@article{FleischhakerEversDey2010,
  author    = {Fleischhaker, Robert and Evers, J{\"o}rg and Dey, Tarak N.},
  title     = {Phase modulation induced by cooperative effects in electromagnetically induced transparency},
  series = {Physical Review A - Atomic, molecular, and optical physics},
  volume    = {82},
  journal   = {Physical Review A - Atomic, molecular, and optical physics},
  number    = {1},
  publisher = {AIP Publishing},
  address   = {Melville, NY},
  issn      = {1050-2947},
  doi       = {10.1103/PhysRevA.82.013815},
  pages     = {013815},
  year      = {2010},
  abstract  = {We analyze the influence of dipole-dipole interactions in an electromagnetically induced transparency set up for a density at the onset of cooperative effects. To this end, we include mean-field models for the influence of local-field corrections and radiation trapping into our calculation. We show both analytically and numerically that the polarization contribution to the local field strongly modulates the phase of a weak pulse. We give an intuitive explanation for this local-field-induced phase modulation and demonstrate that it distinctively differs from the nonlinear self-phase-modulation that a strong pulse experiences in a Kerr medium.},
  language  = {en}
}
@article{FleischhakerEvers2008,
  author    = {Fleischhaker, Robert and Evers, J{\"o}rg},
  title     = {Nonlinear effects in pulse propagation through Doppler-broadened closed-loop atomic media},
  series = {Physical Review A - Atomic, molecular, and optical physics},
  volume    = {77},
  journal   = {Physical Review A - Atomic, molecular, and optical physics},
  number    = {4},
  issn      = {1050-2947},
  doi       = {10.1103/PhysRevA.77.043805},
  pages     = {043805},
  year      = {2008},
  language  = {en}
}
@phdthesis{Fleischhaker2009,
  author    = {Fleischhaker, Robert},
  title     = {Light propagation in dense and chiral media},
  year      = {2009},
  language  = {en}
}
@incollection{EversFleischhakerPalffyetal.2010,
  author    = {Evers, J{\"o}rg and Fleischhaker, Robert and P{\´a}lffy, A. and Keitel, C.},
  title     = {Light propagation : From atomic to nuclear quantum optics},
  series = {Modern optics and photonics: atoms and structured media},
  booktitle = {Modern optics and photonics: atoms and structured media},
  publisher = {World Scientific Publishing Co.},
  isbn      = {978-981431327-8},
  doi       = {10.1142/9789814313278_0001},
  pages     = {3 -- 15},
  year      = {2010},
  language  = {en}
}
@article{MahmoudiFleischhakerSahraietal.2008,
  author    = {Mahmoudi, Mohammad and Fleischhaker, Robert and Sahrai, Mostafa and Evers, J{\"o}rg},
  title     = {Group velocity control in the ultraviolet domain via interacting dark-state resonances},
  series = {Journal of physics B: Atomic, molecular and optical physics},
  volume    = {41},
  journal   = {Journal of physics B: Atomic, molecular and optical physics},
  number    = {2},
  issn      = {0953-4075},
  doi       = {10.1088/0953-4075/41/2/025504},
  pages     = {25504 -- 25600},
  year      = {2008},
  language  = {en}
}
@article{FleischhakerEvers2008,
  author    = {Fleischhaker, Robert and Evers, J{\"o}rg},
  title     = {Four-wave mixing enhanced white-light cavity},
  series = {Physical Review A - Atomic, molecular, and optical physics},
  volume    = {78},
  journal   = {Physical Review A - Atomic, molecular, and optical physics},
  number    = {5},
  issn      = {0556-2791},
  pages     = {051802(R)},
  year      = {2008},
  language  = {en}
}
@article{SchuellerRuhlDinstuehlerSengeretal.2022,
  author    = {Sch{\"u}ller-Ruhl, Aaron and Dinst{\"u}hler, Leonard and Senger, Thorsten and Bergfeld, Stefan and Ingenhag, Christian and Fleischhaker, Robert},
  title     = {Direct fabrication of arbitrary phase masks in optical glass via ultra-short pulsed laser writing of refractive index modifications},
  series = {Applied Physics B},
  volume    = {128},
  journal   = {Applied Physics B},
  number    = {Article number: 208},
  editor    = {Mackenzie, Jacob},
  publisher = {Springer},
  address   = {Berlin},
  issn      = {1432-0649 (Online)},
  doi       = {10.1007/s00340-022-07928-2},
  pages     = {1 -- 11},
  year      = {2022},
  abstract  = {We study the possibility to fabricate an arbitrary phase mask in a one-step laser-writing process inside the volume of an optical glass substrate. We derive the phase mask from a Gerchberg-Saxton-type algorithm as an array and create each individual phase shift using a refractive index modification of variable axial length. We realize the variable axial length by superimposing refractive index modifications induced by an ultra-short pulsed laser at different focusing depth. Each single modification is created by applying 1000 pulses with 15 μJ pulse energy at 100 kHz to a fixed spot of 25 μm diameter and the focus is then shifted axially in steps of 10 μm. With several proof-of-principle examples, we show the feasibility of our method. In particular, we identify the induced refractive index change to about a value of Δn=1.5⋅10-3. We also determine our current limitations by calculating the overlap in the form of a scalar product and we discuss possible future improvements.},
  language  = {en}
}
@article{FleischhakerKraussSchaettigeretal.2013,
  author    = {Fleischhaker, Robert and Krauß, Nico and Sch{\"a}ttiger, Farina and Dekorsy, Thomas},
  title     = {Consistent characterization of semiconductor saturable absorber mirrors with singe-pulse and pump-probe spectroscopy},
  series = {Optics Express},
  volume    = {21},
  journal   = {Optics Express},
  number    = {6},
  publisher = {Optica},
  address   = {Washington, DC},
  issn      = {1094-4087},
  doi       = {10.1364/OE.21.006764},
  pages     = {6764 -- 6776},
  year      = {2013},
  language  = {en}
}
@article{FleischhakerEvers2011,
  author    = {Fleischhaker, Robert and Evers, J{\"o}rg},
  title     = {A Maxwell-Schr{\"o}dinger solver for quantum optical few-level systems},
  series = {Computer Physics Communications},
  volume    = {182},
  journal   = {Computer Physics Communications},
  number    = {3},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0010-4655},
  doi       = {10.1016/j.cpc.2010.10.018},
  pages     = {739 -- 747},
  year      = {2011},
  abstract  = {The msprop program presented in this work is capable of solving the Maxwell-Schr{\"o}dinger equations for one or several laser fields propagating through a medium of quantum optical few-level systems in one spatial dimension and in time. In particular, it allows to numerically treat systems in which a laser field interacts with the medium with both its electric and magnetic component at the same time. The internal dynamics of the few-level system is modeled by a quantum optical master equation which includes coherent processes due to optical transitions driven by the laser fields as well as incoherent processes due to decay and dephasing. The propagation dynamics of the laser fields is treated in slowly varying envelope approximation resulting in a first order wave equation for each laser field envelope function. The program employs an Adams predictor formula second order in time to integrate the quantum optical master equation and a Lax-Wendroff scheme second order in space and time to evolve the wave equations for the fields. The source function in the Lax-Wendroff scheme is specifically adapted to allow taking into account the simultaneous coupling of a laser field to the polarization and the magnetization of the medium. To reduce execution time, a customized data structure is implemented and explained. In three examples the features of the program are demonstrated and the treatment of a system with a phase-dependent cross coupling of the electric and magnetic field component of a laser field is shown.},
  language  = {en}
}