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Eighth International Conference on Ultrafast Phenomena最新文献

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Energetics and Dynamics of Global Protein Motion 蛋白质全局运动的能量学和动力学
Eighth International Conference on Ultrafast Phenomena Pub Date : 1900-01-01 DOI: 10.1007/978-3-642-84910-7_168
R. Miller, J. Deak, S. Palese, M. Pereira, L. Richard, Lynn Schilling
{"title":"Energetics and Dynamics of Global Protein Motion","authors":"R. Miller, J. Deak, S. Palese, M. Pereira, L. Richard, Lynn Schilling","doi":"10.1007/978-3-642-84910-7_168","DOIUrl":"https://doi.org/10.1007/978-3-642-84910-7_168","url":null,"abstract":"","PeriodicalId":242710,"journal":{"name":"Eighth International Conference on Ultrafast Phenomena","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131980313","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
Ultrafast Fluorescence Spectroscopy of Reaction Centers of Photosynthetic Bacteria 光合细菌反应中心的超快荧光光谱研究
Eighth International Conference on Ultrafast Phenomena Pub Date : 1900-01-01 DOI: 10.1364/up.1992.tuc29
P. Hamm, W. Zinth
{"title":"Ultrafast Fluorescence Spectroscopy of Reaction Centers of Photosynthetic Bacteria","authors":"P. Hamm, W. Zinth","doi":"10.1364/up.1992.tuc29","DOIUrl":"https://doi.org/10.1364/up.1992.tuc29","url":null,"abstract":"In the primary reaction of photosynthesis an electron is transferred through a pigment-protein complex called reaction center (RC). Starting from the primary donor, a dimer of bacteriochlorophyll molecules called special pair P, the electron reaches a quinone (Q) via two intermediate acceptors, a bacteriochlorophyll-monomer (B) and a bacteriopheophytin (H). In a number of publications this electron transfer process was investigated by transient absorption spectroscopy /1/. At least four kinetic constants of 0.9 ps, 3.5 ps, 200 ps and infinity are required to explain the absorption data /2,3/. The interpretation of these measurements is difficult since absorbance changes from different intermediates interfere. At present the most straight-forward interpretation of the data is the stepwise electron transfer model via the radical pair state P+B–: Complementary information from fluorescence up-conversion experiments is given in this contribution. By this way we follow directly the decay of the excited electronic state of the special pair. The experimental system was optimized to high time resolution and high sensitivity at low repetition rates in order to meet the requirements of the biological samples.","PeriodicalId":242710,"journal":{"name":"Eighth International Conference on Ultrafast Phenomena","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133464001","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
Femtosecond Time-Resolved Four-Wave Mixing in GaAs Quantum Wells GaAs量子阱中的飞秒时间分辨四波混频
Eighth International Conference on Ultrafast Phenomena Pub Date : 1900-01-01 DOI: 10.1007/978-3-642-84910-7_144
Dai‐Sik Kim, J. Shah, T. Damen, J. Cunningham, W. Schäfer, S. Schmitt-Rink
{"title":"Femtosecond Time-Resolved Four-Wave Mixing in GaAs Quantum Wells","authors":"Dai‐Sik Kim, J. Shah, T. Damen, J. Cunningham, W. Schäfer, S. Schmitt-Rink","doi":"10.1007/978-3-642-84910-7_144","DOIUrl":"https://doi.org/10.1007/978-3-642-84910-7_144","url":null,"abstract":"","PeriodicalId":242710,"journal":{"name":"Eighth International Conference on Ultrafast Phenomena","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133250823","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
An Overview: Femtosecond Spectroscopy at the Cutting Edge of Time Resolution 飞秒光谱学在时间分辨率研究中的应用综述
Eighth International Conference on Ultrafast Phenomena Pub Date : 1900-01-01 DOI: 10.1364/up.1992.wb1
C. Shank, R. Schoenlein, D. Mittleman, J. Shiang, A. Alivisatos
{"title":"An Overview: Femtosecond Spectroscopy at the Cutting Edge of Time Resolution","authors":"C. Shank, R. Schoenlein, D. Mittleman, J. Shiang, A. Alivisatos","doi":"10.1364/up.1992.wb1","DOIUrl":"https://doi.org/10.1364/up.1992.wb1","url":null,"abstract":"We report the first direct measurements of electronic dynamics in CdSe nanocrystals on a femtosecond time scale. Two pulse photon echo measurements show a rapid echo decay, on the order of 8 fs. Complimentary three pulse echo measurements indicate that the two pulse results are dominated by quantum beats associated with the 210 cm–1 LO phonon mode. Using a novel technique to cancel the effects of the quantum beat, we observe in the three pulse echo results evidence of two echo decay times, on the order of 8 fs and 18 fs respectively. In addition, time resolved spectral measurements show evidence of hole burning and dynamics on a femtosecond time scale. These results suggest that the electronic properties of these materials are more complicated than previously believed.","PeriodicalId":242710,"journal":{"name":"Eighth International Conference on Ultrafast Phenomena","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128647805","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
Ultrashort Pulse Generation from High Power Diode Arrays using Intracavity Nonlinearities 利用腔内非线性的大功率二极管阵列产生超短脉冲
Eighth International Conference on Ultrafast Phenomena Pub Date : 1900-01-01 DOI: 10.1364/up.1992.mb4
L. Pang, J. Fujimoto, E. Kintzer
{"title":"Ultrashort Pulse Generation from High Power Diode Arrays using Intracavity Nonlinearities","authors":"L. Pang, J. Fujimoto, E. Kintzer","doi":"10.1364/up.1992.mb4","DOIUrl":"https://doi.org/10.1364/up.1992.mb4","url":null,"abstract":"The development of high power semiconductor diode laser arrays and broad area devices makes possible the use of new mode-locking techniques which utilize high intracavity intensities to produce nonlinearities. Short pulse generation may be investigated and optimized using hybrid cavity designs which incorporate a controlled amount of self phase modulation (SPM), group velocity dispersion (GVD), and fast saturable absorption.","PeriodicalId":242710,"journal":{"name":"Eighth International Conference on Ultrafast Phenomena","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116808005","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
Plasma Physics with Ultra Short and Ultra Intense Laser Pulses 超短超强激光脉冲等离子体物理
Eighth International Conference on Ultrafast Phenomena Pub Date : 1900-01-01 DOI: 10.1007/978-3-642-84910-7_81
T. Johnston, Y. Beaudoin, M. Chaker, C. Cote, J. Kieffer, J. Matte, H. Pépin, C. Chien, S. Coe, G. Mourou, D. Umstadter
{"title":"Plasma Physics with Ultra Short and Ultra Intense Laser Pulses","authors":"T. Johnston, Y. Beaudoin, M. Chaker, C. Cote, J. Kieffer, J. Matte, H. Pépin, C. Chien, S. Coe, G. Mourou, D. Umstadter","doi":"10.1007/978-3-642-84910-7_81","DOIUrl":"https://doi.org/10.1007/978-3-642-84910-7_81","url":null,"abstract":"","PeriodicalId":242710,"journal":{"name":"Eighth International Conference on Ultrafast Phenomena","volume":"1230 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121712686","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
Recombination XUV Lasers Driven by Low Energy Picosecond Pulses from a High Brightness KrF Raman Laser 高亮度KrF拉曼激光器低能量皮秒脉冲驱动的复合XUV激光器
Eighth International Conference on Ultrafast Phenomena Pub Date : 1900-01-01 DOI: 10.1364/up.1992.tuc24
L. Dwivedi, J. Jacoby, Y. Kato, M. Key, R. Kodama, C. Lewis, M. Lightbody, H. Murai, P. Norreys, G. Pert, S. Ramsden, H. Shiraga, C. Smith, G. Tallents, J. Uhomoibhi, G. Yuan, J Zhang
{"title":"Recombination XUV Lasers Driven by Low Energy Picosecond Pulses from a High Brightness KrF Raman Laser","authors":"L. Dwivedi, J. Jacoby, Y. Kato, M. Key, R. Kodama, C. Lewis, M. Lightbody, H. Murai, P. Norreys, G. Pert, S. Ramsden, H. Shiraga, C. Smith, G. Tallents, J. Uhomoibhi, G. Yuan, J Zhang","doi":"10.1364/up.1992.tuc24","DOIUrl":"https://doi.org/10.1364/up.1992.tuc24","url":null,"abstract":"There is great interest in the development of XUV lasers with driver energies of a few joules rather than a few kilojoules. One of the most promising ways to accomplish this is based upon the use of fast adiabatic cooling to produce population inversion in recombination to hydrogenic ions(l). Theoretical modelling(2) indicates that the optimum driver for this scheme should produce pulses of duration < 10 ps, ultraviolet wavelength and focusability to sub 10 µm line foci with length of the order 1 cm. Under these conditions saturated laser action at wavelengths below 20 nm is predicted in plasmas created from fibre targets of < 10 µm radius with driver energy < 10 J (see eg Fig 1). Preliminary experimental studies have been carried out using a high brightness 5 J, 10 ps KrF pumped Raman laser beam(3) with observations of fluorescence and possible amplification on the Balmer-α transitions of C VI, O VIII(4). In a current experiment these phenomena are being studied in detail. Our paper will review the theoretical basis for the X-ray laser scheme, describe the experimental and diagnostic system, review previous preliminary results and report on the results of the current more detailed experiment.","PeriodicalId":242710,"journal":{"name":"Eighth International Conference on Ultrafast Phenomena","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121986853","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
Polarization-Dependent Femtosecond Dynamics of MBE-grown Phthalocyanine Organic Thin Films mbe生长的酞菁有机薄膜偏振相关飞秒动力学研究
Eighth International Conference on Ultrafast Phenomena Pub Date : 1900-01-01 DOI: 10.1007/978-3-642-84910-7_118
Sandalphon, V. S. Williams, K. Meissner, N. Armstrong, N. Peyghambarian
{"title":"Polarization-Dependent Femtosecond Dynamics of MBE-grown Phthalocyanine Organic Thin Films","authors":"Sandalphon, V. S. Williams, K. Meissner, N. Armstrong, N. Peyghambarian","doi":"10.1007/978-3-642-84910-7_118","DOIUrl":"https://doi.org/10.1007/978-3-642-84910-7_118","url":null,"abstract":"","PeriodicalId":242710,"journal":{"name":"Eighth International Conference on Ultrafast Phenomena","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124922823","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
Dynamics and mechanism of Cu-porphyrin triplet quenching through liganding by oxygen-containing organic solvents 含氧有机溶剂配位铜卟啉三重态猝灭动力学及机理
Eighth International Conference on Ultrafast Phenomena Pub Date : 1900-01-01 DOI: 10.1364/up.1992.mc33
V. Chirvony, R. Gadonas
{"title":"Dynamics and mechanism of Cu-porphyrin triplet quenching through liganding by oxygen-containing organic solvents","authors":"V. Chirvony, R. Gadonas","doi":"10.1364/up.1992.mc33","DOIUrl":"https://doi.org/10.1364/up.1992.mc33","url":null,"abstract":"Our experiments were performed with tunable picosecond absorption spectrometer (20ps pulse duration) for nondegassed Cu-porphyrln (CuP) solutions (10−4 M) at room temperature.","PeriodicalId":242710,"journal":{"name":"Eighth International Conference on Ultrafast Phenomena","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130227393","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
Femtosecond Solvent Dynamics Studied by Time Resolved Fluorescence and Transient Birefringence. 用时间分辨荧光和瞬态双折射研究飞秒溶剂动力学。
Eighth International Conference on Ultrafast Phenomena Pub Date : 1900-01-01 DOI: 10.1007/978-3-642-84910-7_198
S. Rosenthal, N. Scherer, M. Cho, X. Xie, M. E. Schmidt, G. Fleming
{"title":"Femtosecond Solvent Dynamics Studied by Time Resolved Fluorescence and Transient Birefringence.","authors":"S. Rosenthal, N. Scherer, M. Cho, X. Xie, M. E. Schmidt, G. Fleming","doi":"10.1007/978-3-642-84910-7_198","DOIUrl":"https://doi.org/10.1007/978-3-642-84910-7_198","url":null,"abstract":"","PeriodicalId":242710,"journal":{"name":"Eighth International Conference on Ultrafast Phenomena","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130325602","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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