, but this assumes that the optical component is circular and can be decomposed into an orthogonal basis set of Zernike polynomials. However, for aspheric optical components, the orthogonality of Zernike polynomials may not hold, making it challenging to accurately represent the SFE. To address this challenge, ZernikeNet employs a deep learning-based approach, where interferometer map of the optical component is fed into a multi-layer neural network structure to output a set of 36 Zernike coefficients. The proposed deep learning network is trained using a single-shot metrology approach, where a single input interferometer map is used to generate high-accuracy Zernike coefficients through intentional overfitting. Experimental results using data from aspheric mirror show that ZernikeNet can effectively remove low-order aberrations, leaving only high-order aberrations, resulting in a low residual SFE RMS value. This method offers a significant advantage over traditional Zernike polynomial fitting approaches for optical components with complex shapes, making it a promising tool for the design and analysis of advanced optical systems.","PeriodicalId":434863,"journal":{"name":"Optical Engineering + Applications","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130401688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Atmospheric dispersion corrector for a multi-object spectroscopic mode of HROS-TMT HROS-TMT多目标光谱模式的大气色散校正器

Optical Engineering + Applications Pub Date : 2023-10-04 DOI: 10.1117/12.2677192

Manjunath Bestha, Amirul Hasan, Devika K. Divakar, A. Surya, S. S, T. Sivarani, Ajin Prakash, P. M, S. Yadav

引用次数: 0

Flat surface measurement using laser trackers and SMRs on motorized stages 在机动平台上使用激光跟踪仪和smr进行平面测量

Optical Engineering + Applications Pub Date : 2023-10-04 DOI: 10.1117/12.2676761

D. Ryu, Jong-Yeon Choe, Y. Youk, Goeun Kim, E. Lee

{"title":"Flat surface measurement using laser trackers and SMRs on motorized stages","authors":"D. Ryu, Jong-Yeon Choe, Y. Youk, Goeun Kim, E. Lee","doi":"10.1117/12.2676761","DOIUrl":"https://doi.org/10.1117/12.2676761","url":null,"abstract":"In this paper, we propose a noncontact, high-precision method for measuring the flat surface of large-scale optics using laser trackers and spherically mounted reflectors (SMRs) placed on motorized stages. Accurate measurement of surface flatness is critical for the development of optical systems, especially for aligning large-scale astronomical telescopes and space-based instruments. The proposed method can capture high-resolution surface figure of large flat areas, generating dense spatial point clouds. The measurement system consists of laser trackers, SMRs on two-dimensional motorized stages, and a flat mirror. The laser tracker directly measures the position of an SMR and captures an image of the SMR through the reflection from a flat mirror. The motorized stage enables precise and repeatable movement of the optics, allowing for the measurement of the local slope and complete surface figure of the flat mirror. To demonstrate the effectiveness of the proposed method, we conducted a series of measurements using a large flat mirror. The results show that the proposed method can measure the surface figure of a flat mirror with six-degrees-of-freedom, accuracy, and precision. The measurement data obtained from the laser tracker and SMR were compared with those obtained using an interferometer-based measurement system with a parabolic mirror, and the results were found to be in excellent agreement. The proposed method offers a noncontact, high-precision solution for measuring the surface figure of large flat areas and has the potential to significantly improve the manufacturing and testing of large optical systems for astronomy and space-based applications.","PeriodicalId":434863,"journal":{"name":"Optical Engineering + Applications","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116652009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

3D FDTD analysis of cross-talk in pixelated PA-LCos devices: impact of fill factor and size pixel on S2 and S3 parameters 像素化PA-LCos器件串扰的三维时域有限差分分析:填充因子和像素大小对S2和S3参数的影响

Optical Engineering + Applications Pub Date : 2023-10-04 DOI: 10.1117/12.2676321

J. Francés, Adriana Rosalía Sánchez, A. Márquez, S. Gallego, M. Álvarez, I. Pascual, A. Beléndez

{"title":"3D FDTD analysis of cross-talk in pixelated PA-LCos devices: impact of fill factor and size pixel on S2 and S3 parameters","authors":"J. Francés, Adriana Rosalía Sánchez, A. Márquez, S. Gallego, M. Álvarez, I. Pascual, A. Beléndez","doi":"10.1117/12.2676321","DOIUrl":"https://doi.org/10.1117/12.2676321","url":null,"abstract":"In the last decades, new technology fabrication developments have permitted increased resolution and reduced pixel size of Liquid crystal on silicon (LCoS) microdisplays. However, the pixel size reduction triggers the microdisplay performance degradation due to different phenomena, such as the cross-talk between neighbouring pixels, fringing fields, out-of-plane reorientation of the liquid crystal director, and diffraction effects due to the pixelated grid pattern of the microdisplay. In this work, a full 3D simulation model has been applied to predict the liquid crystal director orientation as a function of space and external voltage. The scheme here considered provides the complete vectorial information of the electromagnetic field distribution produced by one single pixel illuminated by plane waves circularly polarised. This analysis is carried on for several pixel and gap sizes for different external voltages. This research focuses on S2 and S3 Stokes parameters and how their behaviour is affected due to the cross-talk phenomena previously presented.","PeriodicalId":434863,"journal":{"name":"Optical Engineering + Applications","volume":"55 48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133869002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of a table-top surface inspection system based on phase-measuring deflectometry 基于相位测量偏转计的台式表面检测系统的研制

Optical Engineering + Applications Pub Date : 2023-10-04 DOI: 10.1117/12.2676601

S. Hyun, Kye S. Lee, M. Bog

引用次数: 0

Vein pattern classification using convolutional neuronal network and moment invariants 基于卷积神经网络和矩不变量的静脉模式分类

Optical Engineering + Applications Pub Date : 2023-10-04 DOI: 10.1117/12.2677811

Ana Teresa Vargas Barona, María Angélica Espejel Rivera, R. Castro-Ortega, C. Toxqui-Quitl, A. Padilla-Vivanco

引用次数: 0