A strong laser-induced thermo-lens (LITL) effect is found in optically-transparent ion-implanted polymer upon irradiation by a cw laser with a power up to 100 mW (λ = 532 nm). The effect is observed in bulk polymethylmethacrylate (PMMA) implanted with silicon ions (Si+). A series of PMMA specimens is examined, subjected to low-energy (50 keV) Si+ implantation at various dosages in the range from 1014 to 1017 ions/cm2. The thermo-lensing is unambiguously attributed to the modification of the subsurface region of the polymer upon the ion implantation. Having a gradient refractive-index in-depth profile, the subsurface organic-carbonaceous layer produced in the polymer by ion implantation, is responsible for the LITL effect observed in reflection geometry. The LITL occurs due to optical absorption of the ion-implanted layer of a thickness of about 100 nm buried in a depth ~ 100 nm, and subsequent laser-induced change in the refractive index of the Si+-implanted PMMA. Being of importance as considering photonic applications of ion-implanted optically-transparent polymers, the LITL effect in Si+-implanted PMMA is studied as a function of the implant dose, the incident laser power and incidence angle, and is linked to the structure formed in this ion-implanted plastic.
{"title":"Laser-induced thermo-lens in ion-implanted optically-transparent polymer","authors":"I. Stefanov, V. G. Ivanov, G. Hadjichristov","doi":"10.1117/12.848572","DOIUrl":"https://doi.org/10.1117/12.848572","url":null,"abstract":"A strong laser-induced thermo-lens (LITL) effect is found in optically-transparent ion-implanted polymer upon irradiation by a cw laser with a power up to 100 mW (λ = 532 nm). The effect is observed in bulk polymethylmethacrylate (PMMA) implanted with silicon ions (Si+). A series of PMMA specimens is examined, subjected to low-energy (50 keV) Si+ implantation at various dosages in the range from 1014 to 1017 ions/cm2. The thermo-lensing is unambiguously attributed to the modification of the subsurface region of the polymer upon the ion implantation. Having a gradient refractive-index in-depth profile, the subsurface organic-carbonaceous layer produced in the polymer by ion implantation, is responsible for the LITL effect observed in reflection geometry. The LITL occurs due to optical absorption of the ion-implanted layer of a thickness of about 100 nm buried in a depth ~ 100 nm, and subsequent laser-induced change in the refractive index of the Si+-implanted PMMA. Being of importance as considering photonic applications of ion-implanted optically-transparent polymers, the LITL effect in Si+-implanted PMMA is studied as a function of the implant dose, the incident laser power and incidence angle, and is linked to the structure formed in this ion-implanted plastic.","PeriodicalId":155856,"journal":{"name":"Ultrafast Nonlinear Optics","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130773827","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}
We study two-degree of freedom continuous nonlinear dynamical system introduced earlier3 for description of dual-core nonlinear directional coupler. The stationary points of this dynamical system are calculated as a function of dimensionless parameter that describes the material and pulse properties. The stability of obtained stationary points is studied. Stochastic motion has been observed
{"title":"Stochastic motion in continuous nonlinear dynamical system that describes optical switching","authors":"I. Uzunov","doi":"10.1117/12.853426","DOIUrl":"https://doi.org/10.1117/12.853426","url":null,"abstract":"We study two-degree of freedom continuous nonlinear dynamical system introduced earlier3 for description of dual-core nonlinear directional coupler. The stationary points of this dynamical system are calculated as a function of dimensionless parameter that describes the material and pulse properties. The stability of obtained stationary points is studied. Stochastic motion has been observed","PeriodicalId":155856,"journal":{"name":"Ultrafast Nonlinear Optics","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123138756","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}
A. Zlenko, U. G. Akhmetshin, V. Bogatyrjov, L. I. Bulatov, V. Dvoyrin, S. Firstov, E. Dianov
A germanium-doped silica-core fiber with an active region in the form of a thin ring of silica doped with bismuth ions was fabricated. Bismuth doping in the ring surrounding the core allows to stabilize bismuth in silica glass, and it does not impose any restrictions on the composition of the core. The bismuth concentration in the ring is less than 0.2 wt.%. The GeO2 concentration in the core is more than 15 mol.%. A high germanium concentration in the core allows to shift the zero dispersion wavelength to 1860 nm and to obtain a high nonlinear refractive index (n2 more than 3,2*10-20 m2/W). Spectroscopic investigations were carried out in the visible and near infrared (800-1700 nm) spectral range. Despite the small concentration of bismuth, we observed the absorption and luminescence characteristic bands, confirming the presence of bismuth active centers in silica glass. Upon pumping at 1350 nm the on/off gain spectrum was measured on a 20-m fiber. The gain was observed throughout investigated range of 1430-1530 nm. The maximal gain of ~9.5 dB was obtained near 1430 nm. The results of the spectroscopic investigations of the fiber with a thin active Bi-doped ring showed prospects of the creation and application of such fiber type for laser and nonlinear optics.
{"title":"Spectroscopic investigations of dispersion-shifted fiber with thin active Bi-doped ring and high nonlinear refractive index","authors":"A. Zlenko, U. G. Akhmetshin, V. Bogatyrjov, L. I. Bulatov, V. Dvoyrin, S. Firstov, E. Dianov","doi":"10.1117/12.848187","DOIUrl":"https://doi.org/10.1117/12.848187","url":null,"abstract":"A germanium-doped silica-core fiber with an active region in the form of a thin ring of silica doped with bismuth ions was fabricated. Bismuth doping in the ring surrounding the core allows to stabilize bismuth in silica glass, and it does not impose any restrictions on the composition of the core. The bismuth concentration in the ring is less than 0.2 wt.%. The GeO2 concentration in the core is more than 15 mol.%. A high germanium concentration in the core allows to shift the zero dispersion wavelength to 1860 nm and to obtain a high nonlinear refractive index (n2 more than 3,2*10-20 m2/W). Spectroscopic investigations were carried out in the visible and near infrared (800-1700 nm) spectral range. Despite the small concentration of bismuth, we observed the absorption and luminescence characteristic bands, confirming the presence of bismuth active centers in silica glass. Upon pumping at 1350 nm the on/off gain spectrum was measured on a 20-m fiber. The gain was observed throughout investigated range of 1430-1530 nm. The maximal gain of ~9.5 dB was obtained near 1430 nm. The results of the spectroscopic investigations of the fiber with a thin active Bi-doped ring showed prospects of the creation and application of such fiber type for laser and nonlinear optics.","PeriodicalId":155856,"journal":{"name":"Ultrafast Nonlinear Optics","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123539849","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}
M. Behmke, C. Rödel, M. Heyer, M. Kübel, T. Toncian, O. Jäckel, M. Toncian, H. Ahlswede, U. Teubner
The interaction of an extremely intense laser beam with the dense plasma generated on a solid target can lead to coherent electron dynamics at the vacuum plasma interface which causes the emission of ultra short light bursts within each optical cycle of the driving laser pulse. Therefore, the resulting pulse train consists of high harmonics of the laser fundamental frequency. We report on the, to our knowledge, first observation of surface-harmonics up to the 42nd order without any contrast improvement by a plasma mirror. In the spectral region from the 25th to the 40th order approximately 107 photons were detected in a solid angle of 4 • 10-4 sr.
{"title":"Surface harmonics generation with a 100 TW table-top laser system","authors":"M. Behmke, C. Rödel, M. Heyer, M. Kübel, T. Toncian, O. Jäckel, M. Toncian, H. Ahlswede, U. Teubner","doi":"10.1117/12.849837","DOIUrl":"https://doi.org/10.1117/12.849837","url":null,"abstract":"The interaction of an extremely intense laser beam with the dense plasma generated on a solid target can lead to coherent electron dynamics at the vacuum plasma interface which causes the emission of ultra short light bursts within each optical cycle of the driving laser pulse. Therefore, the resulting pulse train consists of high harmonics of the laser fundamental frequency. We report on the, to our knowledge, first observation of surface-harmonics up to the 42nd order without any contrast improvement by a plasma mirror. In the spectral region from the 25th to the 40th order approximately 107 photons were detected in a solid angle of 4 • 10-4 sr.","PeriodicalId":155856,"journal":{"name":"Ultrafast Nonlinear Optics","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124394926","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}
In this paper, we give a brief review on different types of applications relying on tilted-pulse-front pumping or angular dispersion. A short overview of the connection between pulse front tilt and angular dispersion is followed by discussing examples of achromatic phase matching in frequency conversion processes, tilted-pulse-front pumping for phasematched high-field THz pulse generation, as well as pumping of short-wavelength x-ray lasers, where tilting the pump pulse front is utilized for synchronization. The connection between pulse front tilt and angular dispersion is also addressed for some of the applications.
{"title":"Tilted-pulse-front pumping for phase matching and synchronization","authors":"J. Fülöp, L. Pálfalvi, G. Almási, J. Hebling","doi":"10.1117/12.849916","DOIUrl":"https://doi.org/10.1117/12.849916","url":null,"abstract":"In this paper, we give a brief review on different types of applications relying on tilted-pulse-front pumping or angular dispersion. A short overview of the connection between pulse front tilt and angular dispersion is followed by discussing examples of achromatic phase matching in frequency conversion processes, tilted-pulse-front pumping for phasematched high-field THz pulse generation, as well as pumping of short-wavelength x-ray lasers, where tilting the pump pulse front is utilized for synchronization. The connection between pulse front tilt and angular dispersion is also addressed for some of the applications.","PeriodicalId":155856,"journal":{"name":"Ultrafast Nonlinear Optics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131410872","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}
We present the results of numerical modelling of population dynamics in a hydrogen atom under the action of laser pulses of various duration, intensity and frequency. The possibility of formation of wave packets, including the states with high values of orbital and magnetic quantum numbers, via multiple transitions between the states of discrete and continuous spectrum under the action of the laser field is studied. The model is based on the expansion of the electron wave function over a large basis of hydrogen eigenstates of discrete and continuous spectrum. Ionization losses are taken into account by using a realistic model of the continuum. Partial localization of electron density in radial and angular variables is demonstrated. Most suitable conditions for wave packet formation are discussed for attainable lasers parameters.
{"title":"Forming of Rydberg wave packet under the action of the pulse of Ti:sapphire laser","authors":"V. Derbov, N. I. Teper","doi":"10.1117/12.848968","DOIUrl":"https://doi.org/10.1117/12.848968","url":null,"abstract":"We present the results of numerical modelling of population dynamics in a hydrogen atom under the action of laser pulses of various duration, intensity and frequency. The possibility of formation of wave packets, including the states with high values of orbital and magnetic quantum numbers, via multiple transitions between the states of discrete and continuous spectrum under the action of the laser field is studied. The model is based on the expansion of the electron wave function over a large basis of hydrogen eigenstates of discrete and continuous spectrum. Ionization losses are taken into account by using a realistic model of the continuum. Partial localization of electron density in radial and angular variables is demonstrated. Most suitable conditions for wave packet formation are discussed for attainable lasers parameters.","PeriodicalId":155856,"journal":{"name":"Ultrafast Nonlinear Optics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129360618","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}
We present a novel interferometric setup working in the XUV spectral range. The interferometer consists of a multi-pinhole mask and a transmission grating. In the case the light source consists of discrete spectral lines as is the case for laser-generated high harmonics the interferometer is capable of recording interferograms for multiple colors simultaneously. The device presented in this publication is an improvement of our recently published setup in a way which allows, in principle, for single-shot measurements of the temporal coherence length of a set of high harmonics. We present an experiment in which the influence of a spectral chirp of the driving laser on the coherence length of the generated harmonic radiation is studied.
{"title":"Multi-color, multi-beam interferometry of laser-generated XUV harmonic radiation","authors":"D. Hemmers, G. Pretzler","doi":"10.1117/12.849019","DOIUrl":"https://doi.org/10.1117/12.849019","url":null,"abstract":"We present a novel interferometric setup working in the XUV spectral range. The interferometer consists of a multi-pinhole mask and a transmission grating. In the case the light source consists of discrete spectral lines as is the case for laser-generated high harmonics the interferometer is capable of recording interferograms for multiple colors simultaneously. The device presented in this publication is an improvement of our recently published setup in a way which allows, in principle, for single-shot measurements of the temporal coherence length of a set of high harmonics. We present an experiment in which the influence of a spectral chirp of the driving laser on the coherence length of the generated harmonic radiation is studied.","PeriodicalId":155856,"journal":{"name":"Ultrafast Nonlinear Optics","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128410614","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}
In linear regime the single and few cycle femtosecond (fs) pulses propagates on several diffraction lengths changing their shape in semi-spherical (or parabolic) form, far away from plane wave and paraxial approximation. The experiments with fs pulses in air with power little above the critical for self-focusing (nonlinear regime) demonstrated new nonlinear effects as self-guiding, THz longitudinal emission and superbroad enlarging of the spectrum. In this paper we continue with developing of new theoretical model for quantitative description of the above experimental results.
{"title":"Femtosecond pulses in air: linear and nonlinear regime","authors":"L. Kovachev, K. Kovachev, I. Tunchev","doi":"10.1117/12.849380","DOIUrl":"https://doi.org/10.1117/12.849380","url":null,"abstract":"In linear regime the single and few cycle femtosecond (fs) pulses propagates on several diffraction lengths changing their shape in semi-spherical (or parabolic) form, far away from plane wave and paraxial approximation. The experiments with fs pulses in air with power little above the critical for self-focusing (nonlinear regime) demonstrated new nonlinear effects as self-guiding, THz longitudinal emission and superbroad enlarging of the spectrum. In this paper we continue with developing of new theoretical model for quantitative description of the above experimental results.","PeriodicalId":155856,"journal":{"name":"Ultrafast Nonlinear Optics","volume":"06 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128202619","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}
H. Iliev, D. Chuchumishev, I. Buchvarov, V. Petrov
Experimental results on passive mode-locking of Nd:YVO4 laser using intracavity frequency doubling in periodically poled KTP (PPKTP) crystal are reported. Both, negative cascaded chi-2 lensing and frequency doubling nonlinear mirror (FDNLM) are exploited for the laser mode-locking. The FDNLM based on intensity dependent reflection in the laser cavity ensures self-starting and self-sustaining mode-locking while the cascaded chi-2 lens process contributes to substantial pulse shortening. This hybrid technique enables generation of stable trains of pulses at high-average output power with several picoseconds pulse width. The pulse repetition rate of the laser is 117 MHz with average output power ranging from 0.5 W to 3 W and pulse duration from 2.9 to 5.2 ps.
本文报道了在周期性极化KTP (PPKTP)晶体中利用腔内倍频技术实现Nd:YVO4激光器被动锁模的实验结果。利用负级联chi-2透镜和倍频非线性反射镜(FDNLM)实现激光锁模。基于激光腔内强度相关反射的FDNLM确保了自启动和自维持模式锁定，而级联chi-2透镜过程有助于大幅缩短脉冲。这种混合技术能够在高平均输出功率下产生稳定的脉冲序列，脉冲宽度为几皮秒。脉冲重复频率为117 MHz，平均输出功率为0.5 W ~ 3w，脉冲持续时间为2.9 ~ 5.2 ps。
{"title":"Diode-pumped passively mode-locked laser using SHG in periodically poled crystals","authors":"H. Iliev, D. Chuchumishev, I. Buchvarov, V. Petrov","doi":"10.1117/12.849951","DOIUrl":"https://doi.org/10.1117/12.849951","url":null,"abstract":"Experimental results on passive mode-locking of Nd:YVO4 laser using intracavity frequency doubling in periodically poled KTP (PPKTP) crystal are reported. Both, negative cascaded chi-2 lensing and frequency doubling nonlinear mirror (FDNLM) are exploited for the laser mode-locking. The FDNLM based on intensity dependent reflection in the laser cavity ensures self-starting and self-sustaining mode-locking while the cascaded chi-2 lens process contributes to substantial pulse shortening. This hybrid technique enables generation of stable trains of pulses at high-average output power with several picoseconds pulse width. The pulse repetition rate of the laser is 117 MHz with average output power ranging from 0.5 W to 3 W and pulse duration from 2.9 to 5.2 ps.","PeriodicalId":155856,"journal":{"name":"Ultrafast Nonlinear Optics","volume":"235 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133946464","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}
Z. Bunzarov, I. Iliev, T. Dimov, P. Petkova, Tz. Kovachev, L. Lyutov, Y. Tzoukrovski
The new nonlinear crystal of magnesium sulfite hexahydrate (MgSO3.6H2O) belongs to the rare crystallographic class C3 (without a symmetry centre), the other known only representative being sodium periodate (NaIO4). There are some scarce data in the scientific papers about magnesium sulfite hexahydrate's physical properties. Single crystals of significant sizes (up to 40-50 mm) of MgSO3.6H2O as well as such, doped with Ni, Co, and Zn, for the time being are grown only by our own method developed in the Laboratory for Crystal growth at the Faculty of Physics of Sofia University. Recently we have observed the supposed presence of optical activity. Circular dichroism is not observed in pure MgSO3.6H2O. The results of the first ever investigations are presented, which demonstrate the presence of circular dichroism in MgSO3.6H2O doped with Co. The circular dichroism appears in the spectral range from 420 nm to 580 nm. The spectrum of circular dichroism demonstrates a well expressed structure - an isolated maximum at 470 nm and a combination of two overlapped maxima at ~ 495 nm and 520 nm respectively. The spectrum of the circular dichroism is compared with the absorption spectrum of MgSO3.6H2O:Co, along the direction (0001) and with the linear dichroism spectrum measured in direction(1210). It is shown in this way that the circular dichroism appears only in the spectral range of the optical absorption structure due to Co dopant. In the same spectral range can be observed also the linear dichroism determined by Co presence in MgSO3.6H2O.
{"title":"Circular dichroism in magnesium sulfite hexahydrate doped with cobalt","authors":"Z. Bunzarov, I. Iliev, T. Dimov, P. Petkova, Tz. Kovachev, L. Lyutov, Y. Tzoukrovski","doi":"10.1117/12.849198","DOIUrl":"https://doi.org/10.1117/12.849198","url":null,"abstract":"The new nonlinear crystal of magnesium sulfite hexahydrate (MgSO3.6H2O) belongs to the rare crystallographic class C3 (without a symmetry centre), the other known only representative being sodium periodate (NaIO4). There are some scarce data in the scientific papers about magnesium sulfite hexahydrate's physical properties. Single crystals of significant sizes (up to 40-50 mm) of MgSO3.6H2O as well as such, doped with Ni, Co, and Zn, for the time being are grown only by our own method developed in the Laboratory for Crystal growth at the Faculty of Physics of Sofia University. Recently we have observed the supposed presence of optical activity. Circular dichroism is not observed in pure MgSO3.6H2O. The results of the first ever investigations are presented, which demonstrate the presence of circular dichroism in MgSO3.6H2O doped with Co. The circular dichroism appears in the spectral range from 420 nm to 580 nm. The spectrum of circular dichroism demonstrates a well expressed structure - an isolated maximum at 470 nm and a combination of two overlapped maxima at ~ 495 nm and 520 nm respectively. The spectrum of the circular dichroism is compared with the absorption spectrum of MgSO3.6H2O:Co, along the direction (0001) and with the linear dichroism spectrum measured in direction(1210). It is shown in this way that the circular dichroism appears only in the spectral range of the optical absorption structure due to Co dopant. In the same spectral range can be observed also the linear dichroism determined by Co presence in MgSO3.6H2O.","PeriodicalId":155856,"journal":{"name":"Ultrafast Nonlinear Optics","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126761478","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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