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Pure and Applied Optics: Journal of The European Optical Society Part A最新文献

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SELF-IMAGING OF THREE-DIMENSIONAL PHASE GRATINGS 三维相位光栅的自成像
Pure and Applied Optics: Journal of The European Optical Society Part A Pub Date : 1998-09-01 DOI: 10.1088/0963-9659/7/5/017
M. Carbon, N. Lauinger, J. Schwab
{"title":"SELF-IMAGING OF THREE-DIMENSIONAL PHASE GRATINGS","authors":"M. Carbon, N. Lauinger, J. Schwab","doi":"10.1088/0963-9659/7/5/017","DOIUrl":"https://doi.org/10.1088/0963-9659/7/5/017","url":null,"abstract":"We present a general solution of the wave equation, obtained by the four-dimensional spectral method, for diffraction of a plane monochromatic light wave by a three-dimensional (3D) phase grating layer of finite thickness. As an example, we consider spherical particles in 3D phase gratings with orthogonal and hexagonal geometry. Conditions for the strong self-imaging of a 3D grating layer and for the weak self-imaging of a two-dimensional (2D) grating are formulated and investigated. Intensity distributions for diffracted light in planes of positive and negative self-imaging and in a plane of lowest contrast are computed and compared for 2D and 3D gratings. Some aspects of the Talbot and Lau effects for 2D and 3D phase gratings are discussed.","PeriodicalId":20787,"journal":{"name":"Pure and Applied Optics: Journal of The European Optical Society Part A","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86539447","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
An intuitive introduction to the Wolf effect 对狼效应的直观介绍
Pure and Applied Optics: Journal of The European Optical Society Part A Pub Date : 1998-09-01 DOI: 10.1088/0963-9659/7/5/005
V. I. Tatarskii
{"title":"An intuitive introduction to the Wolf effect","authors":"V. I. Tatarskii","doi":"10.1088/0963-9659/7/5/005","DOIUrl":"https://doi.org/10.1088/0963-9659/7/5/005","url":null,"abstract":"","PeriodicalId":20787,"journal":{"name":"Pure and Applied Optics: Journal of The European Optical Society Part A","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78666291","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
Truncation error of the Laguerre-Gauss expansion of axially symmetric beams in terms of second-order intensity moments 轴对称梁拉盖尔-高斯展开的二阶强度矩截断误差
Pure and Applied Optics: Journal of The European Optical Society Part A Pub Date : 1998-09-01 DOI: 10.1088/0963-9659/7/5/028
R. Martínez-Herrero, P. Mejías
{"title":"Truncation error of the Laguerre-Gauss expansion of axially symmetric beams in terms of second-order intensity moments","authors":"R. Martínez-Herrero, P. Mejías","doi":"10.1088/0963-9659/7/5/028","DOIUrl":"https://doi.org/10.1088/0963-9659/7/5/028","url":null,"abstract":"From the expansion of a partially coherent axially symmetric beam in terms of Laguerre-Gauss functions, we investigate the degree of accuracy reached by approaching the exact field by means of the lower-order terms of the above series. The accuracy is evaluated analytically as a function of both the number of terms of the expansion and the (measurable) second-order intensity moments of the beam, namely, the beam width and the so-called beam quality factor .","PeriodicalId":20787,"journal":{"name":"Pure and Applied Optics: Journal of The European Optical Society Part A","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80840677","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
Talbot (1836), Montgomery (1967), Lau (1948) and Wolf (1955) on periodicity in optics Talbot (1836)， Montgomery (1967)， Lau(1948)和Wolf(1955)关于光学中的周期性
Pure and Applied Optics: Journal of The European Optical Society Part A Pub Date : 1998-09-01 DOI: 10.1088/0963-9659/7/5/018
A. Lohmann, D. Mendlovic, G. Shabtay
{"title":"Talbot (1836), Montgomery (1967), Lau (1948) and Wolf (1955) on periodicity in optics","authors":"A. Lohmann, D. Mendlovic, G. Shabtay","doi":"10.1088/0963-9659/7/5/018","DOIUrl":"https://doi.org/10.1088/0963-9659/7/5/018","url":null,"abstract":"If a wave is laterally periodic, then it is also longitudinally periodic. Nevertheless, lateral periodicity is not needed for longitudinal periodicity. Lateral quasi-periodicity is a more general case and sufficient for longitudinal periodicity. These results can be drawn from the Helmholtz equation, if the light is quasi-monochromatic and spatially coherent. For partially coherent light, similar results can be deduced from the Wolf equations. The triple correlation of a complex amplitude obeys a pair of wave equations, which are constructed exactly like the Wolf equations. Hence, the same laws on periodicity are valid. We present a historical and systematic view of all of those periodicity laws.","PeriodicalId":20787,"journal":{"name":"Pure and Applied Optics: Journal of The European Optical Society Part A","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90514505","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
A method for specifying non-radiating, monochromatic, scalar sources and their fields 一种指定非辐射、单色、标量源及其场的方法
Pure and Applied Optics: Journal of The European Optical Society Part A Pub Date : 1998-09-01 DOI: 10.1088/0963-9659/7/5/026
A. Devaney, E. A. Marengo
{"title":"A method for specifying non-radiating, monochromatic, scalar sources and their fields","authors":"A. Devaney, E. A. Marengo","doi":"10.1088/0963-9659/7/5/026","DOIUrl":"https://doi.org/10.1088/0963-9659/7/5/026","url":null,"abstract":"The theory and results concerning the class of spherically symmetric non-radiating sources and fields established in an earlier paper by Gamliel et al are generalized to the non-spherically symmetric case. A procedure is described for constructing bases for the spaces of all non-radiating sources and associated fields confined to a spherical volume. An example is presented illustrating the developed theory.","PeriodicalId":20787,"journal":{"name":"Pure and Applied Optics: Journal of The European Optical Society Part A","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91548468","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: 11
Reconstruction algorithm for diffraction tomography of diffuse photon density waves in a random medium 随机介质中漫射光子密度波的衍射层析成像重建算法
Pure and Applied Optics: Journal of The European Optical Society Part A Pub Date : 1998-09-01 DOI: 10.1088/0963-9659/7/5/023
Bingquan Chen, J. Stamnes, K. Stamnes
{"title":"Reconstruction algorithm for diffraction tomography of diffuse photon density waves in a random medium","authors":"Bingquan Chen, J. Stamnes, K. Stamnes","doi":"10.1088/0963-9659/7/5/023","DOIUrl":"https://doi.org/10.1088/0963-9659/7/5/023","url":null,"abstract":"With applications in medical diagnosis in mind we apply the theory of diffraction tomography to diffuse photon density waves in a random medium. We consider the two-and-a-half-dimensional (2.5D) problem in which a two-dimensional (2D) object is illuminated by diffuse photon density waves from a point source. Both the forward problem and the inverse problem are discussed, and a reconstruction algorithm based on the weak-scattering approximation is presented together with computer simulations.","PeriodicalId":20787,"journal":{"name":"Pure and Applied Optics: Journal of The European Optical Society Part A","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83326146","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: 12
Dynamics and dynamic light-scattering properties of Brownian particles under laser radiation pressure 激光辐射压力下布朗粒子的动力学和动态光散射特性
Pure and Applied Optics: Journal of The European Optical Society Part A Pub Date : 1998-09-01 DOI: 10.1088/0963-9659/7/5/010
Y. Harada, T. Asakura
{"title":"Dynamics and dynamic light-scattering properties of Brownian particles under laser radiation pressure","authors":"Y. Harada, T. Asakura","doi":"10.1088/0963-9659/7/5/010","DOIUrl":"https://doi.org/10.1088/0963-9659/7/5/010","url":null,"abstract":"Dynamics and light-scattering properties of Brownian particles in colloidal suspensions under the influence of the radiation pressure force of an illuminating laser beam are investigated by means of computer simulations using the Fokker-Planck equation and generalized Lorenz-Mie theory. Dynamic behaviour of the particles and a temporal correlation function of intensity fluctuations of the light scattered by these particles are calculated for various factors of particle size and power of the illuminating laser beam. Results of the simulations support the experimental observations of deformation in the temporal correlation functions of the scattered light and their dependences on the size of the particles and the power of the laser. From simulation results for the dynamics of particles, it is found that these changes in the correlation function arise from suppression of the random motion of the particles in the radial direction of the laser beam and induction of an average uniform motion in the beam propagation direction.","PeriodicalId":20787,"journal":{"name":"Pure and Applied Optics: Journal of The European Optical Society Part A","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88701841","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
Collinear diffraction of Gaussian optical beams by an acoustic pulse 声波脉冲对高斯光束的共线衍射
Pure and Applied Optics: Journal of The European Optical Society Part A Pub Date : 1998-07-01 DOI: 10.1088/0963-9659/7/4/010
V. N. Parygin, A. V. Vershoubskiy
{"title":"Collinear diffraction of Gaussian optical beams by an acoustic pulse","authors":"V. N. Parygin, A. V. Vershoubskiy","doi":"10.1088/0963-9659/7/4/010","DOIUrl":"https://doi.org/10.1088/0963-9659/7/4/010","url":null,"abstract":"The peculiarities of collinear acousto-optical diffraction of Gaussian optical beams by an acoustic pulse of finite dimensions with an arbitrary temporal envelope is investigated theoretically. The system of two first-order equations that describe the Fourier spectra of transmitted and diffracted light beams and of an acoustic pulse which are propagating in the same direction is deduced. Linear frequency modulation of an acoustic pulse is considered. The filter transmission curves during the collinear diffraction by acoustic pulses with temporal envelopes described by Gaussian and sinc(x) functions is calculated. The dependence of the acousto-optical cell transmission bandwidth on both pulse and crystal length variation is studied.","PeriodicalId":20787,"journal":{"name":"Pure and Applied Optics: Journal of The European Optical Society Part A","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1998-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81376427","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: 9
Injection-seeded optical parametric oscillator for airborne water vapour DIAL 用于机载水蒸汽DIAL的注入种子光学参量振荡器
Pure and Applied Optics: Journal of The European Optical Society Part A Pub Date : 1998-07-01 DOI: 10.1088/0963-9659/7/4/019
A. Fix, V. Weiss, G. Ehret
{"title":"Injection-seeded optical parametric oscillator for airborne water vapour DIAL","authors":"A. Fix, V. Weiss, G. Ehret","doi":"10.1088/0963-9659/7/4/019","DOIUrl":"https://doi.org/10.1088/0963-9659/7/4/019","url":null,"abstract":"Any detailed understanding of the role of water vapour in the global climate system requires precise measurements in the atmosphere with high temporal and spatial resolution. A technique that is appropriate to deliver these data is airborne differential absorption lidar (DIAL) applied in the near-infrared spectral range. In order to accurately determine atmospheric water vapour concentrations by means of the DIAL technique tunability and spectral properties of the lidar transmitter are very important. It is demonstrated that the spectral and energy requirements are achieved using optical parametric oscillators (OPOs) that are line-narrowed by the technique of injection seeding with radiation from dye lasers or from laser diodes. When the OPO is unseeded its spectral width is broad enough to suffer only negligible absorption from the absorption lines. Therefore, the unseeded OPO radiation can be used for off-line measurement, which simplifies the DIAL set-up significantly. In addition, the laser diodes were employed to measure line parameters of a selected absorption line in the near-IR. Their precise determination is important in order to make accurate DIAL measurements.","PeriodicalId":20787,"journal":{"name":"Pure and Applied Optics: Journal of The European Optical Society Part A","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1998-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89611217","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: 14
Solid-state coherent laser radar wind field measurement systems 固体相干激光雷达风场测量系统
Pure and Applied Optics: Journal of The European Optical Society Part A Pub Date : 1998-07-01 DOI: 10.1088/0963-9659/7/4/021
R. Huffaker, Paul A. Reveley
{"title":"Solid-state coherent laser radar wind field measurement systems","authors":"R. Huffaker, Paul A. Reveley","doi":"10.1088/0963-9659/7/4/021","DOIUrl":"https://doi.org/10.1088/0963-9659/7/4/021","url":null,"abstract":"Diode-pumped solid-state pulsed coherent laser radar systems have recently been developed at Coherent Technologies, Inc., for the remote measurement of atmospheric wind fields. Flashlamp-pumped systems have been utilized since 1990 for obtaining wind field measurements. These flashlamp-pumped lidar systems have been applied to wind profiling, aircraft-wake vortex measurements, airport wind shear and gust front monitoring, military cargo air drops and many other applications. The diode-pumped coherent lidar systems currently available are capable of near turnkey operation. The Tm:YAG laser transceivers operate at with output pulse energies of 1-10 mJ with PRFs of 1000 to 100 Hz, respectively. Range resolutions of 30-75 m are typical. A real-time lidar signal processor has also been developed for collecting and analysing laser radar (lidar) data. The signal processor is based on a commercial PC architecture and offers a real-time data acquisition, analysis, display, recording and playback environment. Wind measurements and overall system performance results will be presented. Wind measurement performance, for a variety of applications, is presented using the flashlamp- and diode-pumped coherent lidars including measured wind profiles from ground and on aircraft, wake vortex tracking results, and example flows over mountain terrain.","PeriodicalId":20787,"journal":{"name":"Pure and Applied Optics: Journal of The European Optical Society Part A","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1998-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91425813","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: 9
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