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25篇 您的检索式:作者名="Rotermund"
    题名 作者 年代 出处 被引量
1Generation of 84-fs pulses from a mode-locked Tm:CNNGG disordered garnet crystal laser显示文摘A mode-locked laser based on a Tm:CNNGG disordered crystal as an active medium and a single-walled carbon nanotube saturable absorber is demonstrated, operating at a central wavelength of 2018 nm. Transformlimited 84 fs pulses are generated with an average output power of 22 mW at a repetition rate of ~90 MHz.A maximum output power of 98 mW is obtained at a slightly longer pulse duration of 114 fs.ZHONGBEN PAN YICHENG WANG YONGGUANG ZHAO HUALEI YUAN XIAOJUN DAI HUAQIANG CAI JI EUN BAE SUN YOUNG CHOI FABIAN ROTERMUND XAVIER MATEOS JOSEP MARIA SERRES PAVEL LOIKO UWE GRIEBNER VALENTIN PETROV 2018Photonics Research2018,6,8:4
2Recurrence rates after endoscopic resection of large colorectal polyps:A systematic review and meta-analysis显示文摘BACKGROUND Complete polyp resection is the main goal of endoscopic removal of large colonic polyps.Resection techniques have evolved in recent years and endoscopic submucosal dissection(ESD),endoscopic mucosal resection(EMR)with margin ablation,cold snare polypectomy(CSP),cold EMR,and underwater EMR have been introduced.Yet,efficacy of these techniques with regard to local recurrence rates(LRRs)vs traditional hot snare polypectomy and standard EMR remains unclear.AIM To analyze LRR of large colonic polyps in a systematic review and meta-analysis.METHODS MEDLINE,EMBASE,EBM Reviews,and CINAHL were searched for prospective studies reporting LRR or incomplete resection rate(IRR)after colonic polypectomy of polyps≥10 mm,published between January 2011 and July 2021.Primary outcome was LRR for polyps≥10 mm.RESULTS Six thousand nine hundred and twenty-eight publications were identified,of which 34 prospective studies were included.LRR for polyps≥10 mm at up to 12 mo’follow-up was 11.0%(95%CI,7.1%-14.8%;15 studies;4904 polyps).ESD(1.7%;95%CI,0%-3.4%;3 studies,221 polyps)and endoscopic mucosal resection with margin ablation(3.3%;95%CI,2.2%-4.5%;2 studies,947 polyps)significantly reduced LRR vs standard EMR without(15.2%;95%CI,12.5%-18.0%;4 studies,650 polyps)or with unsystematic margin ablation(16.5%;95%CI,15.2%-17.8%;6 studies,3031 polyps).CONCLUSION LRR is significantly lower after ESD or EMR with routine margin ablation;thus,these techniques should be considered standard for endoscopic removal of large colorectal polyps.Other techniques,such as CSP,cold EMR,and underwater EMR require further evaluation in prospective studies before their routine implementation in clinical practice can be recommended.Carola Rotermund Roupen Djinbachian Mahsa Taghiakbari Markus D Enderle Axel Eickhoff Daniel von Renteln 2022World Journal of Gastroenterology2022,28,29:3
3The effects of induced cold torpor on ATPase activity of the turtle,Pseudemys (Chrysemys) picta显示文摘Rotermund A J Privitera C A 1972Comparative Biochemistry and Physiology Part B:Biochemistry and Molecular Biology1972,41,3:1
4Spatiotemporal concentration patterns in a surface reaction: Propagating and standing waves, rotating spirals, and turbulence显示文摘jAKUBITH S ROTERMUND H H ENGEL W 1990Phys Rev Lett1990,65,:1
5Power-scalable sub-100-fs Tm laser at 2.08μm显示文摘We report on a power-scalable sub-100-fs laser in the 2-μm spectral range using a Tm;-doped‘mixed’(Lu,Sc);O;sesquioxide ceramic as an active medium.Pulses as short as 58 fs at 2076 nm with an average output power of 114 mW at a pulse repetition rate of approximately 82.9 MHz are generated by employing single-walled carbon nanotubes as a saturable absorber.A higher average power of 350 m W at 2075 nm is obtained at the expense of the pulse duration(65 fs).A maximum average power of 486 mW is achieved for a pulse duration of 98 fs and an optical conversion efficiency of 22.3%,representing the highest value ever reported from sub-100-fs mode-locked Tm lasers.Li Wang Weidong Chen Yongguang Zhao Hanlin Yang Wei Jing Zhongben Pan Hui Huang Jiachen Liu Ji Eun Bae Fabian Rotermund Pavel Loiko Xavier Mateos Zhengping Wang Xinguang Xu Uwe Griebner Valentin Petrov 2021High Power Laser Science and Engineering2021,9,4:1
6Long - term follow - up and quality of life in patients with intracranial germinoma 显示文摘Martens T Rotermund R Eulenburg ZC 2014Neurosurg Rev2014,37,45:1
7Application of periodically poled stoichiometric LiTaO3 for efficient optical parametric chirped pulse amplification at 1 kHz显示文摘F Rotermund C J Yoon V Petrov 2004Opt Express2004,12,26:1
8Vacuum ultraviolet application of Li2B407 crystals: Generation of 100 fs pulses down to 170 nm 显示文摘Petrov V ROTERMUND F NOACK F 1998J Appl Phys1998,84,:1
9Defect-mediated turbulence in a catalytic surface reaction显示文摘BETA C MIKHAILOV A S ROTERMUND H H ERTL G 2006Europhys Lett2006,75,:1
10Application of periodically poled stoichiometric LiTaOs for efficient optical parametric chirped pulse amplification at 1 kHz 显示文摘Fabian Rotermund Chang Jun Yoon 2004Optics Express2004,12,26:1
11Aggregation dependentabsorption reduction of indocyanine green 显示文摘Weigand R Rotermund F Penzkofer A 1997Journal ofPhysical Chemistry A1997,101,42:1
12Spatiotemporal concentration patterns in a surface reaction:Propagation and standing waves,rotating spirals and turbulence显示文摘JAKUBITH S ROTERMUND H H ENGEL W 1990Phys Rev Lett1990,65,:1
13Femtosecond mode-locked fiber laser employing a hollow optical fiber filled with carbon nanotube dispersion as saturable absorber显示文摘Choi S Y Rotermund F Jung H 0,,24:1
14All-fiber Er-doped dissipative soliton laser based on evanescent field interaction with carbon nanotube saturable absorber显示文摘Im J H Choi S Y Rotermund F 0,,21:1
15Application of the Solid Solution CdxHg1-xGa2S4as a Nonlinear Optical Crystal 显示文摘PETROV V ROTERMUND F 2002Opt Lett2002,27,19:1
16Passively Q-switched femtosecond-laser-written thulium waveguide laser based on evanescent field interaction with carbon nanotubes显示文摘Surface channel waveguides(WGs) were fabricated in a monoclinic Tm^(3+):KLu(WO_4)_2 crystal by femtosecond direct laser writing(fs-DLW). The WGs consisted of a half-ring cladding with diameters of 50 and 60 μm located just beneath the crystal surface. They were characterized by confocal laser microscopy and μ-Raman spectroscopy,indicating a reduced crystallinity and stress-induced birefringence of the WG cladding. In continuous-wave(CW)mode, under Ti:sapphire laser pumping at 802 nm, the maximum output power reached 171.1 mW at 1847.4 nm,corresponding to a slope efficiency η of 37.8% for the 60 μm diameter WG. The WG propagation loss was0.7 0.3 d B∕cm. The top surface of the WGs was spin-coated by a polymethyl methacrylate film containing randomly oriented(spaghetti-like) arc-discharge single-walled carbon nanotubes serving as a saturable absorber based on evanescent field coupling. Stable passively Q-switched(PQS) operation was achieved. The PQS60 μm diameter WG laser generated a record output power of 150 m W at 1846.8 nm with η = 34.6%. The conversion efficiency with respect to the CW mode was 87.6%. The best pulse characteristics(energy/duration)were 105.6 nJ/98 ns at a repetition rate of 1.42 MHz.ESROM KIFLE PAVEL LOIKO JAVIER RODRíGUEZ VáZQUEZ DE ALDANA CAROLINA ROMERO AIRáN RóDENAS SUN YUNG CHOI JI EUN BAE FABIAN ROTERMUND VIKTOR ZAKHAROV ANDREY VENIAMINOV MAGDALENA AGUILó FRANCESC DíAZ UWE GRIEBNER VALENTIN PETROV XAVIER MATEOS 2018Photonics Research2018,6,10:1
17Propagation of electromagnetic waves in stratified media with nonlinearity in both dielectric and magnetic responses 显示文摘Kim K Phung D K Rotermund F 2008Optics Express2008,16,2:1
18A uhv compatible photoelectron emission microscope for applications in surface science 显示文摘ENGEL W KORDESCH M E ROTERMUND H H 1991Ultramicroscopy1991,36,13:1
19Attention improves object representation in visual cortical field potentials显示文摘Rotermund D Taylor K Ernst U.A Kreiter A.K & Pawelzik K.R 0,,32:1
20Femtosecond mode-locked fiber laser employing a hollow optical fiber with carbon nanotube dispersion as saturable absorber 显示文摘S Y Choi F Rotermund H Jung 2009Optics Express2009,17,21:1
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