发布求助
文献互助 智能选刊 最新文献

arXiv: Optics最新文献

筛选
英文 中文
Long light storage time in an optical fiber 光在光纤中的储存时间长
arXiv: Optics Pub Date : 2020-08-27 DOI: 10.1103/PhysRevResearch.2.033320
W. Leong, Mingjie Xin, Chang Huang, Zilong Chen, Shau-Yu Lan
{"title":"Long light storage time in an optical fiber","authors":"W. Leong, Mingjie Xin, Chang Huang, Zilong Chen, Shau-Yu Lan","doi":"10.1103/PhysRevResearch.2.033320","DOIUrl":"https://doi.org/10.1103/PhysRevResearch.2.033320","url":null,"abstract":"Light storage in an optical fiber is an attractive component in quantum optical delay line technologies. Although silica-core optical fibers are excellent in transmitting broadband optical signals, it is challenging to tailor their dispersive property to slow down a light pulse or store it in the silica-core for a long delay time. Coupling a dispersive and coherent medium with an optical fiber is promising in supporting long optical delay. Here, we load cold Rb atomic vapor into an optical trap inside a hollow-core photonic crystal fiber, and store the phase of the light in a long-lived spin-wave formed by atoms and retrieve it after a fully controllable delay time using electromagnetically-induced-transparency (EIT). We achieve over 50 ms of storage time and the result is equivalent to 8.7x10^-5 dB s^-1 of propagation loss in an optical fiber. Our demonstration could be used for buffering and regulating classical and quantum information flow between remote networks.","PeriodicalId":304443,"journal":{"name":"arXiv: Optics","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130586190","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: 4
Localization precision in chromatic multifocal imaging 彩色多焦成像的定位精度
arXiv: Optics Pub Date : 2020-08-24 DOI: 10.1364/JOSAB.430594
M. J. Amin, Sabine Petry, J. Shaevitz, Haw Yang
{"title":"Localization precision in chromatic multifocal imaging","authors":"M. J. Amin, Sabine Petry, J. Shaevitz, Haw Yang","doi":"10.1364/JOSAB.430594","DOIUrl":"https://doi.org/10.1364/JOSAB.430594","url":null,"abstract":"Multifocal microscopy affords fast acquisition of microscopic 3D images. This is made possible using a multifocal grating optic, however this induces chromatic dispersion effects into the point spread function impacting image quality and single-molecule localization precision. To minimize this effect, researchers use narrow-band emission filters. However, the choice of optimal emission filter bandwidth in such systems is, thus far, unclear. This work presents a theoretical framework to investigate how the localization precision of a point emitter is affected by the emission filter bandwidth. We calculate the Cram'er-Rao lower bound for the 3D position of a single emitter imaged using a chromatic multifocal microscope. Results show that the localization precision improves with broader emission filter bandwidth due to increased photon throughput, despite a larger chromatic dispersion. This study provides a framework for optimally designing chromatic multifocal optics and serves as a theoretical foundation for interpretting results.","PeriodicalId":304443,"journal":{"name":"arXiv: Optics","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129778642","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: 3
Accurate modeling and characterization of photothermal forces in optomechanics 光力学中光热力的精确建模和表征
arXiv: Optics Pub Date : 2020-08-22 DOI: 10.1063/5.0055201
André G. Primo, Cauê M. Kersul, R. Benevides, N. Carvalho, M. Ménard, N. Frateschi, P. de Assis, G. Wiederhecker, T. P. Mayer Alegre
{"title":"Accurate modeling and characterization of photothermal forces in optomechanics","authors":"André G. Primo, Cauê M. Kersul, R. Benevides, N. Carvalho, M. Ménard, N. Frateschi, P. de Assis, G. Wiederhecker, T. P. Mayer Alegre","doi":"10.1063/5.0055201","DOIUrl":"https://doi.org/10.1063/5.0055201","url":null,"abstract":"Photothermal effects have been pointed out as prominent sources of forces in optomechanical systems, competing with the standard radiation pressure interactions. In this Letter, we derive a novel and accurate model for the prediction of photothermal forces. Based on thermodynamic considerations, we properly account for strong photothermal surface effects. As a proof-of-concept, we perform numerical and experimental tests on GaAs microdisks cavities and obtain striking agreement with our theoretical framework, revealing the importance of surface photothermal forces in microphotonic devices.","PeriodicalId":304443,"journal":{"name":"arXiv: Optics","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121285401","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: 6
FRACTAL INTERPRETATION OF BACTERIAL LIGHT HARVESTERS 细菌光收割机的分形解释
arXiv: Optics Pub Date : 2020-08-21 DOI: 10.1142/S0218348X21500249
J. Ting
{"title":"FRACTAL INTERPRETATION OF BACTERIAL LIGHT HARVESTERS","authors":"J. Ting","doi":"10.1142/S0218348X21500249","DOIUrl":"https://doi.org/10.1142/S0218348X21500249","url":null,"abstract":"Bacteria light harvesters are interpreted as Vicsek fractal, based upon their morphology, even though such fractals contain only one, or perhaps two, generations. After using fractal dimensions to describe the geometry, we progress to use connectivity matrices to make an improved description of the light harvesters and make connections with our previous studies.","PeriodicalId":304443,"journal":{"name":"arXiv: Optics","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133333486","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
Anomalous multi-ramp fractional vortex beams with arbitrary topological charge jumps 具有任意拓扑电荷跳变的反常多坡道分数涡旋光束
arXiv: Optics Pub Date : 2020-08-21 DOI: 10.1063/5.0028490
Jun Zeng, Hao Zhang, Zhiheng Xu, Chengliang Zhao, Y. Cai, G. Gbur
{"title":"Anomalous multi-ramp fractional vortex beams with arbitrary topological charge jumps","authors":"Jun Zeng, Hao Zhang, Zhiheng Xu, Chengliang Zhao, Y. Cai, G. Gbur","doi":"10.1063/5.0028490","DOIUrl":"https://doi.org/10.1063/5.0028490","url":null,"abstract":"Traditional fractional vortex beams are well-known \"jump\" beams: that is, their net topological charge jumps by unity as the effective topological charge of the source passes a half-integer value. Here, we propose an anomalous multi-ramp fractional vortex (AMRFV) beam. Unlike the traditional fractional vortex beams, an AMRFV beam can be designed to have arbitrary jumps in topological charge at any critical threshold of the source charge. We walk through some examples of AMRFV beams using simulations and present a clear interpretation of the multi-jump characteristic based on the evolution of phase singularities.","PeriodicalId":304443,"journal":{"name":"arXiv: Optics","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114687124","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: 7
Magneto-optical properties of InSb for infrared spectral filtering InSb用于红外光谱滤波的磁光特性
arXiv: Optics Pub Date : 2020-08-19 DOI: 10.1063/5.0048836
Nolan Peard, D. Callahan, J. Perkinson, Qingyang Du, N. Patel, Takian Fakhrul, J. LeBlanc, C. Ross, Juejun Hu, Christine Y. Wang
{"title":"Magneto-optical properties of InSb for infrared spectral filtering","authors":"Nolan Peard, D. Callahan, J. Perkinson, Qingyang Du, N. Patel, Takian Fakhrul, J. LeBlanc, C. Ross, Juejun Hu, Christine Y. Wang","doi":"10.1063/5.0048836","DOIUrl":"https://doi.org/10.1063/5.0048836","url":null,"abstract":"We present measurements of the Faraday effect in n-type InSb. The Verdet coefficient was determined for a range of carrier concentrations near $10^{17}$ $text{cm}^{-3}$ in the $lambda$ = 8 $mu$m - 12 $mu$m long-wave infrared regime. The absorption coefficient was measured and a figure of merit calculated for each sample. From these measurements, we calculated the carrier effective mass and illustrate the variation of the figure of merit with wavelength. A method for creating a tunable bandpass filter via the Faraday rotation is discussed along with preliminary results from a prototype device.","PeriodicalId":304443,"journal":{"name":"arXiv: Optics","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130258607","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: 2
Characterizing ultrashort laser pulses with second harmonic dispersion scans 用二次谐波色散扫描表征超短激光脉冲
arXiv: Optics Pub Date : 2020-08-19 DOI: 10.1364/JOSAB.412535
Ivan Sytcevich, Chen Guo, S. Mikaelsson, J. Vogelsang, Anne-lise Viotti, B. Alonso, R. Romero, P. Guerreiro, Í. Sola, A. L’Huillier, H. Crespo, M. Miranda, C. Arnold
{"title":"Characterizing ultrashort laser pulses with second harmonic dispersion scans","authors":"Ivan Sytcevich, Chen Guo, S. Mikaelsson, J. Vogelsang, Anne-lise Viotti, B. Alonso, R. Romero, P. Guerreiro, Í. Sola, A. L’Huillier, H. Crespo, M. Miranda, C. Arnold","doi":"10.1364/JOSAB.412535","DOIUrl":"https://doi.org/10.1364/JOSAB.412535","url":null,"abstract":"The dispersion scan (d-scan) technique has emerged as a simple-to-implement characterization method for ultrashort laser pulses. D-scan traces are intuitive to interpret and retrieval algorithms that are both fast and robust have been developed to obtain the spectral phase and the temporal pulse profile. Here, we give a review of the d-scan technique based on second harmonic generation. We describe and compare recent implementations for the characterization of few- and multi-cycle pulses as well as two different approaches for recording d-scan traces in single-shot, thus showing the versatility of the technique.","PeriodicalId":304443,"journal":{"name":"arXiv: Optics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128876398","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: 6
Hierarchical mean-fieldToperator bounds on electromagnetic scattering: Upper bounds on near-field radiative Purcell enhancement 电磁散射的分层平均场算子界:近场辐射Purcell增强的上界
arXiv: Optics Pub Date : 2020-08-18 DOI: 10.1103/physrevresearch.2.043398
S. Molesky, Pengning Chao, Alejandro W. Rodriguez
{"title":"Hierarchical mean-fieldToperator bounds on electromagnetic scattering: Upper bounds on near-field radiative Purcell enhancement","authors":"S. Molesky, Pengning Chao, Alejandro W. Rodriguez","doi":"10.1103/physrevresearch.2.043398","DOIUrl":"https://doi.org/10.1103/physrevresearch.2.043398","url":null,"abstract":"We show how the central equality of scattering theory, the definition of the $mathbb{T}$ operator, can be used to generate hierarchies of mean-field constraints that act as natural complements to the standard electromagnetic design problem of optimizing some objective with respect to structural degrees of freedom. Proof-of-concept application to the problem of maximizing radiative Purcell enhancement for a dipolar current source in the vicinity of a structured medium, an effect central to many sensing and quantum technologies, yields performance bounds that are frequently more than an order of magnitude tighter than all current frameworks, highlighting the irreality of these models in the presence of differing domain and field-localization length scales. Closely related to domain decomposition and multi-grid methods, similar constructions are possible in any branch of wave physics, paving the way for systematic evaluations of fundamental limits beyond electromagnetism.","PeriodicalId":304443,"journal":{"name":"arXiv: Optics","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116963017","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: 17
Fano-control of down-conversion in a nonlinear crystal via plasmonic–quantum emitter hybrid structures 等离子体-量子发射极杂化结构非线性晶体下转换的fano控制
arXiv: Optics Pub Date : 2020-08-17 DOI: 10.1364/josab.405637
Zafer Artvin, M. Gunay, A. Bek, M. Tasgin
{"title":"Fano-control of down-conversion in a nonlinear crystal via plasmonic–quantum emitter hybrid structures","authors":"Zafer Artvin, M. Gunay, A. Bek, M. Tasgin","doi":"10.1364/josab.405637","DOIUrl":"https://doi.org/10.1364/josab.405637","url":null,"abstract":"Control of nonlinear response of nanostructures via path interference effects, i.e., Fano resonances, has been studied extensively. In such studies, a frequency conversion process takes place near a hot spot. Here, we study the case where the frequency conversion process takes place textit{along the body of a nonlinear crystal}. Metal nanoparticle-quantum emitter dimers control the down-conversion process, taking place throughout the crystal body, via introducing interfering conversion paths. Dimers behave as interaction centers. We show that a 2 orders of magnitude enhancement is possible, on top of the enhancement due to localization effects. That is, this factor multiplies the enhancement taking place due to the field localization.","PeriodicalId":304443,"journal":{"name":"arXiv: Optics","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116359751","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: 2
Photon-avalanche-like upconversion in NdAl3(BO3)4 nanoparticles excited at 1064 nm 1064 nm激发下NdAl3(BO3)4纳米粒子的光子雪崩样上转换
arXiv: Optics Pub Date : 2020-08-09 DOI: 10.1063/5.0024619
Jefferson F. da Silva, Rodrigo F. da Silva, E. P. Santos, L. Maia, A. Moura
{"title":"Photon-avalanche-like upconversion in NdAl3(BO3)4 nanoparticles excited at 1064 nm","authors":"Jefferson F. da Silva, Rodrigo F. da Silva, E. P. Santos, L. Maia, A. Moura","doi":"10.1063/5.0024619","DOIUrl":"https://doi.org/10.1063/5.0024619","url":null,"abstract":"We report efficient non-resonant ground state excitation at 1064 nm of trivalent neodymium (Nd$^{3+}$) ions in stoichiometric neodymium aluminum borate NdAl$_3$(BO$_3$)$_4$ nanoparticles, which are crystalline and, besides the large content of Nd$^{3+}$ ions, present excellent photoluminescence properties. Up-conversions (UCs) were observed and the energy pathways identified, as starting by multi-phonon assisted ground state absorption ($^4$I$_{9/2}$-$^4$F$_{3/2}$) and excited state absorption ($^4$I$_{11/2}$-$^4$F$_{3/2}$) with the population of the $^4$I$_{11/2}$ level by thermal coupling with the ground state. The excited state $^4$I$_{11/2}$ is also populated by relaxations of the Nd$^{3+}$ ions increasing the population of the $^4$F$_{3/2}$ level. Cross-relaxation among two Nd$^{3+}$ ions ($^4$F$_{3/2}$,$^4$I$_{9/2}$)-($^4$I$_{15/2}$,$^4$I$_{15/2}$) with subsequent phonon emission leads to two ions at the $^4$I$_{11/2}$ level every iteration triggering a photon avalanche mechanism which greatly enhances the efficiency of the UCs. Ladder thermal excitation $^4$F$_{3/2}$-[$^4$F$_{5/2}$,$^2$H$_{9/2}$]-[$^4$F$_{7/2}$,$^4$S$_{3/2}$]-$^4$F$_{9/2}$ was achieved, and the ground state relaxation from these levels provided emission at 880 nm, 810 nm, 750 nm, and 690 nm, respectively. Energy transfer UCs (Auger) between Nd$^{3+}$ ions at the $^4$F$_{3/2}$ level allowed the population of the [$^2$G$_{3/2}$,$^4$G$_{7/2}$] from which relaxations to the $^4$I$_{9/2}$, $^4$I$_{11/2}$, and $^4$I$_{13/2}$ states provided emissions around 536 nm, 600 nm, and 660 nm, respectively. Associated with the nonradiative relaxations, we observed the heating of the nanoparticles (22 {deg}C to 240 {deg}C) with subsequent thermal enhancement of the frequency UCs due to the redistribution of population among coupled energy levels of the Nd$^{3+}$ ions.","PeriodicalId":304443,"journal":{"name":"arXiv: Optics","volume":"5 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132547045","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: 10
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信