2014 International Conference Laser Optics最新文献

{"title":"Two-photon recording of stable luminescent centers in chromone-doped polymer films","authors":"A. Ayt, V. A. Barachevsky, O. I. Kobeleva, T. Valova, S. Gagarskiy, V. Kiyko, A. N. Sergeev, A. Veniaminov, V. Zakharov, M. Krayushkin, H. Iglev","doi":"10.1109/LO.2014.6886252","DOIUrl":"https://doi.org/10.1109/LO.2014.6886252","url":null,"abstract":"The study defines threshold values of energy density required for two-photon writing of stable fluorescent bit patterns within polymer layers containing chromones class chemical compounds by visual laser pulses in range of pulse widths from nanoseconds to femtoseconds. Photo-regrouping of non-luminescent chromones to fluorescent products is shown as the result of true type two-photon absorption (TPA) and stepwise TPA as well. In the latter case writing beam fluence can be reduced due to increase of the effective TPA coefficient, but laser-induced thermal damage of matrix becomes more probable too.","PeriodicalId":191027,"journal":{"name":"2014 International Conference Laser Optics","volume":"217 S697","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120854578","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}

{"title":"Specificities of laser pulse amplification in multi-pass amplifiers","authors":"O. Vadimova, I. Mukhin, O. Palashov","doi":"10.1109/LO.2014.6886271","DOIUrl":"https://doi.org/10.1109/LO.2014.6886271","url":null,"abstract":"The laser pulse amplification was considered with accounting temporal and spatial profiles under various pulse parameters. It was shown that using of multiple passes amplifier allows increasing efficiency and reducing temporal profile distortion. The possible ways to decreasing of temporal profile distortion were considered.","PeriodicalId":191027,"journal":{"name":"2014 International Conference Laser Optics","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123920109","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}

{"title":"Experimental testing of the diffraction method for optical wavefield recording","authors":"S. Stukachev, I. Kozhevatov","doi":"10.1109/LO.2014.6886313","DOIUrl":"https://doi.org/10.1109/LO.2014.6886313","url":null,"abstract":"The novel diffraction method for optical wavefield recording is proposed. The experimental testing of the method was carried out. It was shown that the diffraction method provides wavefront measurements with high accuracy and spacial resolution.","PeriodicalId":191027,"journal":{"name":"2014 International Conference Laser Optics","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124023450","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}

{"title":"Modeling of gain anisotropy induced by a linearly polarized pump in Nd:YAG laser","authors":"P. Khandokhin, N. Milovsky","doi":"10.1109/LO.2014.6886251","DOIUrl":"https://doi.org/10.1109/LO.2014.6886251","url":null,"abstract":"We present a new model of a bipolarized laser taking into consideration the real orientation of the absorption and emission dipoles in Nd:YAG active media to describe the experimentally observed effect of the gain anisotropy induced by the linearly polarized pump.","PeriodicalId":191027,"journal":{"name":"2014 International Conference Laser Optics","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122675283","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}

{"title":"Photo-physical processes in systems containing SWCNT-based hybrids with regard to optical power limiting","authors":"A. Vlasov, I. Belousova, I. Kislyakov","doi":"10.1109/LO.2014.6886351","DOIUrl":"https://doi.org/10.1109/LO.2014.6886351","url":null,"abstract":"Summary form only given: We report on the optical power limiting phenomena in fluid systems containing binary hybrid photo-active agents on the platform of SWCNTs in fluid matrices.","PeriodicalId":191027,"journal":{"name":"2014 International Conference Laser Optics","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128078159","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}

{"title":"The generation of singlet oxygen in aqueous suspensions of carbon nanoparticles","authors":"V. Kiselev, LV. Bagrov, A. Starodubtsev, A. N. Burchinov, LM. Kislyakov","doi":"10.1109/LO.2014.6886206","DOIUrl":"https://doi.org/10.1109/LO.2014.6886206","url":null,"abstract":"With the use of the method of chemical traps with EPR registration the generation of singlet oxygen in aqueous suspensions of carbon nanoparticles for SW CNT, MW CNT and fullerene is shown.","PeriodicalId":191027,"journal":{"name":"2014 International Conference Laser Optics","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128521187","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}

{"title":"Graphene plasmonic heterostructures for terahertz device applications","authors":"T. Otsuji, A. Satou, S. B. Tombet, V. Ryzhii, V. Popov, M. Shur","doi":"10.1109/LO.2014.6886421","DOIUrl":"https://doi.org/10.1109/LO.2014.6886421","url":null,"abstract":"This paper reviews recent advances in graphene plasmonic heterostructures for terahertz (THz) device applications. A double graphene-layer (DGL) core-shell structure with a tunnel-barrier layer is sandwiched between the outer gate stack layers at both sides. When the band offset is aligned to the THz photon energy, the DGL structure can mediate photon-assisted resonant tunneling, resulting in resonant emission or detection of the THz radiation. The cooperative double-resonant excitation with structure-sensitive graphene plasmons gives rise to various functionalities in the THz device implementations.","PeriodicalId":191027,"journal":{"name":"2014 International Conference Laser Optics","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129889892","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}

{"title":"Experimental observation for new polymorphs of silicon formed through ultrafast-laser-induced microexplosion","authors":"L. Rapp, B. Haberl, C. Pickard, J. Bradby, E. Gamaly, J. Williams, A. Rode","doi":"10.1109/LO.2014.6886284","DOIUrl":"https://doi.org/10.1109/LO.2014.6886284","url":null,"abstract":"Summary form only given. Intense ultrafast laser pulses tightly focused in the bulk of transparent material produce plasma in the extreme conditions similar to those in the cores of planets. The plasma generates strong shock waves in such confined geometry, thus inducing a laser-ignited microexplosion. This new method of compression of matter by ultra-short laser induced micro-explosion generates pressures in excess of Terapascals, leaving all the pressure/temperature-affected material confined inside the bulk of pristine crystal for the further investigations. In contrast to dynamic (shock wave) and static (diamond-anvil cell) methods, the initial materials in a microexplosion are transformed into the high entropy state of extreme dense plasma where the memory of the initial state is completely lost. This state is similar to “a primeval soup” at the early stages of the Universe evolution. The randomised material swiftly cools down isochorically to ambient in a short, nanosecond-scale time. For example, it was demonstrated that a sapphire crystal converted by a fs-laser pulse to plasma returns to the ambient state as a mixture of nano-crystallites of the previously unobserved form of bcc-aluminium. In this presentation the new experimental results evidencing the formation of novel structures in laserinduced confined micro-explosion in silicon will be highlighted. Electron diffraction pattern of the shock wave isochorically affected areas reveals the presence of a mixture of silicon phases with a number of previously unidentified diffraction spots. Indexation of the diffraction patterns from various microexplosion sites demonstrate close correlation between the numerically predicted phases and the observed diffracted spots. The observation of a new Si phase is a confirmation that ultrafast laser-induced microexplosion in confine geometry is a unique method for dynamic generation of transient states of matter by fast quenching from the laser-induced plasma where the new phases are reserved for further studies.","PeriodicalId":191027,"journal":{"name":"2014 International Conference Laser Optics","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130566360","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}

{"title":"The special aspects of neodymium and copper-containing phosphate glasses production for large-scaled disk active elements of power high-energy lasers and radiation amplifiers","authors":"L. I. Avakyants, A. N. Ignatov, E. Y. Krekhova, A. Pozdnyakov, V. F. Surkova, V. Arbuzov, M. V. Voroshilova, A. Dmitryuk, S. Kramarev, S. I. Nikitina, Yu. K. Fyodorov","doi":"10.1109/LO.2014.6886228","DOIUrl":"https://doi.org/10.1109/LO.2014.6886228","url":null,"abstract":"The necessity of creating the power high-energy radiation amplifiers requires the production of increasingly large disk active elements (DAE). Increasing the size of the required DAE leads to certain problems while their multistage production. Some of them, primarily related to the terms of melting were reviewed.","PeriodicalId":191027,"journal":{"name":"2014 International Conference Laser Optics","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130603200","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}

{"title":"Investigation of limiting properties of nonlinear materials","authors":"M. Savelyev, A. Gerasimenko, S. Tereshchenko, V. Podgaetsky","doi":"10.1109/LO.2014.6886407","DOIUrl":"https://doi.org/10.1109/LO.2014.6886407","url":null,"abstract":"Definition of nonlinear optical characteristics of substances of laser radiation limiters (LRL) was considered. Nanocomposite and disperse optical materials based on single-walled carbon nanotubes (SWCNT) of semiconducting and metal types with a high perfection of the crystal structure were investigated. The amount of semiconducting SWCNTs outnumbered metal several times Most SWCNTs were presented in clusters as separate loose fibers. It indicated a high degree of its dispersion. In the dispersion of carboxylated SWCNTs in tetrahydrofuran laser attenuation coefficient AC ~ 13 at a linear transmission T0 ≈ 75 %. In the dispersion of SWCNT functionalized zinc phthalocyanine derivatives, AC = 13-14 at T0 = 55-75%. Nanocomposites based on polymethylmethacrylate with functionalized SWCNTs AC ~ 8 at T0 ≈ 70%. A new method of simultaneous calculation of the beam waist radius and nonlinear absorption coefficient from the Z_scan data is proposed. The value of nonlinear optical characteristics of ZnSe, porphyrin-graphene (Graphene-TPP), fullerene-graphene (Graphene-60), polyethylene oxide containing multilayer carbon nanotubes (PEO/MWNT), along with polymethine dyes PD-792 and PD-7098 and dicyanomethylene pyran dyes DCM-627 and DCM-684, are obtained.","PeriodicalId":191027,"journal":{"name":"2014 International Conference Laser Optics","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130334153","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}