arXiv: Optics最新文献_第4页

Directional emission of down-converted photons from a dielectric nanoresonator 电介质纳米谐振器下转换光子的定向发射

arXiv: Optics Pub Date : 2020-11-16 DOI: 10.1103/PHYSREVA.103.043703

A. Nikolaeva, K. Frizyuk, N. Olekhno, A. Solntsev, M. Petrov

引用次数: 10

Lossless Complex-Valued Optical-Field Control with Compound Metaoptics 复合元光学的无损复值光场控制

arXiv: Optics Pub Date : 2020-11-14 DOI: 10.1103/PhysRevApplied.15.054039

Brian O. Raeker, A. Grbic

引用次数: 7

Enantioselective orientation of chiral molecules induced by terahertz pulses with twisted polarization 扭曲极化太赫兹脉冲诱导手性分子的对映选择性取向

arXiv: Optics Pub Date : 2020-11-12 DOI: 10.1103/PHYSREVRESEARCH.3.013249

I. Tutunnikov, Long Xu, R. Field, K. Nelson, Y. Prior, I. Averbukh

引用次数: 10

Polarization-controlled selective excitation of Mie resonances in a dielectric nanoparticle on a coated substrate 涂覆基板上介电纳米粒子中Mie共振的偏振控制选择性激发

arXiv: Optics Pub Date : 2020-11-12 DOI: 10.1103/physrevb.102.245406

D. Pidgayko, Z. Sadrieva, K. Ladutenko, A. Bogdanov

引用次数: 4

Strong spatial dispersion in time-modulated dielectric media 时间调制介质中的强空间色散

arXiv: Optics Pub Date : 2020-11-09 DOI: 10.1103/physrevb.102.214202

D. Torrent

引用次数: 16

Fundamental Bounds on the Precision of Classical Phase Microscopes 经典相显微镜精度的基本界限

arXiv: Optics Pub Date : 2020-11-09 DOI: 10.1103/PhysRevApplied.15.024047

D. Bouchet, Jonathan Dong, Dante Maestre, T. Juffmann

引用次数: 5

MENP: an open-source MATLAB implementation of multipole expansion for nanophotonics MENP:纳米光子学多极扩展的开源MATLAB实现

arXiv: Optics Pub Date : 2020-11-07 DOI: 10.1364/OSAC.425189

Tatsuki Hinamoto, M. Fujii

{"title":"MENP: an open-source MATLAB implementation of multipole expansion for nanophotonics","authors":"Tatsuki Hinamoto, M. Fujii","doi":"10.1364/OSAC.425189","DOIUrl":"https://doi.org/10.1364/OSAC.425189","url":null,"abstract":"In modern nanophotonics, multipolar interference plays an indispensable role to realize novel optical devices represented by metasurfaces with unprecedented functionalities. Not only to engineer sub-wavelength structures that constitute such devices but also to realize and interpret unnatural phenomena in nanophotonics, a program that efficiently carries out multipole expansion is highly demanded. MENP is a MATLAB program for computation of multipole contributions to light scattering from current density distributions induced in nanophotonic resonators. The main purpose of MENP is to carry out post-processing of a rigid multipole expansion for full-field simulations which in principle provide the information of all near- and far-field interactions (e.g. as a total scattering cross section). MENP decomposes total scattering cross sections into partial ones due to electric and magnetic dipoles and higher-order terms based on recently developed exact multipole expansion formulas. We validate the program by comparing results for ideal and realistic nanospheres with those obtained with the Mie theory. We also demonstrate the potential of MENP for analysis of anapole states by calculating the multipole expansion under the long-wavelength approximation which enables us to introduce toroidal dipole moments.","PeriodicalId":304443,"journal":{"name":"arXiv: Optics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128422336","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: 16

DESIGN OF ULTRA-HIGH GAIN OPTICAL MICRO-AMPLIFIERS VIA SMART NON-LINEAR WAVE MIXING 基于智能非线性混频的超高增益光学微放大器设计

arXiv: Optics Pub Date : 2020-11-06 DOI: 10.2528/pierb20102206

Ozum Emre Acsirim, Alim Yolalmaz

{"title":"DESIGN OF ULTRA-HIGH GAIN OPTICAL MICRO-AMPLIFIERS VIA SMART NON-LINEAR WAVE MIXING","authors":"Ozum Emre Acsirim, Alim Yolalmaz","doi":"10.2528/pierb20102206","DOIUrl":"https://doi.org/10.2528/pierb20102206","url":null,"abstract":"Optical amplification of the input wave by mixing the pump wave within a nonlinear interaction medium offers high gain for a variety of applications. In real life studies, the interaction mediums which allow the optical amplification of the input wave have many resonance frequencies. However, the computational expense for tuning the pump frequency to yield the optical amplification of the input wave increases with the number of resonance frequencies within the interaction mediums. Here, we present a Fletcher-Reeves based algorithm for parametric amplification in micro-resonators having multiple resonance frequencies. Using our novel mathematical formulations, we obtained a gain of 4.7x107 for the input wave at 640 THz and a gain of 1.5x108 for the input wave at 100 THz within the micro-resonators. Moreover, the performance of our algorithm is verified by the well know mathematical expression, and we achieved more than 99% accuracy in computation of optical amplification. To our knowledge, this is the first study where Fletcher-Reeves algorithm is used for the parametric amplification. Our methodology can be accompanied to design optical parametric amplifiers for applications of high-speed optical communications, photonic circuits, and ultrafast lasers.","PeriodicalId":304443,"journal":{"name":"arXiv: Optics","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128385163","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

Arbitrary polarization-independent backscattering or reflection by rotationally symmetric reciprocal structures 任意偏振无关的后向散射或旋转对称互反结构的反射

arXiv: Optics Pub Date : 2020-11-02 DOI: 10.1103/PHYSREVB.103.045422

Weijin Chen, Qingdong Yang, Yuntian Chen, Wei Liu

{"title":"Arbitrary polarization-independent backscattering or reflection by rotationally symmetric reciprocal structures","authors":"Weijin Chen, Qingdong Yang, Yuntian Chen, Wei Liu","doi":"10.1103/PHYSREVB.103.045422","DOIUrl":"https://doi.org/10.1103/PHYSREVB.103.045422","url":null,"abstract":"We study the backward scatterings of plane waves by reciprocal scatterers and reveal that $n$-fold ($ngeq3$) rotation symmetry is sufficient to secure invariant backscattering for arbitrarily-polarized incident plane waves. It is further demonstrated that the same principle is also applicable for infinite periodic structures in terms of reflection, which simultaneously guarantees the transmission invariance if there are neither Ohmic losses nor extra diffraction channels. At the presence of losses, extra reflection symmetries (with reflection planes either parallel or perpendicular to the incident direction) can be incorporated to ensure simultaneously the invariance of transmission and absorption. The principles we have revealed are protected by fundamental laws of reciprocity and parity conservation, which are fully independent of the optical or geometric parameters of the photonic structures. The optical invariance obtained is intrinsically robust against perturbations that preserve reciprocity and the geometric symmetries, which could be widely employed for photonic applications that require stable backscatterings or reflections.","PeriodicalId":304443,"journal":{"name":"arXiv: Optics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129526239","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: 1

Spectral splitting and concentration of broadband light using neural networks 利用神经网络进行宽带光的光谱分裂和集中

arXiv: Optics Pub Date : 2020-11-01 DOI: 10.1063/5.0042532

Alim Yolalmaz, E. Yüce

{"title":"Spectral splitting and concentration of broadband light using neural networks","authors":"Alim Yolalmaz, E. Yüce","doi":"10.1063/5.0042532","DOIUrl":"https://doi.org/10.1063/5.0042532","url":null,"abstract":"Compact photonic elements that control both the diffraction and interference of light offer superior performance at ultra-compact dimensions. Unlike conventional optical structures, these diffractive optical elements can provide simultaneous control of spectral and spatial profile of light. However, the inverse-design of such a diffractive optical element is time-consuming with current algorithms, and the designs generally lack experimental validation. Here, we develop a neural network model to experimentally design and validate SpliCons; a special type of diffractive optical element that can achieve simultaneous concentration and spectral splitting of broadband light. We use neural networks to exploit nonlinear operations that result from wavefront reconstruction through a phase plate. Our results show that the neural network model yields enhanced spectral splitting performance for phase plates with quantitative assessment compared to phase plates that are optimized via local search optimization algorithm. The capabilities of the phase plates optimized via neural network are experimentally validated by comparing the intensity distribution at the output plane. Once the neural networks are trained, we manage to design SpliCons with 96.8% accuracy within 2 seconds, which is orders of magnitude faster than iterative search algorithms. We openly share the fast and efficient framework that we develop in order to contribute to the design and implementation of diffractive optical elements that can lead to transformative effects in microscopy, spectroscopy, and solar energy applications.","PeriodicalId":304443,"journal":{"name":"arXiv: Optics","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133640671","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: 5