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Acousto-Optics and Applications最新文献

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Nonlinear interaction in the vicinity of an underwater source of finite amplitude wave with noncontinuous radiating surface 非连续辐射面有限振幅水下波源附近的非线性相互作用
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447603
G. Grelowska, E. Kozaczka
{"title":"Nonlinear interaction in the vicinity of an underwater source of finite amplitude wave with noncontinuous radiating surface","authors":"G. Grelowska, E. Kozaczka","doi":"10.1117/12.447603","DOIUrl":"https://doi.org/10.1117/12.447603","url":null,"abstract":"The paper contains results of experimental investigations of the pressure field distribution in the vicinity of underwater sources of non-continuous radiating surface. Two sources were examined, each in form of 16-element array. The arrays are composed of circular piezoceramic pistons of the same dimensions and radiating properties. The elements of the first source are pistons of 25-mm-diam and resonant frequency equal to 600 kHz. The second of examined sources is using piezoelements of 10-mm-diam and resonant frequency of 1.5 MHz. Shown and characterized is the impact of the discontinuity of radiating surface on the nonlinear distortion process in the vicinity of the multi-element source.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"17 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":"129358363","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
Detection of mechanical vibrations by magnetic resonance: elastomagnetic resonance spectroscopy (EMRS) 用磁共振检测机械振动:弹性磁共振波谱
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447611
C. Lewa, N. Baril, J. Franconi, J. D. de Certaines, P. Canioni, E. Thiaudière
{"title":"Detection of mechanical vibrations by magnetic resonance: elastomagnetic resonance spectroscopy (EMRS)","authors":"C. Lewa, N. Baril, J. Franconi, J. D. de Certaines, P. Canioni, E. Thiaudière","doi":"10.1117/12.447611","DOIUrl":"https://doi.org/10.1117/12.447611","url":null,"abstract":"The previously tested MRI methods quantitative measurement of mechanical properties required a synchronization between MRI acquisition pulses and mechanical stimulation. Two new unsynchronized methods: (1) with Bo static field gradient Go and (2) with a B1 radio-frequency field gradient G1 are proposed. The methods are usable without any a- priori knowledge of the intensity, direction and frequency of the mechanical waves. A specifically modified SPAMM sequence has been used, operating on a 0.2 T MRI system. The proposed methods are sufficient fast (acquisition time less than 5 seconds) for a routine clinical use.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"788 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":"116178617","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
Analytical solutions for 3D acousto-optic interaction within the numerical aperture area 数值孔径区域内三维声光相互作用的解析解
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447598
D. Ngambia Mbamou, G. Mueller, G. Brunk
{"title":"Analytical solutions for 3D acousto-optic interaction within the numerical aperture area","authors":"D. Ngambia Mbamou, G. Mueller, G. Brunk","doi":"10.1117/12.447598","DOIUrl":"https://doi.org/10.1117/12.447598","url":null,"abstract":"This paper presents analytical solutions to the three- dimensional acousto-optic interaction problem. The analytical results are presented for safely combined applications of ultrasound and laser radiation in medicine.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"147 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":"116909381","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
Split-step Fourier method for rotation-cylindrical acousto-optic interaction within the numerical aperture area 数值孔径区域内旋转-圆柱声光相互作用的分步傅立叶方法
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447602
D. Ngambia Mbamou, G. Mueller, G. Brunk
{"title":"Split-step Fourier method for rotation-cylindrical acousto-optic interaction within the numerical aperture area","authors":"D. Ngambia Mbamou, G. Mueller, G. Brunk","doi":"10.1117/12.447602","DOIUrl":"https://doi.org/10.1117/12.447602","url":null,"abstract":"In this paper the split-step Fourier method is used to find a solution to the rotation-cylindrical acousto-optic interaction problem. The numerical results are applied to practical examples which could help to answer the safety question during a combined application of ultrasound for selective tissue excision and Nd:YAG-laser for coagulation of bleeding tissue in surgical therapy.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"3 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":"121883032","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
Overview of acousto-optic bistability, chaos, and logical applications 声光双稳、混沌和逻辑应用概述
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447617
Monish R. Chatterjee, Erol Sonmez
{"title":"Overview of acousto-optic bistability, chaos, and logical applications","authors":"Monish R. Chatterjee, Erol Sonmez","doi":"10.1117/12.447617","DOIUrl":"https://doi.org/10.1117/12.447617","url":null,"abstract":"An overview is presented of the key results in the field of acousto-optic bistability in the past two decades. It is shown that the basic acousto-optic bistable device may be described as a nonlinear dynamical system which satisfies a quadratic map. Thereafter, details are presented of several analytical methods, computer modeling approaches, including the SPICE circuit modeling technique, and experiments that have been used to understand the phenomenon. Extensions to logical and digital applications are also discussed.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"14 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":"117054177","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
Elastic anisotropy of acousto-optic interaction medium 声光相互作用介质的弹性各向异性
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447607
V. Voloshinov
{"title":"Elastic anisotropy of acousto-optic interaction medium","authors":"V. Voloshinov","doi":"10.1117/12.447607","DOIUrl":"https://doi.org/10.1117/12.447607","url":null,"abstract":"The paper examines regular trends of light diffraction by ultrasound propagating in media possessing anisotropy of elastic properties. The analysis is carried out on base of the single crystals of tellurium dioxide TeO2, calomel Hg2Cl2 and tellurium Te. The particular crystalline media have been chosen due to the extremely large angles between phase V and group Vg velocities of the acoustic waves in the materials. In X-Y planes of the crystals, the obliquity angle may exceed the value φ > 45°. It is shown that the strong anisotropy of the elastic properties influences on the process of light and sound interaction. In the case of Bragg regime of light diffraction, the diffracted beam intensity I1 and the acoustic frequency bandwidth of diffraction Δf in the anisotropic crystals differ from the corresponding efficiency and the bandwidth in glass materials. The paper considers features of the acousto-optic interaction originating from the presence of the elastic anisotropy.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"10 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":"121157512","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
Gaussian beam phase change and deflection in Raman-Nath interaction Raman-Nath相互作用中的高斯光束相变和偏转
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447601
R. Bukowski
{"title":"Gaussian beam phase change and deflection in Raman-Nath interaction","authors":"R. Bukowski","doi":"10.1117/12.447601","DOIUrl":"https://doi.org/10.1117/12.447601","url":null,"abstract":"In this work there is presented a description of the Gaussian light beam diffraction on the planar ultrasound wave in the Raman-Nath region by the complex optical rays method. The case of the perpendicular light beam incidence (i.e. its axis relatively to the direction of propagation of the ultrasound beam fulfilled the acoustics buffer of Δz width was considered. Final analytical formulae gives a possibility analyze the influence of such parameters as: a size and position of the Gaussian beam waist, a laser-screen (detector) distance, a position of the ultrasound beam and Raman-Nath parameter value on diffraction pattern. It has been proved that in some cases the diffraction beams have a fine structure. The light beam deflection contribution to the diffraction pattern was taken into account. Obtained analytical formulas were illustrated by some graphs of the light intensity distributions in beams diffracted on ultrasound wave propagated in fused quartz.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"152 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":"127029462","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
Polarization effects at acousto-optic interaction in anisotropic medium 各向异性介质中声光相互作用的偏振效应
Acousto-Optics and Applications Pub Date : 1995-10-04 DOI: 10.1117/12.222778
V. Balakshy, G. Gondek, Tomasz Katkowski, I. Krylov, P. Kwiek, A. Śliwiński
{"title":"Polarization effects at acousto-optic interaction in anisotropic medium","authors":"V. Balakshy, G. Gondek, Tomasz Katkowski, I. Krylov, P. Kwiek, A. Śliwiński","doi":"10.1117/12.222778","DOIUrl":"https://doi.org/10.1117/12.222778","url":null,"abstract":"Polarization effects that arise during diffraction of an arbitrarily polarized light by an acoustic wave in an anisotropic medium are studies both theoretically and experimentally. Peculiarities of these effects in the cases of isotropic and anisotropic scattering of the light are considered in detail. Results of polarization state measurements performed with a paratellurite acousto-optic cell in the zeroth order of diffraction are presented as well.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"162 1‐7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120836493","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
Use of acousto-optical resonant conditions in GaAs and InP for the creation of high-efficiency 2-GHz bandwidth Bragg cells 在GaAs和InP中使用声光谐振条件来创建高效率的2 ghz带宽Bragg细胞
Acousto-Optics and Applications Pub Date : 1995-10-04 DOI: 10.1117/12.222744
V. Petrov, Boris Gurev, V. Kolosov, Sergey Kuryshov, S. Lapin, J. Sapriel
{"title":"Use of acousto-optical resonant conditions in GaAs and InP for the creation of high-efficiency 2-GHz bandwidth Bragg cells","authors":"V. Petrov, Boris Gurev, V. Kolosov, Sergey Kuryshov, S. Lapin, J. Sapriel","doi":"10.1117/12.222744","DOIUrl":"https://doi.org/10.1117/12.222744","url":null,"abstract":"We demonstrated in this work the possibility of application of the effect of resonant acousto- optical (AO) interaction for the creation of wide band and high efficiency Bragg cells on gigahertz frequencies. The main principle of this effect consists in heat there exists the optimum photon energy (very close to the band gap of semiconductor sample) where the optical absorption is still not big enough but the figure of merit already several times higher in comparison with one when the photon energy is fat from the band gap. We have shown theoretically that the optimization of multilayer thin film piezoelectric transducers allows to create AO Bragg cells (deflectors and modulators) working in resonant conditions and having very high diffraction efficiency (more than 10%) and very wide frequency band (up to 2 GHz). This optimization based on the use of the acoustical matching scheme-asynchronous transform, analogous to one in electrotechnics. Experimental devices represent the cells with crystal plates of GaAs and InP of (100) and (110) cut having the multilayer thin film transducer on the butt-end that has been matched with microstrip transmission line. Characteristics of created AO cells reach: 10% per 1 Watt of electrical power; 2 GHz frequency band with 8 MHz frequency resolution. The obtained experimental results show a good agreement with theoretical predictions.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"06 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127200775","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
Preliminary investigation of the degradation of motor oil by photoacoustic spectroscopy 光声光谱法对机油降解的初步研究
Acousto-Optics and Applications Pub Date : 1995-10-04 DOI: 10.1117/12.222759
J. Motylewski, Janusz W. Szurkowski, B. Wiślicki, Tomasz Zmierczak
{"title":"Preliminary investigation of the degradation of motor oil by photoacoustic spectroscopy","authors":"J. Motylewski, Janusz W. Szurkowski, B. Wiślicki, Tomasz Zmierczak","doi":"10.1117/12.222759","DOIUrl":"https://doi.org/10.1117/12.222759","url":null,"abstract":"This paper presents results of the initial stage of investigations concerning the application of photoacoustic spectroscopy technique as a tool for evaluation of lubricating oil degradation degree during its use. Absorbance spectra in 200 divided by 800 nm range and photoacoustic signal spectra in visible range have been determined for two oil samples: the new one and after oxidation during specified time interval (oil wear simulation). Both analysis methods led to similar results indicating the most tangible difference between samples to be found in the exicting light wavelength range below 450 nm.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124845939","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
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