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Advances in Laser Science-I最新文献

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Laser resonance saturation 激光共振饱和
Advances in Laser Science-I Pub Date : 2008-06-05 DOI: 10.1063/1.35819
R. Measures, M. Cappelli, R. S. Kissack, S. K. Wong
{"title":"Laser resonance saturation","authors":"R. Measures, M. Cappelli, R. S. Kissack, S. K. Wong","doi":"10.1063/1.35819","DOIUrl":"https://doi.org/10.1063/1.35819","url":null,"abstract":"We have developed a simplified collisional‐radiative computer code for modeling the ionization of sodium vapor by a short pulse of intense laser radiation tuned to saturate one of the resonance transitions. This code predicts that plasma temperatures somewhat lower than had been previously expected can be produced when attenuation of the laser pulse is taken into account. We have confirmed these results in a preliminary experiment using a sodium heat sandwich oven that provides 360° optical access.","PeriodicalId":298672,"journal":{"name":"Advances in Laser Science-I","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131602972","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
Two photon sesquential absorption spectroscopy of the E(O+) state of iodine monofluoride 单氟化碘E(O+)态的双光子序列吸收光谱
Advances in Laser Science-I Pub Date : 2008-06-05 DOI: 10.1063/1.35727
B. Clark, I. M. Littlewood
{"title":"Two photon sesquential absorption spectroscopy of the E(O+) state of iodine monofluoride","authors":"B. Clark, I. M. Littlewood","doi":"10.1063/1.35727","DOIUrl":"https://doi.org/10.1063/1.35727","url":null,"abstract":"The energy levels of a new state of iodine monofluoride lying 5eV above the ground state have been measured using the Two Photon Sequential Absorption (TPSA) technique. The energies of eleven vibrational levels of the state were measured. The state has O+ character, and dissociates to I++F− in the diabatic approximation.","PeriodicalId":298672,"journal":{"name":"Advances in Laser Science-I","volume":"233 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115218779","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 and relaxation dynamics of diatomic molecules in condensed phases 凝聚态双原子分子的复合和弛豫动力学
Advances in Laser Science-I Pub Date : 2008-06-05 DOI: 10.1063/1.35905
N. A. Abul‐Haj, D. F. Kelley
{"title":"Recombination and relaxation dynamics of diatomic molecules in condensed phases","authors":"N. A. Abul‐Haj, D. F. Kelley","doi":"10.1063/1.35905","DOIUrl":"https://doi.org/10.1063/1.35905","url":null,"abstract":"Picosecond absorption kinetics of I2 and Br2 in room temperature CCl4 are presented. Several probe wavelengths were used following excitation with 30ps pulses of 532nm light. The results indicate that population of the electronically excited A(3πlu) and A’(3π2u) states occur rapidly (<30ps) following dissociation. Analysis of transient absorption intensities indicates that repopulation of the ground electronic state of I2 requires about 30–50ps. The difference in population times may be understood in terms of trapping in weakly bound electronic states (perhaps 3π0–u) which relax to populate the ground state, or in terms of slow atom recombination into the ground state. Vibrational relaxation rates through the ground state manifoeld were interpreted in terms of vibration to translation energy transfer as given by the Schwartz, Slawsky, Herzfeld theory.","PeriodicalId":298672,"journal":{"name":"Advances in Laser Science-I","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121388152","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
Amplified spontaneous emission studies in xenon 氙的放大自发辐射研究
Advances in Laser Science-I Pub Date : 2008-06-05 DOI: 10.1063/1.35781
M. Rankin, L. Bobb, J. Davis, C. Giranda
{"title":"Amplified spontaneous emission studies in xenon","authors":"M. Rankin, L. Bobb, J. Davis, C. Giranda","doi":"10.1063/1.35781","DOIUrl":"https://doi.org/10.1063/1.35781","url":null,"abstract":"Measurements of the spectral width of 828 nm amplified spontaneous emission (ASE) in xenon give line widths of 1.0‐2.5 GHz, larger than the Doppler value 397 MHz expected for spontaneous emission of the fluorescence. Maxwell‐Bloch model simulations of ASE events are compared with experimental results. Agreement to within a geometry‐related scale factor is found.","PeriodicalId":298672,"journal":{"name":"Advances in Laser Science-I","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123654276","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
Vibrational predissociation spectroscopy of molecular clusters 分子团簇的振动预解离光谱
Advances in Laser Science-I Pub Date : 2008-06-05 DOI: 10.1063/1.35717
J. Lisy
{"title":"Vibrational predissociation spectroscopy of molecular clusters","authors":"J. Lisy","doi":"10.1063/1.35717","DOIUrl":"https://doi.org/10.1063/1.35717","url":null,"abstract":"The vibrational spectra for a number of van der Waals and hydrogen‐bonded clusters have been obtained using a tunable infrared laser in the 2.5 to 4.0 μ range. The spectra were observed via vibrational predissociation in a molecular beam apparatus. The results permitted structural assignments to be made for Ar‐C2H4 and (HF)3. The dependence of the predissociation dynamics on structure, vibrational mode, molecular complexity and binding energy has been examined. No evidence for rapid (≲25 psec) predissociation or vibrational relaxation has been observed for binary complexes. However, there appears to be a rapid relaxation process for (HF)3.","PeriodicalId":298672,"journal":{"name":"Advances in Laser Science-I","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122997693","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
Color center laser spesctroscopy of free radicals 自由基的色心激光光谱
Advances in Laser Science-I Pub Date : 2008-06-05 DOI: 10.1063/1.35721
C. B. Dane, W. Yan, D. Zeitz, Jeffrey L. Hall, R. Curl, J. Kasper, F. Tittel
{"title":"Color center laser spesctroscopy of free radicals","authors":"C. B. Dane, W. Yan, D. Zeitz, Jeffrey L. Hall, R. Curl, J. Kasper, F. Tittel","doi":"10.1063/1.35721","DOIUrl":"https://doi.org/10.1063/1.35721","url":null,"abstract":"High resolution infrared spectra of free radicals are obtained when an electrical discharge occurs through Ar over a coating of polyacetylene. A computer‐controlled color center laser was used as the excitation source. (AIP)","PeriodicalId":298672,"journal":{"name":"Advances in Laser Science-I","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126466487","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
Applications of stimulated Raman scattering in laser systems 受激拉曼散射在激光系统中的应用
Advances in Laser Science-I Pub Date : 2008-06-05 DOI: 10.1063/1.35775
H. Komine, W. Long, S. Brosnan, E. Stappaerts
{"title":"Applications of stimulated Raman scattering in laser systems","authors":"H. Komine, W. Long, S. Brosnan, E. Stappaerts","doi":"10.1063/1.35775","DOIUrl":"https://doi.org/10.1063/1.35775","url":null,"abstract":"The property of Raman amplifiers for producing good beam quality Stokes output is investigated experiemntally. The theoretical basis of this effect is discussed.","PeriodicalId":298672,"journal":{"name":"Advances in Laser Science-I","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116774013","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
Spectroscopic, optical, and thermo-mechanical properties of GSGG and its laser performance GSGG的光谱、光学和热力学性能及其激光性能
Advances in Laser Science-I Pub Date : 2008-06-05 DOI: 10.1063/1.35757
W. Krupke
{"title":"Spectroscopic, optical, and thermo-mechanical properties of GSGG and its laser performance","authors":"W. Krupke","doi":"10.1063/1.35757","DOIUrl":"https://doi.org/10.1063/1.35757","url":null,"abstract":"Spectroscopic, optical, and thermo‐mechanical properties central to the design of high average power Nd:Cr:GSGG lasers are presented. The status of crystal growth and achieved laser performance levels are briefly reviewed.","PeriodicalId":298672,"journal":{"name":"Advances in Laser Science-I","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121627524","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: 2
Picosecond time resolved studies of nonradiative relaxation in ruby and alexandrite 红宝石和翠绿宝石非辐射弛豫的皮秒时间分辨研究
Advances in Laser Science-I Pub Date : 2008-06-05 DOI: 10.1063/1.35854
S. Gayen, Wubao B. Wang, V. Petričević, R. Alfano
{"title":"Picosecond time resolved studies of nonradiative relaxation in ruby and alexandrite","authors":"S. Gayen, Wubao B. Wang, V. Petričević, R. Alfano","doi":"10.1063/1.35854","DOIUrl":"https://doi.org/10.1063/1.35854","url":null,"abstract":"Dynamics of the nonradiative transitions between the 4T2 pump band and the 2E storage level of the trivalent chromium ion in ruby and alexandrite crystals is studied using the picosecond excite‐and‐probe absorption technique. A 527‐nm picosecond pulse excites the 4T2 state of the Cr3+ ion, and an infrared picosecond probe pulse monitors the subsequent growth and decay of population in the excited states as a function of pump‐probe delay. An upper limit of 7 ps is determined for the nonradiative lifetime of the 4T2 state in ruby. A vibrational relaxation time of 25 ps for the 4T2 band in alexandrite is estimated. The time to attain thermal equilibrium population between the 2E and 4T2 levels of alexandrite following excitation of the 4T2 band is estimated to be ∼100 ps.","PeriodicalId":298672,"journal":{"name":"Advances in Laser Science-I","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114774412","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
Picosecond laser induced nonlinear excitation of semiconductors 皮秒激光诱导半导体的非线性激发
Advances in Laser Science-I Pub Date : 2008-06-05 DOI: 10.1063/1.35853
W. Bron
{"title":"Picosecond laser induced nonlinear excitation of semiconductors","authors":"W. Bron","doi":"10.1063/1.35853","DOIUrl":"https://doi.org/10.1063/1.35853","url":null,"abstract":"A review is presented on the results of recent investigations of laser excitation, and subsequent decay, of a coherent optical phonon state in III‐V semiconductors.","PeriodicalId":298672,"journal":{"name":"Advances in Laser Science-I","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130802063","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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