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Analyzing system of acoustic field 声场分析系统
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447609
A. Szpakowski, T. Pustelny
{"title":"Analyzing system of acoustic field","authors":"A. Szpakowski, T. Pustelny","doi":"10.1117/12.447609","DOIUrl":"https://doi.org/10.1117/12.447609","url":null,"abstract":"The article presents the numerical system that allows to analyze as well as to design the acoustic, multielements ultrasound heads. The system enables the modeling of complex acoustic heads that consists of arbitrary number of simply transducers. It allows to investigate theoretically of these heads as well as to calculate the spatial distributions of acoustic field. Also the diverse presentation module of acquired field characteristics is presented.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122020811","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
Wavelet analysis of low-level optical signals from Brillouin light scattering experiments 布里渊光散射实验中低能级光信号的小波分析
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447608
T. Błachowicz
{"title":"Wavelet analysis of low-level optical signals from Brillouin light scattering experiments","authors":"T. Błachowicz","doi":"10.1117/12.447608","DOIUrl":"https://doi.org/10.1117/12.447608","url":null,"abstract":"Wavelets described for the first time by Haar have been rediscovered once more some years ago thanks to efforts of large community of scientist mainly belonged to a so called applied mathematicians. However, what seems especially interesting, wavelet theory, very sophisticated from mathematical point of view, quickly has been moved to applications. From application areas we should mention signal and image compression, signal filtering, signal denoising, and transient signal analysis. The paper examines different types of wavelets. The main purpose is to find the best fitting to noised peaks measured in the low-level optical-signals Brillouin scattering experiments where single photon counting method is applied.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"158 3-4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114048295","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
Old and new ray methods in acousto-optics 声光学中的新旧射线方法
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447615
A. Korpel
{"title":"Old and new ray methods in acousto-optics","authors":"A. Korpel","doi":"10.1117/12.447615","DOIUrl":"https://doi.org/10.1117/12.447615","url":null,"abstract":"A review is presented of conventional eikonal theory, applied to acousto-optics, and of a new, generalized eikonal theory, specifically developed for Bragg diffracted rays. Examples of application of the latter are Bragg diffraction imaging and strong interaction with curved wave fronts of sound.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128124287","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
Solid state photoacoustics with laser pulse: mathematical model and experimental data filtering 激光脉冲固体光声学:数学模型和实验数据滤波
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447605
R. Bukowski, A. Domanowska, Zygmunt Kleszczewski, J. Mazur, B. Pustelny
{"title":"Solid state photoacoustics with laser pulse: mathematical model and experimental data filtering","authors":"R. Bukowski, A. Domanowska, Zygmunt Kleszczewski, J. Mazur, B. Pustelny","doi":"10.1117/12.447605","DOIUrl":"https://doi.org/10.1117/12.447605","url":null,"abstract":"The first part of this paper presents theoretical analysis of the response of typical photoacoustic cell excited with a laser pulse absorbed by the sample located inside the cell and causing changes of temperature in the whole system. Pressure response curves provide information about optical and thermal properties of the sample. System of 1D heat conduction differential equations for each region of the cell has been solved. Changes of solid sample temperature, resulting from absorption of a laser beam warm up gas surrounding the sample. Changes of gas temperature are transferred into changes of its pressure, in result of thermodynamic processes in the gas filling photoacoustic cell and are detected with a microphone in a typical photoacoustic experiment. In the second part of the article a review of application of wavelet analysis for PT signal filtering is presented. The wavelet method is compared with Fourier transform and signal subtraction and seems to be very promising.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114324352","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
Near field of light diffraction by two ultrasonic beams of frequency ratio 1:1 beyond the Raman-Nath diffraction regime 两个频率比为1:1的超声光束在拉曼-纳特衍射范围外的近场衍射
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447613
Tomasz Katkowski
{"title":"Near field of light diffraction by two ultrasonic beams of frequency ratio 1:1 beyond the Raman-Nath diffraction regime","authors":"Tomasz Katkowski","doi":"10.1117/12.447613","DOIUrl":"https://doi.org/10.1117/12.447613","url":null,"abstract":"The amplitude of near field modulation of light diffraction by two ultrasound beams, simply depends on phase between two sound beams. This paper presents suggestion for measurement of this phase.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123965580","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
Visibility methods for convenient and accurate measurement of ultrasonic wave velocity 可见的方法，方便和准确的测量超声波波速
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447596
M. Breazeale
{"title":"Visibility methods for convenient and accurate measurement of ultrasonic wave velocity","authors":"M. Breazeale","doi":"10.1117/12.447596","DOIUrl":"https://doi.org/10.1117/12.447596","url":null,"abstract":"Knowledge of the velocity of sound waves in a medium allows one to characterize many aspects of the medium. It enters directly into determination of the adiabatic compressibility, the adiabatic bulk modulus, and the acoustical dispersion. Its variation is associated with anisotropic behavior. This anisotropy is evaluated in the recently developed resonant ultrasonic spectroscopy (RUS) technique from which one can evaluate elastic moduli of anisotropic samples.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129715822","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
Photoacoustic spectra of YAG:Cr3+ and Ce3+ crystals YAG:Cr3+和Ce3+晶体的光声光谱
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447599
A. Śliwiński, M. Grinberg, A. Sikorska
{"title":"Photoacoustic spectra of YAG:Cr3+ and Ce3+ crystals","authors":"A. Śliwiński, M. Grinberg, A. Sikorska","doi":"10.1117/12.447599","DOIUrl":"https://doi.org/10.1117/12.447599","url":null,"abstract":"Photoacoustic spectroscopy method has been applied to study nonradiative processes in the excited states of Ce3+ and Cr3+ ions in YAG crystals. A comparative analysis between photoacoustic and absorption spectra has been performed.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125561735","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
Novel architecture of optical switch based on acousto-optic interaction for telecommunication networks 电信网络中基于声光交互的新型光开关结构
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447606
Y. Mevel, V. Quintard, A. Pérennou, Hongwu Li, J. Le Bihan
{"title":"Novel architecture of optical switch based on acousto-optic interaction for telecommunication networks","authors":"Y. Mevel, V. Quintard, A. Pérennou, Hongwu Li, J. Le Bihan","doi":"10.1117/12.447606","DOIUrl":"https://doi.org/10.1117/12.447606","url":null,"abstract":"We propose a novel synchronous switch for telecommunication networks at a 1.5 μm wavelength. This switch is based on the acousto-optic interaction. In this paper, we discuss about the switch's constraints to be applicable in a network, and present an acousto-optic cell architecture using planar phased array piezoelectric transducers.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131929338","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
Ultrasonic light diffraction in optically isotropic media with induced birefringence 具有诱导双折射的光学各向同性介质中的超声衍射
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447616
E. Blomme, A. Śliwiński
{"title":"Ultrasonic light diffraction in optically isotropic media with induced birefringence","authors":"E. Blomme, A. Śliwiński","doi":"10.1117/12.447616","DOIUrl":"https://doi.org/10.1117/12.447616","url":null,"abstract":"Optically isotropic media which are susceptible to acoustically induced birefringence can be used as acousto- optic polarization converters. A comparative study between fused silica and dense flint shows that at normal light incidence 52% of the light can be converted from linear to circular in the case of fused silica and only 20% in the case of dense flint. In each case the conversion appears at moderate sound amplitudes and at frequencies which are typical for the intermediate regime of diffraction. Applying oblique light incidence, most interesting effects can be obtained with fused silica at high sound frequencies which are typical for the Bragg regime of diffraction and in the neighborhood of the Bragg angle. The possibility is shown to use an AO cell fabricated of fused silica as a laser-beam splitter, converting a linearly polarized beam of light partially into a circularly polarized beam and a linearly polarized beam, the light intensity of the two beams being equal. In addition, it is seen that the temporal light intensity modulations which can be observed in the near field of the light diffracted under these specific conditions, can be understood from the polarization changes taking place.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126361584","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
Surface acoustic wave hydrogen sensor with a multilayer structure: preliminary results 具有多层结构的表面声波氢传感器:初步结果
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447610
W. Jakubik, M. Urbanczyk, M. Nadolski
{"title":"Surface acoustic wave hydrogen sensor with a multilayer structure: preliminary results","authors":"W. Jakubik, M. Urbanczyk, M. Nadolski","doi":"10.1117/12.447610","DOIUrl":"https://doi.org/10.1117/12.447610","url":null,"abstract":"Preliminary results concerning a hydrogen sensor based on a multilayer structure in a Surface Acoustic Wave dual-delay line system are presented. The sensor material consists of two layers performed in two different vapor deposition processes. The first one is a 720 nm CuPc layer, the other one -- a 20 nm thin palladium film. This structure was formed in a one of the dual-delay line system on a LiNbO3 Y-cut Z-propagation substrate. In such a multilayer structure can detect hydrogen in a medium concentration range (from 0.25% to 3% in nitrogen), even at room temperature. The sensor has a very good sensitivity, stability and is entirely reversible. The response and recovery times are very short (approximately 200 s - 800 s), which is very important from the practical point of view.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125307031","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
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