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Advanced Optoelectronics and Lasers最新文献

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Whispering gallery modes in axisymmetric resonators 轴对称谐振器中的低语廊模式
Advanced Optoelectronics and Lasers Pub Date : 2008-03-03 DOI: 10.1117/12.793335
M. Gorodetsky, A. E. Fomin
{"title":"Whispering gallery modes in axisymmetric resonators","authors":"M. Gorodetsky, A. E. Fomin","doi":"10.1117/12.793335","DOIUrl":"https://doi.org/10.1117/12.793335","url":null,"abstract":"Using quasiclassical approach rather precise analytical approximations for the eigenfrequencies of whispering gallery modes in convex axisymmetric bodies may be found. We use the eikonal method to analyze the limits of precision of this approach using as a practical example spheroidal dielectric cavity. The series obtained for the calculation of eigenfrequency is compared with the known series for dielectric sphere and numerical calculations.","PeriodicalId":300417,"journal":{"name":"Advanced Optoelectronics and Lasers","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125908943","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
Estimation of diffractional losses in dielectric corner reflectors 介电角反射器衍射损耗的估计
Advanced Optoelectronics and Lasers Pub Date : 2008-03-03 DOI: 10.1117/12.795324
S. Tarabrin
{"title":"Estimation of diffractional losses in dielectric corner reflectors","authors":"S. Tarabrin","doi":"10.1117/12.795324","DOIUrl":"https://doi.org/10.1117/12.795324","url":null,"abstract":"The fundamental mechanism of the optical power loss of Gaussian light beam in dielectric corner reflector is examined i.e. diffractional scattering on the edge of corner reflector. Estimated value of relative losses is obtained for both polarizations of light beam with Goos-Haenchen shift taken into account. For the wave polarized parallel to the edge of corner reflector for the incident angle α =π/4 the estimated value is (Wdifr/W0)H is approximately equal to 3.82(λ0/a), and for transverse polarization is (Wdifr/W0)E is approximately equal to 7.03(λ0/a). Here λ0 is the optical wavelength in vacuum and a is the effective beam radius.","PeriodicalId":300417,"journal":{"name":"Advanced Optoelectronics and Lasers","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122423246","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
Application of the unbiased FIR algorithm for filtering the TIE model of a local clock 无偏FIR算法在本地时钟TIE模型滤波中的应用
Advanced Optoelectronics and Lasers Pub Date : 2008-03-03 DOI: 10.1117/12.795291
O. Ibarra-Manzano, L. Arceo-Miguel, Jorge Munoz Diaz
{"title":"Application of the unbiased FIR algorithm for filtering the TIE model of a local clock","authors":"O. Ibarra-Manzano, L. Arceo-Miguel, Jorge Munoz Diaz","doi":"10.1117/12.795291","DOIUrl":"https://doi.org/10.1117/12.795291","url":null,"abstract":"An unbiased finite impulse response (FIR) filter is investigated to estimate the time interval error (TIE) K-degree polynomial model of a local clock in GPS-based timekeeping in presence of the sawtooth noise induced by the receiver. We show that the unbiased FIR estimates are consistent with the reference (rubidium) measurements and fit them better than the standard Kalman filter.","PeriodicalId":300417,"journal":{"name":"Advanced Optoelectronics and Lasers","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126845529","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 photon density distribution in three section DBR tunable laser diode 三段DBR可调谐激光二极管中光子密度分布分析
Advanced Optoelectronics and Lasers Pub Date : 2008-03-03 DOI: 10.1117/12.793870
M. Yavari, V. Ahmadi, A. Zarifkar, K. Abedi
{"title":"Analysis of photon density distribution in three section DBR tunable laser diode","authors":"M. Yavari, V. Ahmadi, A. Zarifkar, K. Abedi","doi":"10.1117/12.793870","DOIUrl":"https://doi.org/10.1117/12.793870","url":null,"abstract":"A model based on the transfer matrix method (TMM), for the analysis of photon density distribution in three section distributed Bragg reflector (DBR) Tunable Laser Diode, is presented. The key feature of the model is the use of modified oscillation condition. This model provides longitudinal distribution of photon density in each section of laser for different values of grating and phase current. It is shown that both grating and phase current caused to a downward shift of photon density distribution profile. Simulation shows that, photon density distribution has peak at the active-passive interface.","PeriodicalId":300417,"journal":{"name":"Advanced Optoelectronics and Lasers","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124243916","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
Optical formation of waveguiding elements at the interaction of laser beams in transparent photopolymerizable media 透明光聚合介质中激光束相互作用下波导元件的光学形成
Advanced Optoelectronics and Lasers Pub Date : 2008-03-03 DOI: 10.1117/12.793336
S. N. Mensov, Y. Polushtaytsev
{"title":"Optical formation of waveguiding elements at the interaction of laser beams in transparent photopolymerizable media","authors":"S. N. Mensov, Y. Polushtaytsev","doi":"10.1117/12.793336","DOIUrl":"https://doi.org/10.1117/12.793336","url":null,"abstract":"Nonlinear processes of branched waveguiding structures optical synthesis at light-beams interaction in transparent photopolymerizable compositions are investigated numerically and experimentally as well.","PeriodicalId":300417,"journal":{"name":"Advanced Optoelectronics and Lasers","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116333250","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
Atomic dynamics and heat conduction of metal-dielectric and metal-semiconductor nano-interfaces 金属-电介质和金属-半导体纳米界面的原子动力学和热传导
Advanced Optoelectronics and Lasers Pub Date : 2008-03-03 DOI: 10.1117/12.793430
A. Feher, Y. S. Syrkin, A. G. Shkorbatov, M. L. Polyakov, Paul A. Minayev
{"title":"Atomic dynamics and heat conduction of metal-dielectric and metal-semiconductor nano-interfaces","authors":"A. Feher, Y. S. Syrkin, A. G. Shkorbatov, M. L. Polyakov, Paul A. Minayev","doi":"10.1117/12.793430","DOIUrl":"https://doi.org/10.1117/12.793430","url":null,"abstract":"The propagation of acoustic waves through interface of two crystals is studied on microscopic level using the discrete lattice model. It is considered phonon transmission through intercalated layer between two semi-infinite lattices. The general expressions for energy fluxes and impedances are proposed. Resonance transmission of phonons through the interface of the 3D pressure made KBr-Cu and Si-Cu point contact was studied using the discrete model of crystal lattice. We show that anomalous behavior of the reduced heat flux in the temperature range 1K Advanced Optoelectronics and Lasers AOL 0 2005-09-12|2005-09-17 Second International Conference on Advanced Optoelectronics and Lasers AOL05 1090086 Yalta, Ukraine Second International Conference on Advanced Optoelectronics and Lasers 7009 Nanostructures and New Materials","PeriodicalId":300417,"journal":{"name":"Advanced Optoelectronics and Lasers","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125998547","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
Modelling of electro-discharge XeCl laser excitation systems 放电XeCl激光激励系统的建模
Advanced Optoelectronics and Lasers Pub Date : 2008-03-03 DOI: 10.1117/12.793390
S. Anufrik, Alexander Volodenkov, Kazimir Znosko
{"title":"Modelling of electro-discharge XeCl laser excitation systems","authors":"S. Anufrik, Alexander Volodenkov, Kazimir Znosko","doi":"10.1117/12.793390","DOIUrl":"https://doi.org/10.1117/12.793390","url":null,"abstract":"With the purpose of reception of energy of generation 0,2-1 J, two types of electrodischarge XeCl-laser excitation system with was created. The modeling procedure of XeCl-laser excitation systems is developed, allowing calculate the form of a voltage pulse on laser electrodes and energy input in the active medium. The dependence of discharge gap resistance on time is usually simulated by exponential empirical dependence. In this case the breakdown voltage of inter-electrode gap must be taken from experimental data also. For each gas mixture, parameters of time dependence of discharge gap resistance and value of inter-electrode breakdown voltage have different values. Consequently, the results, which are obtained in this manner, have practical significance for definite gas ratio of mixture. We have developed the simple model, which takes into account the dependence of discharge gap parameters from gas pressure and composition. The solution of Boltzmann equation for electrons in electrical field (E/N) and calculation of kinetic processes may be carried out. In this case the effective rate of electrons formation may be approximated as function of gas composition and (E/N). Results of one model are compared to results of other model and experimental data.","PeriodicalId":300417,"journal":{"name":"Advanced Optoelectronics and Lasers","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128178488","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
Sampling-reconstruction procedure of Gaussian processes with the mutual statistical connection between all couples of samples 高斯过程的采样-重建过程，所有样本对之间具有相互统计联系
Advanced Optoelectronics and Lasers Pub Date : 2008-03-03 DOI: 10.1117/12.795353
V. Kazakov, Daniel Rodríguez S.
{"title":"Sampling-reconstruction procedure of Gaussian processes with the mutual statistical connection between all couples of samples","authors":"V. Kazakov, Daniel Rodríguez S.","doi":"10.1117/12.795353","DOIUrl":"https://doi.org/10.1117/12.795353","url":null,"abstract":"This paper is devoted to the special statistical problem of the time synchronization in many modern digital systems. We investigate the Sampling-Reconstruction Procedure (SRP) of Gaussian processes when the instant times of samples are randomly changed. This effect is known as jitter. We restrict our interest to the joint jitter of any two samples. It means that the jitter effect is described by a two-dimensional probability density function (pdf). Two different pdf are used in this paper: Gaussian and the distribution obtained by McFadden. We get the error reconstruction functions for both samples. The influence of different parameters on the error reconstruction functions is investigated in detail. Some examples are presented and the results are compared when the parameter of the two jitter distributions are the same.","PeriodicalId":300417,"journal":{"name":"Advanced Optoelectronics and Lasers","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130224637","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
Spectroscopic multiple-vibrational modeling of Raman gain in FRA FRA中拉曼增益的光谱多振动建模
Advanced Optoelectronics and Lasers Pub Date : 2008-03-03 DOI: 10.1117/12.793878
G. Felinskyi
{"title":"Spectroscopic multiple-vibrational modeling of Raman gain in FRA","authors":"G. Felinskyi","doi":"10.1117/12.793878","DOIUrl":"https://doi.org/10.1117/12.793878","url":null,"abstract":"Fiber Raman amplifiers with the theoretical limit of gain bandwidth up to 12 THz are becoming more and more essential in wavelength-division-multiplexing optical communication systems with terabit capacity. In this work, the new spectroscopic model for the Raman gain spectrum decomposition in arbitrary optical fiber using multiple vibrational modes is presented. Modeling results is given for the development of stimulated Raman gain spectrum in silica fiber. Nonlinear fitting procedure with Levenberg-Marquardt method of Raman gain profile was applied and it gives practically exact approximation of the observed Raman gain spectrum in silica fiber. The integrated intensities of model spectra are coincided with experimental spectrum within <0.3%. The optimal set of Raman gain parameters is compiled to simple analytical expressions that can be integrated and differentiated in symbolic form and are easy to evaluate numerically. Modeling results on the set of basic Raman amplifier characteristics such us: gain ripple, bandwidth, group delay, and noise performance is presented. Model is applicable to FRA design in fiber materials with known SRS spectra of any complexity.","PeriodicalId":300417,"journal":{"name":"Advanced Optoelectronics and Lasers","volume":"178 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124351273","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
Laser speckle velocimeter for a robotized vehicle 机器人车辆用激光散斑测速仪
Advanced Optoelectronics and Lasers Pub Date : 2008-03-03 DOI: 10.1117/12.795297
A. Aliverdiev, M. Caponero, C. Moriconi, P. Fichera, G. Sagratella
{"title":"Laser speckle velocimeter for a robotized vehicle","authors":"A. Aliverdiev, M. Caponero, C. Moriconi, P. Fichera, G. Sagratella","doi":"10.1117/12.795297","DOIUrl":"https://doi.org/10.1117/12.795297","url":null,"abstract":"The paper points out the progress in the exploitation of high, fast and precise non-contact velocimetry for robot applications. A technique for the precise measurement of the speed between two sliding surfaces has been developed during the research project for the realisation of an autonomous robot. The robot is devoted to the scouting of dangerous sites and to the execution of measurements in these places for the exploration of an extreme Antarctica environment (RAS project). This technique is based on the precise calculation of the common movement of a laser speckle field. This approach allows the realisation of a velocimeter suitable for use in extreme conditions. A description of the adopted methodology and the obtained results are the main topic of our work.","PeriodicalId":300417,"journal":{"name":"Advanced Optoelectronics and Lasers","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130539805","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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