@article{FleischhakerEvers2009, author = {Fleischhaker, Robert and Evers, J{\"o}rg}, title = {Phase-controlled pulse propagation in media with cross coupling of electric and magnetic probe field component}, series = {Physical Review A - Atomic, molecular, and optical physics}, volume = {80}, journal = {Physical Review A - Atomic, molecular, and optical physics}, number = {6}, issn = {1050-2947}, doi = {10.1103/PHYSREVA.80.063816}, pages = {063816}, year = {2009}, language = {en} } @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} } @inproceedings{HecklWeilerFleischhakeretal.2014, author = {Heckl, O. H. and Weiler, Sascha and Fleischhaker, Robert and Gebs, Raphael and Budnicki, Aleksander and Wolf, M. and Kleinbauer, Jochen and Russ, S. and Kumkar, M. and Sutter, Dirk H.}, title = {Industry-grade high average power femtosecond light source}, series = {Frontiers in ultrafast optics: Biomedical, scientific, and industrial applications XIV : 1 Februar 2014, San Francisco, USA. - (SPIE proceedings series ; 8972)}, booktitle = {Frontiers in ultrafast optics: Biomedical, scientific, and industrial applications XIV : 1 Februar 2014, San Francisco, USA. - (SPIE proceedings series ; 8972)}, editor = {Heisterkamp, Alexander and Herman, Peter R. and Meunier, Michael and Nolte, Stefan}, publisher = {SPIE, International Society for Optical Engineering}, doi = {10.1117/12.2039337}, pages = {89720P -- 89720P-7}, year = {2014}, language = {en} } @inproceedings{PrickingGebsFleischhakeretal.2015, author = {Pricking, Sebastian and Gebs, Raphael and Fleischhaker, Robert and Kleinbauer, Jochen and Budnicki, Aleksander and Sutter, Dirk and Killi, Alexander and Weiler, Sascha and Mielke, M. and Beaudou, B. and Debord, B. and Gerome, F. and Benabid, F.}, title = {Hollow core fiber delivery of sub-ps pulses from a TruMicro 5000 Femto edition thin disk amplifier}, series = {High-power laser materials processing: Lasers, beam delivery, diagnostics, and applications IV : 7 Februar 2015, San Francisco, USA. - (SPIE proceedings series ; 9356)}, booktitle = {High-power laser materials processing: Lasers, beam delivery, diagnostics, and applications IV : 7 Februar 2015, San Francisco, USA. - (SPIE proceedings series ; 9356)}, editor = {Dorsch, Friedhelm}, publisher = {SPIE, International Society for Optical Engineering}, organization = {The international society for optical engineering, SPIE <2, 2015, San Francisco, CA>}, isbn = {978-162841446-2}, issn = {0277-786X}, doi = {10.1117/12.2079289}, pages = {935602}, year = {2015}, 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} }