Auflistung nach Schlagwort "Ultrafast lasers"

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  • Biodegradable microsphere-mediated cell perforation in microfluidic channel using femtosecond laser 
    Ishii, Atsuhiro; Ariyasu, Kazumasa; Mitsuhashi, Tatsuki; Heinemann, Dag; Heisterkamp, Alexander; Terakawa, Mitsuhiro (Bellingham, WA : S P I E - International Society for Optical Engineering, 2016)
    The use of small particles has expanded the capability of ultrashort pulsed laser optoinjection technology toward simultaneous treatment of multiple cells. The microfluidic platform is one of the attractive systems that ...
  • Dispersion-engineered multi-pass cell for single-stage post-compression of an ytterbium laser 
    Silletti, Laura; bin Wahid, Ammar; Escoto, Esmerando; Balla, Prannay; Rajhans, Supriya; Horn, Katinka; Winkelmann, Lutz; Wanie, Vincent; Trabattoni, Andrea; Heyl, Christoph M.; Calegari, Francesca (Washington, DC : Soc., 2023)
    Post-compression methods for ultrafast laser pulses typically face challenging limitations, including saturation effects and temporal pulse breakup, when large compression factors and broad bandwidths are targeted. To ...
  • Electrical and optical properties linked to laser damage behavior in conductive thin film materials 
    Steinecke, Morten; Naran, Tank Ankit; Keppler, Nils Christian; Behrens, Peter; Jensen, Lars; Jupé, Marco; Ristau, Detlev (Washington, DC : OSA - The Optical Society, 2021)
    Epsilon-near-zero-materials (ENZ-materials) and their unique properties are key to the successful integration and miniaturization of optical components. Novel concepts, which promise significant progress in this field of ...
  • Fast-tunable femtosecond visible radiation via sum-frequency generation from a high power NIR NOPO 
    Binhammer, Yuliya; Binhammer, Thomas; Mevert, Robin; Lang, Tino; Rück, Angelika; Morgner, Uwe (Washington, DC : Optica, 2021)
    We report on a high power ultra-broadband, quickly tunable non-collinear parametric oscillator with highly efficient intra-cavity sum-frequency generation. It simultaneously delivers femtosecond pulses in two synchronized ...
  • Femtosecond Field-Driven On-Chip Unidirectional Electronic Currents in Nonadiabatic Tunneling Regime 
    Shi, Liping; Babushkin, Ihar; Husakou, Anton; Melchert, Oliver; Frank, Bettina; Yi, Juemin; Wetzel, Gustav; Demircan, Ayhan; Lienau, Christoph; Giessen, Harald; Ivanov, Misha; Morgner, Uwe; Kovacev, Milotin (Weinheim : Wiley VCH, 2021)
    Recently, asymmetric plasmonic nanojunctions have shown promise as on-chip electronic devices to convert femtosecond optical pulses to current bursts, with a bandwidth of multi-terahertz scale, although yet at low temperatures ...
  • Generation of sub cycle terahertz pulses via coherent control of nonlinear medium by femtosecond pulses 
    Arkhipov, R.M.; Arkhipov, M.V.; Pakhomov, A.V.; Babushkin, I.; Demircan, A.; Morgner, Uwe; Rosanov, N.N. (Bristol : IOP Publishing Ltd., 2020)
    In this paper, we revise our recent advances in study of high-efficient methods of sub cycle THz pulse generation and control of their wave shape. These methods are based on coherent control of low frequency oscillations ...
  • Highly reconfigurable hybrid laser based on an integrated nonlinear waveguide 
    Aadhi, A.; Kovalev, Anton V.; Kues, Michael; Roztocki, Piotr; Reimer, Christian; Zhang, Yanbing; Wang, Tao; Little, Brent E.; Chu, Sai T.; Wang, Zhiming; Moss, David J.; Viktorov, Evgeny A.; Morandotti, Roberto (Washington, DC : Optica, 2019)
    The ability of laser systems to emit different adjustable temporal pulse profiles and patterns is desirable for a broad range of applications. While passive mode-locking techniques have been widely employed for the realization ...
  • Laser cutting of CFRP with a fibre guided high power nanosecond laser source - Influence of the optical fibre diameter on quality and efficiency 
    Bluemel, S.; Bastick, S.; Staehr, R.; Jaeschke, P.; Suttmann, O.; Overmeyer, L. (Amsterdam : Elsevier B.V., 2016)
    For the development of a robot based laser cutting process of automotive 3D parts consisting of carbon fibre reinforced plastics (CFRP), investigations with a newly developed fibre guided nanosecond pulsed laser with an ...
  • Picosecond laser filamentation in air 
    Schmitt-Sody, Andreas; Kurz, Heiko G.; Bergé, Luc; Skupin, Stefan; Polynkin, Pavel (Bristol : Institute of Physics Publishing, 2016)
    The propagation of intense picosecond laser pulses in air in the presence of strong nonlinear self-action effects and air ionization is investigated experimentally and numerically. The model used for numerical analysis is ...
  • Production of chip breakers on cemented carbide tools using laser ablation 
    Denkena, Berend; Krödel, Alexander; Ellersiek, Lars; Murrenhoff, Marita (Amsterdam : Elsevier B.V., 2020)
    Chip breakers are essential for achieving reproducible and safe turning processes. In case of cemented carbide tools with standard ISO geometries, they are manufactured by form pressing before sintering. In form turning ...
  • Robot based remote laser cutting of three-dimensional automotive composite parts with thicknesses up to 5mm 
    Bluemel, S.; Bastick, S.; Staehr, R.; Jaeschke, P.; Suttmann, O.; Kaierle, Stefan; Overmeyer, Ludger (Amsterdam : Elsevier B.V., 2018)
    With the intention to develop a robot based laser cutting process for automotive 3D parts with varying thickness consisting of carbon fibre reinforced plastics (CFRP), strategies of 2D investigations were adapted. The used ...
  • Surface functionalization under water using picosecond and femtosecond laser pulses - first observations and novel effects 
    Koch, Jürgen; Taschner, Sebastian; Suttmann, Oliver; Kaierle, Stefan (Amsterdam : Elsevier B.V., 2018)
    Functionalization by changing the topography of workpiece surfaces is interesting for many applications. Lasers - especially ultrashort pulse lasers - are flexible tools for this kind of tasks. Besides deterministic ...
  • Terahertz pulse generation by two-color laser fields with circular polarization 
    Tailliez, C.; Stathopulos, A.; Skupin, S.; Buožius, D.; Babushkin, I.; Vaičaitis, V.; Bergé, L. (Bristol : IOP Publishing Ltd., 2020)
    We study the influence of the polarization states of ionizing femtosecond two-color pulses on the emitted terahertz radiation in gases. A local-current model and plane-wave evaluations justify the previously-reported impact ...
  • Ultrafast lasers in ophthalmology 
    Lubatschowski, Holger (Amsterdam : Elsevier B.V., 2010)
    Ultrafast laser pulses have become a promising tool for microsurgery of the eye. Due to the low energy threshold, side effects are limited to the micrometer range This precision enables the use of ultrashort laser pulses ...
  • Ultrahigh bandwidth spin noise spectroscopy: Detection of large g-factor fluctuations in highly-n-doped GaAs 
    Berski, Fabian; Kuhn, Hendrik; Lonnemann, Jan G.; Hübner, Jens; Oestreich, Michael (College Park, MD : American Physical Society, 2013)
    We advance all optical spin noise spectroscopy (SNS) in semiconductors to detection bandwidths of several hundred gigahertz by employing a sophisticated scheme of pulse trains from ultrafast laser oscillators as an optical ...
  • Ultrashort pulse CPA-free Ho:YLF linear amplifier 
    Hinkelmann, Moritz; Wandt, Dieter; Morgner, Uwe; Neumann, Jörg; Kracht, Dietmar (Bellingham, WA : S P I E - International Society for Optical Engineering, 2018)
    We present CPA-free linear amplification of 6:3 ps pulses in Ho:YLF crystals up to 100 μJ pulse energy at 10 kHz repetition rate. The seed pulses at a wavelength of 2:05 μm are provided by a Ho-based all-fiber system ...