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Acousto-Optics and Applications最新文献

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Analysis of particle distribution according to sizes in emulsions by scattering of light in ultrasonic beam 超声光束散射法分析乳剂中颗粒大小分布
Acousto-Optics and Applications Pub Date : 2005-03-03 DOI: 10.1117/12.612844
V. Rysakov, F. Rejmund, B. Zienkiewicz
{"title":"Analysis of particle distribution according to sizes in emulsions by scattering of light in ultrasonic beam","authors":"V. Rysakov, F. Rejmund, B. Zienkiewicz","doi":"10.1117/12.612844","DOIUrl":"https://doi.org/10.1117/12.612844","url":null,"abstract":"In the presented work the new method of the analysis of particle distribution in the emulsion according to the sizes with the increased resolution by means of the scattering of light is considered. A significant increase in the possibilities of the proposed method is achieved due to the additional introduction into the emulsion of physically powerful ultrasonic flow and make use of the frequency-phase method of detection. Fundamental special features of procedure and some technical questions are discussed.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"29 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113954987","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
Factors affecting phase measurement accuracy in acousto-optic phase processor 影响声光相位处理器相位测量精度的因素
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447604
M. Szustakowski, L. Jodłowski, R. Bobrowicz
{"title":"Factors affecting phase measurement accuracy in acousto-optic phase processor","authors":"M. Szustakowski, L. Jodłowski, R. Bobrowicz","doi":"10.1117/12.447604","DOIUrl":"https://doi.org/10.1117/12.447604","url":null,"abstract":"Acousto-optic phase processor (AOPP) is a new and powerful acousto-optic device designated for measurements of phase difference of radio-signals. It can be used for detecting and recognizing of radio-sources. The main parameter, which decides of its usefulness in application, is accuracy of phase difference measurement. This paper is focused on factors affecting phase measurement accuracy.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"59 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":"123530733","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
A few more words on resonant acoustooptical interaction 关于共振声光相互作用再多说几句
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447614
V. Petrov
{"title":"A few more words on resonant acoustooptical interaction","authors":"V. Petrov","doi":"10.1117/12.447614","DOIUrl":"https://doi.org/10.1117/12.447614","url":null,"abstract":"There is considered theoretically the competition near the resonant acousto-optical (AO) conditions of two mechanisms which influence to the diffraction efficiency ηd variation, when the thickness L of the sample (the length of interaction) is changed: (1) the enhancement of ηd due to increase of L, and (2) degradation of ηd due to the increase of optical absorption αL in crystal. It is shown that: (1) when changing the length of interaction L the maximum diffraction efficiency ηd is changed and shifted in wavelength's scale, reaching the maximum value at defined L which depend on the particular interaction geometry; (2) for particular considered in present work crystals the variation of L is more critical to the wavelength λ change for GaAs as compared to InP; (3) when realizing the optimized geometry of AO interaction closed to resonant condition at frequency 2.5 GHz, the diffraction efficiency in GaAs crystals can reach 8% and in InP 3.5% per 1 mW of conducted electromagnetic power (correspondingly 8000 and 3500% per 1 W of RF power) when the thickness of samples is about 4 mm.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"199 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":"114360791","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
Acousto-optic interaction in the directions forbidden by crystal symmetry 晶体对称所禁止方向上的声光相互作用
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447619
V. N. Parygin, A. V. Vershoubskiy
{"title":"Acousto-optic interaction in the directions forbidden by crystal symmetry","authors":"V. N. Parygin, A. V. Vershoubskiy","doi":"10.1117/12.447619","DOIUrl":"https://doi.org/10.1117/12.447619","url":null,"abstract":"It is shown that two types of acousto-optic diffraction (isotropic and anisotropic) are not independent. Speaking generally, the existence of one type testifies that the other type is possible also, though with less efficiency. The values of Raman-Nath parameter both for isotropic and anisotropic diffraction were calculated. The dependence of each Raman-Nath parameter value on every photoelastic constant is demonstrated. It is indicated that the divergent beam can interact in the \"forbidden\" direction in crystal, where acousto-optic figure of merit is equal to zero due to the crystal symmetry. The coefficient determining Raman-Nath parameter was calculated in the vicinity of Euler angles defining the \"forbidden\" [110] direction in paratellurite crystal. The results of experimental investigation of a collinear diffraction in paratellurite crystal are presented which proved the existence of this type of acousto-optic interaction with the efficiency up to 15%.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"247 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":"133747634","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
Laserlike acousto-optic generator 类似激光的声光发生器
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447620
V. Balakshy, S. Emelianov
{"title":"Laserlike acousto-optic generator","authors":"V. Balakshy, S. Emelianov","doi":"10.1117/12.447620","DOIUrl":"https://doi.org/10.1117/12.447620","url":null,"abstract":"An acousto-optic generator based on the effect of optical heterodyning is investigated theoretically and experimentally. The condition for self-excitation of oscillations in this system is determined, its dependence on parameters of acousto- optic interaction and feedback circuit is analyzed. The possibility of single-mode and multimode regimes of operation is shown. Preliminary results of experimental investigations of the generator with a paratellurite acousto-optic cell are presented. Experiments on active mode locking by means of an external harmonic signal are described as well.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"46 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":"114703071","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
Two-dimensional feature extraction and beam fanning suppression using acousto-optics 声光学二维特征提取与波束扇化抑制
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447618
T. Poon, P. Banerjee
{"title":"Two-dimensional feature extraction and beam fanning suppression using acousto-optics","authors":"T. Poon, P. Banerjee","doi":"10.1117/12.447618","DOIUrl":"https://doi.org/10.1117/12.447618","url":null,"abstract":"We review the role of acousto-optic (AO) Bragg modulators in spatial filtering. For lowpass spatial filtering, we use the Bragg-scattered beam, whereas for highpass filtering, we employ the forward scattered beam. Using the forward-scattered beam results in cross-derivative operation applications when two orthogonally oriented AO Bragg modulators are used. Using the Bragg-scattered beam, we propose suppression of beam fanning countered in nonlinear optics. In most cases our theory is verified by experimental results and computer simulations.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"23 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":"127187008","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
Three wave vectors immersed in the hypersonic sea 三个波矢量沉浸在高超声速海洋中
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447597
T. Błachowicz
{"title":"Three wave vectors immersed in the hypersonic sea","authors":"T. Błachowicz","doi":"10.1117/12.447597","DOIUrl":"https://doi.org/10.1117/12.447597","url":null,"abstract":"Brillouin scattering experiment has been carried out in the oxide crystal materials. A new wide-band component in the Brillouin spectrum has been observed in the SLAO sample. This completes typical the Brillouin spectrum in a solid state, where Rayleigh lines, stokes and anti-stokes optical signals are usually observed. This newly discovered spectral component is distributed uniformly in frequency, independent of the light power incident on a crystal and dependent on the light wavelength applied, what suggests absorption origin the phenomenon. The absorption-like channel in a scattering process should be interpreted as the sea of frequencies from where some specific values of Brillouin frequencies are seen.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"13 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":"126091134","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
Analysis of photoacoustic signal dependence on modulation frequency for YAG crystal doped with Cr+3 掺Cr+3 YAG晶体光声信号对调制频率的依赖性分析
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447612
A. Sikorska
{"title":"Analysis of photoacoustic signal dependence on modulation frequency for YAG crystal doped with Cr+3","authors":"A. Sikorska","doi":"10.1117/12.447612","DOIUrl":"https://doi.org/10.1117/12.447612","url":null,"abstract":"Unexpected rise of longwave band magnitude observed in photoacoustic (PA) spectrum obtained for the YAG:Cr laser material is discussed. Explanation of this phenomenon is proposed based on comparison of measured and calculated photoacoustic signal dependence on modulation frequency. Finite lifetime of excited level has been taken into account for this reason. Contribution of PA signal generated after absorption of sample luminescence by walls of measuring cell has been considered.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"211 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":"132411644","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
Bragg imaging of profiled ultrasound using focused laser beams 利用聚焦激光束对超声剖面进行布拉格成像
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447600
S. Vanaverbeke, O. Leroy
{"title":"Bragg imaging of profiled ultrasound using focused laser beams","authors":"S. Vanaverbeke, O. Leroy","doi":"10.1117/12.447600","DOIUrl":"https://doi.org/10.1117/12.447600","url":null,"abstract":"A model is presented for the acousto-optic interaction of a focused Gaussian laser beam with a profiled sound column in the Bragg regime. Expressions for the spectral distribution of the first diffraction orders are derived on the basis of a successive approximation method originally introduced by Aggarwal to study plane light wave diffraction by continuous plane ultrasonic waves [Proc. Ind. Acad. Sci. Sec. A 31, 417 (1950)]. It is shown that sharp images of the sound field in the first diffraction orders only occur in the focal plane of the laser beam after the sound column. The quality of the resulting images is investigated as a function of the initial beamwidth of the laser, the focal distance and the distance of the focusing lens from the sound column.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":" 33","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132095349","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
Quasi-collinear AOTF with improved resolution 改进分辨率的准共线AOTF
Acousto-Optics and Applications Pub Date : 2001-11-06 DOI: 10.1117/12.447621
M. Pushkareva, V. N. Parygin
{"title":"Quasi-collinear AOTF with improved resolution","authors":"M. Pushkareva, V. N. Parygin","doi":"10.1117/12.447621","DOIUrl":"https://doi.org/10.1117/12.447621","url":null,"abstract":"A number of possible configurations of acousto-optical tunable filter (AOTF) with a quasi-collinear geometry of interaction in the paratellurite crystal are observed. A theoretical examination of the AOTF resolution improving problem in the case of quasi-collinear geometry of acousto-optical interaction is presented. The analysis of interaction of light and sound in different planes of the paratellurite crystal is carried out. Devices with spherical angles of sound equal to 85.5° and 88° in the plane (110) are calculated. Some new and original configurations of AOTF are described. Possible angle apertures of sound and light in all these kinds of devices are observed and the frequency dependence, figure of merit dependencies are presented.","PeriodicalId":405317,"journal":{"name":"Acousto-Optics and Applications","volume":"2 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":"114188134","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
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