Browsing by Subject "Harmonic generation"

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  • Hannig, S.; Mielke, J.; Fenske, J.A.; Misera, M.; Beev, N.; Ospelkaus, C.; Schmidt, Piet O. (College Park, MD : American Institute of Physics, 2018)
    We present a highly stable bow-tie power enhancement cavity for critical second harmonic generation (SHG) into the UV using a Brewster-cut β-BaB2O4 (BBO) nonlinear crystal. The cavity geometry is suitable for all UV ...
  • Harth, Anne; Guo, Chen; Cheng, Yu-Chen; Losquin, Arthur; Miranda, Miguel; Mikaelsson, Sara; Heyl, Christoph M.; Prochnow, Oliver; Ahrens, Jan; Morgner, Uwe; L'Huillier, Anne; Arnold, Cord L. (Bristol : Institute of Physics Publishing, 2018)
    We present efficient high-order harmonic generation (HHG) based on a high-repetition rate, few-cycle, near infrared (NIR), carrier-envelope phase stable, optical parametric chirped pulse amplifier (OPCPA), emitting 6 fs ...
  • Zhao, Jing; Lein, Manfred (College Park, MD : American Physical Society, 2013)
    From the numerical solution of the time-dependent Schrödinger equation, we obtain the times of ionization and return of the laser-driven electron in high-order harmonic generation by probing the dynamics with a second ...
  • Muryshev, A.; Shlyapnikov, G.V.; Ertmer, Wolfgang; Sengstock, K.; Lewenstein, M. (American Physical Society, 2002)
    We find two types of moving dark soliton textures in elongated condensates: nonstationary kinks and proper dark solitons. The latter have a flat notch region and we obtain the diagram of their dynamical stability. At finite ...
  • Chirilä, C.C.; Dreissigacker, Ingo; van der Zwan, Elmar V.; Lein, Manfred (College Park, MD : American Physical Society, 2010)
    We calculate the emission times of the radiation in high-order harmonic generation using the Gabor transform of numerical data obtained from solving the time-dependent Schrödinger equation in one, two, and three dimensions. ...
  • Nolte, Lena; Antonopoulos, Georgios C.; Rämisch, Lisa; Heisterkamp, Alexander; Ripken, Tammo; Meyer, Heiko (Washington, DC : Optical Society of America, 2018)
    Volumetric imaging of connective tissue provides insights into the structure of biological tissue. Second harmonic generation (SHG) microscopy has become a standard method to image collagen rich tissue like skin or cornea. ...
  • Tudorovskaya, Maria; Lein, Manfred (College Park, MD : American Physical Society, 2017)
    The spectrum of a high-repetition train of laser pulses consists of many equally spaced lines, forming an optical frequency comb which is useful for high-precision spectroscopy. By exposing atoms to a train of strong pulses, ...
  • Tudorovskaya, Maria; Lein, Manfred (College Park, MD : American Physical Society, 2011)
    We investigate high-order harmonic generation from laser-irradiated systems that support a shape resonance. From the numerical solution of the time-dependent Schrödinger equation, we calculate the harmonic spectra and the ...
  • Kurz, Heiko G.; Steingrube, Daniel S.; Ristau, Detlev; Lein, Manfred; Morgner, Uwe; Kovacev, Milutin (College Park, MD : American Physical Society, 2013)
    We report on high-order-harmonic generation from micrometer-sized liquid water droplets. In pump-probe experiments, the influence of the time delay onto the emission of harmonic radiation is systematically studied. ...
  • Shi, Liping; Andrade, Jose R.C.; Kim, Hyunwoong; Han, Seunghwoi; Nicolas, Rana; Franz, Dominik; Boutu, Willem; Heidenblut, Torsten; Segerink, Frans B.; Bastiaens, Bert; Merdji, Hamed; Kim, Seung-Woo; Morgner, Uwe; Kovačev, Milutin (American Institute of Physics Inc., 2017)
    We propose to use diabolo nanoantennas for experimentally investigating the origin of the enhanced third harmonic generation by localized surface plasmon polaritons. In such a geometry, the opposing apexes of bowties are ...
  • Nolte, Lena; Antonopoulos, Georgios C.; Heisterkamp, Alexander; Ripken, Tammo; Meyer, Heiko (Bellingham, WA : S P I E - International Society for Optical Engineering, 2018)
    Scanning laser optical tomography (SLOT) is a 3D imaging technique, based on the principle of computed tomography to visualize samples up to magnitude of several centimeters. Intrinsic contrast mechanisms as absorption, ...
  • van der Zwan, Elmar V.; Lein, Manfred (College Park, MD : American Physical Society, 2012)
    Accurate molecular imaging via high-order harmonic generation relies on comparing harmonic emission from a laser-irradiated molecule and an adequate reference system. However, an ideal reference atom with the same ionization ...
  • Henkel, Jost; Witting, Tobias; Fabris, Davide; Lein, Manfred; Knight, Peter L.; Tisch, John W.G.; Marangos, Jonathan P. (College Park, MD : American Physical Society, 2013)
    Attosecond light pulses within the vacuum ultraviolet (VUV) energy range are predicted by solving the time-dependent Schrödinger equation (TDSE) for a model neon atom in short laser pulses of different field polarization ...
  • van der Zwan, Elmar V.; Lein, Manfred (College Park, MD : American Physical Society, 2010)
    We present a theoretical investigation into the two-center interference in aligned H2+. The influence of the laser field on the recombination step is investigated by comparing laser-induced harmonic generation with harmonic ...
  • Falge, Mirjam; Engel, Volker; Lein, Manfred (College Park, MD : American Physical Society, 2010)
    We report calculations on high-order harmonic generation in water molecules. Spectra are determined for various initial vibrational states of H2O and its isotope D2O. It is demonstrated that the ratio of the spectra for ...