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| 1 | Enhancing precision in fs-laser material processing by simultaneous spatial and temporal focusing显示文摘In recent years,femtosecond(fs)-lasers have evolved into a versatile tool for high precision micromachining of transparent materials because nonlinear absorption in the focus can result in refractive index modifications or material disruptions.However,when high pulse energies or low numerical apertures are required,nonlinear side effects such as self-focusing,filamentation or white light generation can decrease the modification quality.In this paper,we apply simultaneous spatial and temporal focusing(SSTF)to overcome these limitations.The main advantage of SSTF is that the ultrashort pulse is only formed at the focal plane,thereby confining the intensity distribution strongly to the focal volume and suppressing detrimental nonlinear side effects.Thus,we investigate the optical breakdown within a water cell by pump-probe shadowgraphy,comparing conventional focusing and SSTF under equivalent focusing conditions.The plasma formation is well confined for low pulse energies,2 mJ,but higher pulse energies lead to the filamentation and break-up of the disruptions for conventional focusing,thereby decreasing the modification quality.In contrast,plasma induced by SSTF stays well confined to the focal plane,even for high pulse energies up to 8 mJ,preventing extended filaments,side branches or break-up of the disruptions.Furthermore,while conventional focusing leads to broadband supercontinuum generation,only marginal spectral broadening is observed using SSTF.These experimental findings are in excellent agreement with numerical simulations of the nonlinear pulse propagation and interaction processes.Therefore,SSTF appears to be a powerful tool to control the processing of transparent materials,e.g.,for precise ophthalmic fs-surgery. | Robert Kammel Roland Ackermann Jens Thomas Jorg Gotte Stefan Skupin Andreas Tunnermann Stefan Nolte | 2014 | Light(Science & Applications)2014，3，1： | 11 |
| 2 | Local produc4ion of interleukin-4 during radiation-induced pneumonitis and pulmonary fibrosis in rats: macrophages as a prominent source of interleukin-4显示文摘 | Buttner C Skupin A Reimann T | 1997 | Am J Respir Cell Mol Biol1997，17，3： | 1 |
| 3 | Spatialization Methods:A Cartographic Research Agenda for Non-Geographic Information Visualization显示文摘 | Fabrikant S | 2003 | Cartography and Geographic Information Science2003，30，2： | 1 |
| 4 | Stability of Two-dimensional Spatial Solitons in Nonlocal Nonlinear Media显示文摘 | SKUPIN S BANG O EDMUNDSON D | 2006 | Phy Rev E2006，73，06： | 1 |
| 5 | Do Vascular Compartments Differ in the Development of Chronic Rejection? AT (1) Blocker Candesartan Versus ACE Blocker Enalapril in an Experimental Heart Transplant Model 显示文摘 | Richter M Richter H Skupin M | 2001 | Heart Lung Transplant2001，20，： | 1 |
| 6 | Rotating Soliton Solutions in Nonlocal Nonlinear Media显示文摘 | SKUPIN S GRECH M KROLIKOWSKI W | 2008 | Opt Express2008，16，： | 1 |
| 7 | Ultrashort filaments of light in weakly-ionized, optically-transparent media显示文摘 | Berge L Skupin S Nuter R | 2007 | Reports on Progress in Physics2007，6，3： | 1 |
| 8 | Discrete and Continuous Conceptualizations of Science : Implications for Knowledge Domain Visualization 显示文摘 | Skupin A | 2009 | Journal of lnformetrics2009，3，3： | 1 |
| 9 | Local production of interleukin-4 during radiation-induced pneumonitis and pulmonary fibrosis in rats: Macrophages as a prominent source of interleukkin-4显示文摘 | Buttner C Skupin A Reimann T | 1997 | Cell Mol Biol1997，17，3： | 1 |
| 10 | Key parameters affecting the initial release(burst)and encapsulation efficiency of peptide-containing poly(lactide-co-glycolide)microparticles显示文摘 | Luan X Skupin M Siepmann J | | 0，，02： | 1 |
| 11 | Ultrashort filaments of light in weakly ionized, optically transparent media 显示文摘 | Berg6 L Skupin S Nuter R | 2008 | Reports on Progress in Physics2008，71，10： | 1 |
| 12 | 显示文摘 | Prigann J Tolksdorf Ch Skupin H | 2002 | Macromolecules2002，35，： | 1 |
| 13 | Do vascular compartments differ in the development of chronic rejection? AT (1) blocker candesartan versus ACEblocker enalapril in an experimental heart transplant model显示文摘 | Richter M Richter H Skupin M Mohr FW Olbrich HG | | 0，，： | 1 |
| 14 | Clustering of InsP3 receptors by InsP3 retunes their regulation by InsP3 and Ca2+ 显示文摘 | Rahman T U Skupin A Falcke M | 2009 | Nature2009，458，： | 1 |
| 15 | Ultrashort filaments of light in weakly ionized,optically transparent media显示文摘 | BERGE L SKUPIN S NUTER R | 2007 | Reports Progress in Physics2007，70，10： | 1 |
| 16 | Discrete and Continuous Conceptualizations of Science:Implications for Knowledge Domain Visualization显示文摘 | Skupin A | 2009 | Journal of Informetrics2009，，3： | 1 |
| 17 | Spectroscopic diagnostics on CW-laser welding plasmas of aluminum alloys 显示文摘 | PALANCO S KLASSEN M SKUPIN J | 2001 | Spectrochimica Acta Part B2001，56，： | 1 |
| 18 | Single cell protein as food and feed显示文摘 | Giec A Skupin J | 1988 | Food/Nahrung1988，32，3： | 1 |
| 19 | Transcriptional activation of the type Ⅰ collagen genes COL1A1 and COL1A2 in fibroblasts by interleukin-4: analysis of the functional collagen promoter sequences显示文摘 | Buttner C Skupin A Rieber EP | 2004 | J Cell Physiol2004，198，2： | 1 |
| 20 | Ultrashort filaments of light in weakly ionized,optically transparent media显示文摘 | Bergé L Skupin S Nuter R | | 0，，10： | 1 |
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