Pub Date : 2010-11-09DOI: 10.1109/LFNM.2010.5624205
V. Trofimov, M. Loginova
In the given paper we proposed an effective finite-difference scheme for a two-dimensional problem of femtosecond pulse influence on a semiconductor in the case of nonlinear dependence of light energy absorption coefficient on electric field potential.
{"title":"Conservative finite-difference scheme for a two-dimensional problem of plasma generation in a semiconductor under a laser pulse action","authors":"V. Trofimov, M. Loginova","doi":"10.1109/LFNM.2010.5624205","DOIUrl":"https://doi.org/10.1109/LFNM.2010.5624205","url":null,"abstract":"In the given paper we proposed an effective finite-difference scheme for a two-dimensional problem of femtosecond pulse influence on a semiconductor in the case of nonlinear dependence of light energy absorption coefficient on electric field potential.","PeriodicalId":117420,"journal":{"name":"2010 10th International Conference on Laser and Fiber-Optical Networks Modeling","volume":"2021 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122790160","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}
Pub Date : 2010-11-09DOI: 10.1109/LFNM.2010.5624180
K. Gaikovich, P. K. Gaikovich
A method of the coherent near-field sounding of multilayered dielectric structures is studied. It is based on field measurements with subwavelength probes (emitting and receiving) that are spaced in the near-field zone above the upper layer of the studied structure. It makes possible to achieve a subwavelength resolution at the control of the layers' depth. Especially high resolution can be achieved using the resonant response. The developed approach can be used, for instance, for the monitoring of epitaxy of multilayered heterostructures using SNOM techniques.
{"title":"Near-field resonances in diagnostics of multilayered media","authors":"K. Gaikovich, P. K. Gaikovich","doi":"10.1109/LFNM.2010.5624180","DOIUrl":"https://doi.org/10.1109/LFNM.2010.5624180","url":null,"abstract":"A method of the coherent near-field sounding of multilayered dielectric structures is studied. It is based on field measurements with subwavelength probes (emitting and receiving) that are spaced in the near-field zone above the upper layer of the studied structure. It makes possible to achieve a subwavelength resolution at the control of the layers' depth. Especially high resolution can be achieved using the resonant response. The developed approach can be used, for instance, for the monitoring of epitaxy of multilayered heterostructures using SNOM techniques.","PeriodicalId":117420,"journal":{"name":"2010 10th International Conference on Laser and Fiber-Optical Networks Modeling","volume":"73 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132679239","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}
Pub Date : 2010-11-09DOI: 10.1109/LFNM.2010.5624209
A. Andrushchak, M. Kaidan, Ye. M. Chernyhivskiy, O. Yurkevych, Taras Maksymyuk, B. Mytsyk, Andriy V. Kityk
We report the spatial anisotropy of the acoustooptical figure of merit M2 in LiNbO3:MgO and GaP crystals. The analysis is based on the indicative surfaces being calculated for different geometries of the acoustooptical diffraction. Basing on these results the most efficient geometries of the acoustooptical cells made of these crystals are determined. It give a possibility to increase the application efficiency of LiNbO3:MgO and GaP crystals as sensitive elements for acoustooptical high-frequency control of powerful laser irradiation.
{"title":"Application efficiency increasing of LiNbO3:MgO and GaP crystals for acoustooptical high-frequency control of powerfull laser irradiation","authors":"A. Andrushchak, M. Kaidan, Ye. M. Chernyhivskiy, O. Yurkevych, Taras Maksymyuk, B. Mytsyk, Andriy V. Kityk","doi":"10.1109/LFNM.2010.5624209","DOIUrl":"https://doi.org/10.1109/LFNM.2010.5624209","url":null,"abstract":"We report the spatial anisotropy of the acoustooptical figure of merit M2 in LiNbO3:MgO and GaP crystals. The analysis is based on the indicative surfaces being calculated for different geometries of the acoustooptical diffraction. Basing on these results the most efficient geometries of the acoustooptical cells made of these crystals are determined. It give a possibility to increase the application efficiency of LiNbO3:MgO and GaP crystals as sensitive elements for acoustooptical high-frequency control of powerful laser irradiation.","PeriodicalId":117420,"journal":{"name":"2010 10th International Conference on Laser and Fiber-Optical Networks Modeling","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133011378","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}
Pub Date : 2010-11-09DOI: 10.1109/LFNM.2010.5624225
L. Bartkiv, Y. Bobitski
In this paper the results of calculations and optimization of parameters of concave holographic diffraction grating for use in WDM multi/demultiplexer for data transmission systems with polymer optical fibers are presented.
本文介绍了用于聚合物光纤数据传输系统的WDM多/解复用器的凹面全息衍射光栅参数的计算和优化结果。
{"title":"Design and optimization of concave diffraction grating for WDM multi/demultiplexer","authors":"L. Bartkiv, Y. Bobitski","doi":"10.1109/LFNM.2010.5624225","DOIUrl":"https://doi.org/10.1109/LFNM.2010.5624225","url":null,"abstract":"In this paper the results of calculations and optimization of parameters of concave holographic diffraction grating for use in WDM multi/demultiplexer for data transmission systems with polymer optical fibers are presented.","PeriodicalId":117420,"journal":{"name":"2010 10th International Conference on Laser and Fiber-Optical Networks Modeling","volume":"35 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132521272","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}
Pub Date : 2010-11-09DOI: 10.1109/LFNM.2010.5624215
G. Basiladze, V. Berzhansky, A. Dolgov
We considered the possibility of the creation of Faraday rotator for optical switch on the basis of ferrite-garnet film with the "angular phase" magnetic anisotropy. The Faraday effect was researched under the extending of light in the plane of the film in the direction of the plane projection on axis of hard magnetization. Under the magnetization of the film by the field saturation of ≈ 50 Oe specific Faraday rotation in it with the wavelength of 1.31 and 1.55 µm was 46.4 h 34.8 °/mm, respectively. The degree of polarization on the exit of the rotator reached 0.98.
我们考虑了在具有“角相”磁各向异性的铁氧体-石榴石薄膜的基础上制造光开关用法拉第旋转器的可能性。研究了光在薄膜平面上沿硬磁化轴平面投影方向的延伸下的法拉第效应。在磁场饱和≈50 Oe的磁化条件下，在波长为1.31和1.55µm的薄膜中，比法拉第自转分别为46.4 h 34.8°/mm。旋转器出口偏振度达到0.98。
{"title":"Design of Faraday rotator for the optical switch","authors":"G. Basiladze, V. Berzhansky, A. Dolgov","doi":"10.1109/LFNM.2010.5624215","DOIUrl":"https://doi.org/10.1109/LFNM.2010.5624215","url":null,"abstract":"We considered the possibility of the creation of Faraday rotator for optical switch on the basis of ferrite-garnet film with the \"angular phase\" magnetic anisotropy. The Faraday effect was researched under the extending of light in the plane of the film in the direction of the plane projection on axis of hard magnetization. Under the magnetization of the film by the field saturation of ≈ 50 Oe specific Faraday rotation in it with the wavelength of 1.31 and 1.55 µm was 46.4 h 34.8 °/mm, respectively. The degree of polarization on the exit of the rotator reached 0.98.","PeriodicalId":117420,"journal":{"name":"2010 10th International Conference on Laser and Fiber-Optical Networks Modeling","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114604143","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}
Pub Date : 2010-11-09DOI: 10.1109/LFNM.2010.5624204
P. A. Kalinin, V. Kocharovsky, V. Kocharovsky
Polariton modes in quantum-well traps for Bose-condensation of excitons are studied. It is found that some modes can become unstable and start lasing due to exciton spectrum narrowing during condensation. A model of such lasing is developed, showing different lasing regimes and possible coherent features of recombination emission of excitons.
{"title":"Polariton mode lasing in quantum-well traps for Bose-condensation of dipolar excitons","authors":"P. A. Kalinin, V. Kocharovsky, V. Kocharovsky","doi":"10.1109/LFNM.2010.5624204","DOIUrl":"https://doi.org/10.1109/LFNM.2010.5624204","url":null,"abstract":"Polariton modes in quantum-well traps for Bose-condensation of excitons are studied. It is found that some modes can become unstable and start lasing due to exciton spectrum narrowing during condensation. A model of such lasing is developed, showing different lasing regimes and possible coherent features of recombination emission of excitons.","PeriodicalId":117420,"journal":{"name":"2010 10th International Conference on Laser and Fiber-Optical Networks Modeling","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127815201","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}
Pub Date : 2010-11-09DOI: 10.1109/LFNM.2010.5624243
E. Odarenko, A. Shmat’ko, A. S. Naklutskiy
The scattering of Gaussian beam on the metamaterial slab with negative refractive index is considered. Modeling is based on the spectral decomposition of the beam field in plane waves. The effect of different parameters on the polarization characteristics of the electromagnetic field reflected from the metamaterial layer and transmitted through it is investigated. The possibility of control of the beam polarization is shown.
{"title":"Scattering of the polarized Gaussian beam on the metamaterial slab","authors":"E. Odarenko, A. Shmat’ko, A. S. Naklutskiy","doi":"10.1109/LFNM.2010.5624243","DOIUrl":"https://doi.org/10.1109/LFNM.2010.5624243","url":null,"abstract":"The scattering of Gaussian beam on the metamaterial slab with negative refractive index is considered. Modeling is based on the spectral decomposition of the beam field in plane waves. The effect of different parameters on the polarization characteristics of the electromagnetic field reflected from the metamaterial layer and transmitted through it is investigated. The possibility of control of the beam polarization is shown.","PeriodicalId":117420,"journal":{"name":"2010 10th International Conference on Laser and Fiber-Optical Networks Modeling","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115618729","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}
Pub Date : 2010-11-09DOI: 10.1109/LFNM.2010.5624213
V. Fesenko
Passive polarization converter based on the Bragg reflector with multiple defects is proposed. The structure consists of N distributed Bragg reflectors (DBR) separated by N-1 defects. Transmittance spectra for two orthogonal polarizations of the incident plane wave are presented.
{"title":"Passive polarization converter based on the Bragg reflector with multiple defects","authors":"V. Fesenko","doi":"10.1109/LFNM.2010.5624213","DOIUrl":"https://doi.org/10.1109/LFNM.2010.5624213","url":null,"abstract":"Passive polarization converter based on the Bragg reflector with multiple defects is proposed. The structure consists of N distributed Bragg reflectors (DBR) separated by N-1 defects. Transmittance spectra for two orthogonal polarizations of the incident plane wave are presented.","PeriodicalId":117420,"journal":{"name":"2010 10th International Conference on Laser and Fiber-Optical Networks Modeling","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124469563","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}
Pub Date : 2010-11-09DOI: 10.1109/LFNM.2010.5624183
O. Shapoval, R. Sauleau, A. Nosich
Nanosize thin flat silver strip in the air is considered as an optical resonator. The scattering characteristics of the H-polarized electromagnetic wave diffraction are analyzed using the decoupled singular and hyper-singular integral equations (IEs) for the electric and magnetic surface currents on the strip. IEs are discretized with the aid of the interpolation type quadrature formulas. This algorithm, also known as the method of discrete singularities (MDS), is numerically efficient and guarantees fast convergence and controlled accuracy of computations.
{"title":"Plasmon resonances in the H-wave scattering by a nanosize thin flat silver strip","authors":"O. Shapoval, R. Sauleau, A. Nosich","doi":"10.1109/LFNM.2010.5624183","DOIUrl":"https://doi.org/10.1109/LFNM.2010.5624183","url":null,"abstract":"Nanosize thin flat silver strip in the air is considered as an optical resonator. The scattering characteristics of the H-polarized electromagnetic wave diffraction are analyzed using the decoupled singular and hyper-singular integral equations (IEs) for the electric and magnetic surface currents on the strip. IEs are discretized with the aid of the interpolation type quadrature formulas. This algorithm, also known as the method of discrete singularities (MDS), is numerically efficient and guarantees fast convergence and controlled accuracy of computations.","PeriodicalId":117420,"journal":{"name":"2010 10th International Conference on Laser and Fiber-Optical Networks Modeling","volume":"23 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114100596","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}
Pub Date : 2010-11-09DOI: 10.1109/LFNM.2010.5624178
Dmitrii Ushakov, V. Kononenko
Numerical calculations of energy characteristics of quantum-well structures based on Si1−xGex-Si have been performed using the four-band k·p method. It is shown that varying the thickness of the active layer and the height and width of potential barriers one can control the frequency ω of optical transitions. The analytical expressions for ħω are established, which are in good agreement with the numerical calculations by the k·p method, exactly define the limits of changes in ħω.
{"title":"Calculation of energy characteristics of Si1−xGex-Si quantum-well heterostructures using k·p method","authors":"Dmitrii Ushakov, V. Kononenko","doi":"10.1109/LFNM.2010.5624178","DOIUrl":"https://doi.org/10.1109/LFNM.2010.5624178","url":null,"abstract":"Numerical calculations of energy characteristics of quantum-well structures based on Si<inf>1−x</inf>Ge<inf>x</inf>-Si have been performed using the four-band k·p method. It is shown that varying the thickness of the active layer and the height and width of potential barriers one can control the frequency ω of optical transitions. The analytical expressions for ħω are established, which are in good agreement with the numerical calculations by the k·p method, exactly define the limits of changes in ħω.","PeriodicalId":117420,"journal":{"name":"2010 10th International Conference on Laser and Fiber-Optical Networks Modeling","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115884411","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}
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