EQEC'96. 1996 European Quantum Electronic Conference最新文献

{"title":"Collisions of Two-Dimensional Spatial Solitons in a Medium with Saturable Self-Focusing Nonlinearity","authors":"V. Smirnov, L. Nesterov, N. Rosanov, N. V. Vyssotina","doi":"10.1109/EQEC.1996.561924","DOIUrl":"https://doi.org/10.1109/EQEC.1996.561924","url":null,"abstract":"","PeriodicalId":11780,"journal":{"name":"EQEC'96. 1996 European Quantum Electronic Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88019650","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 Polarizabilities of Arbitrary States of Hydrogen and Alkali Atoms","authors":"M. A. Preobrazhenskii","doi":"10.1109/EQEC.1996.561697","DOIUrl":"https://doi.org/10.1109/EQEC.1996.561697","url":null,"abstract":"","PeriodicalId":11780,"journal":{"name":"EQEC'96. 1996 European Quantum Electronic Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88043946","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":"Suppression of Quantum Fluctations and Coherence of SRS on Bragg Grating","authors":"V.G. Vespelov, D.I. Staslelko","doi":"10.1109/EQEC.1996.561855","DOIUrl":"https://doi.org/10.1109/EQEC.1996.561855","url":null,"abstract":"","PeriodicalId":11780,"journal":{"name":"EQEC'96. 1996 European Quantum Electronic Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86085318","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":"Nonlinear Soliton Trapping and Tunneling","authors":"A. Prokhorov, V. Serkin","doi":"10.1109/EQEC.1996.561940","DOIUrl":"https://doi.org/10.1109/EQEC.1996.561940","url":null,"abstract":"","PeriodicalId":11780,"journal":{"name":"EQEC'96. 1996 European Quantum Electronic Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82914497","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":"Superthermal Kinetics of Pulsed Laser Metal Vaporization","authors":"T. D. Benett, C.P. Griforopoulos, D. Krajnovich","doi":"10.1109/EQEC.1996.561596","DOIUrl":"https://doi.org/10.1109/EQEC.1996.561596","url":null,"abstract":"","PeriodicalId":11780,"journal":{"name":"EQEC'96. 1996 European Quantum Electronic Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82806463","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":"Saturation Behaviour of Anti-Stokes Raman Laser in Plasmas","authors":"S. Babin, S. Kablukov, S. Khorev, S. Kobtsev","doi":"10.1109/EQEC.1996.561835","DOIUrl":"https://doi.org/10.1109/EQEC.1996.561835","url":null,"abstract":"","PeriodicalId":11780,"journal":{"name":"EQEC'96. 1996 European Quantum Electronic Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86633774","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":"Laser Cooling of Cesiuml Atoms in Gray Optical Molasses Down to 1.1pK","authors":"B. Boiron, A. Michaud, P. Lemonde, Y. Costin, C. Solomon, S. Weyers, K. Szymaniec, L. Cognet, A. Clairon","doi":"10.1109/EQEC.1996.561817","DOIUrl":"https://doi.org/10.1109/EQEC.1996.561817","url":null,"abstract":"","PeriodicalId":11780,"journal":{"name":"EQEC'96. 1996 European Quantum Electronic Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91420620","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":"New Promising Photosensityzers for Photodynamic Laser Therapy","authors":"E. Voropay, M. Samtsov, E. Zhavrid, E. Aleksandrova, I. Zhuravkin","doi":"10.1109/EQEC.1996.561808","DOIUrl":"https://doi.org/10.1109/EQEC.1996.561808","url":null,"abstract":"Photodynamic therapy of tumour is whidly spread now both in experimental and clinical oncology. Great progress in care of some diseases has been achieved. However, used now photosensityzers are not provide some requirements. For example almost anyone has low extinction coefficients (1 10’-4 lo‘ M-’ cm-’) in the visible range, where biology tissues have low transparency. We synthesized dyes for the ”therapeutic window” of biology tissues (extinction coefficients are of 1 10”-3 l o ” M-’ cm-’1. Besides, for the spectral range of extinction maxima (760-830 nm) there are reliable and simple for operation laser diodes, which can be used as irradiation sources for investigations of photodynamic efficiency. Spectral and photochemical parameters of synthesized dyes in organic solvents and water with concentrations of l O ‘ l O ’ have been investigated. Dyes in organic solvents were defined to be mainly in monomeric form. The water importing promotes the formation of H-aggregates of dyes. On the luminescence properties the singlet oxygen generation of investigated dyes has been identified. Quantum yield of the singlet oxygen generation has been estimated. The oxygen sensitizing was defined to be due to nonradiative energy transfer from triplet dye molecules to oxygen. Photophysical and photochemical properties of six dyes in vitro with the two order variation of the yield of the synglet oxygen generation have been investigated. The method of dye import into tumour cells HeLa has been developed. The accumulation of investigated dyes in tumour cells has been observed. Spectral analysis of accumulated dyes got only monomer forms in HeLa cells. Spectral and polarization measurements were used to investigate the environmental variation of dyes in culture media tumour cells. It was shown that dye molecules in culture media are aggregated with the albumen. Tests of photodynamic efficiency of six dyes in the tumour cells have been made. Five of them shown evident effect of cell killing under the irradiation in the spectral range of photosensitizer absorption. Optimal doses of optical irradiation for each agent in the range 36-73 J/cm’ have been defined. The correlation between the yield of the singlet oxygen and photodynamic properties of dyes have been determined. 11 :oo QThE1 Investigation of Above-Tlirrsliold-Ionization: Influence of an Elliptical Polarization of the Rndiation","PeriodicalId":11780,"journal":{"name":"EQEC'96. 1996 European Quantum Electronic Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83153409","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":"Traveling Wave Patterns in Lasers with Curved Mirrors","authors":"G. Harkness, J. Lega, G. Oppo","doi":"10.1109/EQEC.1996.561573","DOIUrl":"https://doi.org/10.1109/EQEC.1996.561573","url":null,"abstract":"the Maxwcll-l3locli cqiititioiis (.LIl<E) [2], the ineclianisms hcliiiid tlie waves and cavity modcs arc analagous [3]. In fact, numerical siiniilatioiis show that. for large enough input energ)(pump). iptteriis of a travclling-wavc nature arr rccovcred rveri wiicii the mirrors are curved. The threshold for tlie transition from patterns made up of empty cavity iiiodcs to ones of a travelling, wave nature i s shown i n panel 2 of the figure. As the radius of curvature of the mirrors, R, decreases the threshold values of the pump increase. In the shadcd region therr is bistability between target and Gauss-Laguerre pattern types. Above the threshold, the patterns lake the form of the cylindrically syiiimctric travelling waves shown in panel 3 of the figure. The waves are generated at the edge and travel inwards. We have analysed these structures using amplitude equations derived in the Gauss-Laguerre basis, and a numerical shooting method. This method allows us to study the stability of these target patterns: complex spatio-temporal behaviour is predicted for specific parameter ranges. In particular we have found an instability of the source of travelling waves which leads to a weak turbulence characterised by the erratic emission of vortices. These and other fascinating laser spatio-temporal structures will be presented with the aid of video displays. This work is, in part, supported by EPSRC grant GR/.1/30998.","PeriodicalId":11780,"journal":{"name":"EQEC'96. 1996 European Quantum Electronic Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83427410","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":"Secondary Instabilities of optical Hexagons in Sodium Vapor","authors":"Y. Logvin, T. Ackemann, W. Lange","doi":"10.1109/EQEC.1996.561716","DOIUrl":"https://doi.org/10.1109/EQEC.1996.561716","url":null,"abstract":"where C, X and Yare the deviations of the cooperativity parameter, external and intracavity field amplitudes from their values at the onset of bistability, all of them assumed to be small. f is the time, and p is a relaxation time that depends on the inverse of K, yL and yll, the decay rates of the field amplitude, medium polarization and population inversion, respectively. a = 2 /ZW,K is the diffraction parameter, w, being the cavity frequency, and c the speed of light. Vz is the transverse laplacian. A =(a, -2w,) l (yl +ZK) is the detuning parameter (the external field frequency w, is set to be equal to that of a two-photon laser with the same parameters), which is assumed to be small (weakly dispersive limit). Finally, CO= 2.7100 is the minimum value of the cooperativity parameter for hysteresis to exist in absorptive (A = 0) 20B [2], and g a 1.2766 and h E 0.4069 are numerical constants.","PeriodicalId":11780,"journal":{"name":"EQEC'96. 1996 European Quantum Electronic Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88758782","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}