TY  - JOUR
A1  - Fleischhaker, Robert
A1  - Evers, Jörg
T1  - Phase-controlled pulse propagation in media with cross coupling of electric and magnetic probe field component
JF  - Physical Review A - Atomic, molecular, and optical physics
Y1  - 2009
U6  - http://dx.doi.org/10.1103/PHYSREVA.80.063816
SN  - 1050-2947
VL  - 80
IS  - 6
SP  - 063816
ER  - 
TY  - JOUR
A1  - Fleischhaker, Robert
A1  - Evers, Jörg
A1  - Dey, Tarak N.
T1  - Phase modulation induced by cooperative effects in electromagnetically induced transparency
JF  - Physical Review A - Atomic, molecular, and optical physics
N2  - 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.
Y1  - 2010
U6  - http://dx.doi.org/10.1103/PhysRevA.82.013815
SN  - 1050-2947
VL  - 82
IS  - 1
PB  - AIP Publishing
CY  - Melville, NY
ER  - 
TY  - JOUR
A1  - Fleischhaker, Robert
A1  - Evers, Jörg
T1  - Nonlinear effects in pulse propagation through Doppler-broadened closed-loop atomic media
JF  - Physical Review A - Atomic, molecular, and optical physics
Y1  - 2008
U6  - http://dx.doi.org/10.1103/PhysRevA.77.043805
SN  - 1050-2947
VL  - 77
IS  - 4
SP  - 043805
ER  - 
TY  - THES
A1  - Fleischhaker, Robert
T1  - Light propagation in dense and chiral media
Y1  - 2009
N1  - Heidelberg, Univ., Diss., 2009
ER  - 
TY  - CHAP
A1  - Evers, Jörg
A1  - Fleischhaker, Robert
A1  - Pálffy, A.
A1  - Keitel, C.
T1  - Light propagation : From atomic to nuclear quantum optics
T2  - Modern optics and photonics: atoms and structured media
Y1  - 2010
SN  - 978-981431327-8
U6  - http://dx.doi.org/10.1142/9789814313278_0001
SP  - 3
EP  - 15
PB  - World Scientific Publishing Co.
ER  - 
TY  - CHAP
A1  - Heckl, O. H.
A1  - Weiler, Sascha
A1  - Fleischhaker, Robert
A1  - Gebs, Raphael
A1  - Budnicki, Aleksander
A1  - Wolf, M.
A1  - Kleinbauer, Jochen
A1  - Russ, S.
A1  - Kumkar, M.
A1  - Sutter, Dirk H.
ED  - Heisterkamp, Alexander
ED  - Herman, Peter R.
ED  - Meunier, Michael
ED  - Nolte, Stefan
T1  - Industry-grade high average power femtosecond light source
T2  - Frontiers in ultrafast optics: Biomedical, scientific, and industrial applications XIV : 1 Februar 2014, San Francisco, USA. - (SPIE proceedings series ; 8972)
Y1  - 2014
U6  - http://dx.doi.org/10.1117/12.2039337
N1  - Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XIV <2, 2014, San Francisco, CA>
SP  - 89720P
EP  - 89720P-7
PB  - SPIE, International Society for Optical Engineering
ER  - 
TY  - CHAP
A1  - Pricking, Sebastian
A1  - Gebs, Raphael
A1  - Fleischhaker, Robert
A1  - Kleinbauer, Jochen
A1  - Budnicki, Aleksander
A1  - Sutter, Dirk
A1  - Killi, Alexander
A1  - Weiler, Sascha
A1  - Mielke, M.
A1  - Beaudou, B.
A1  - Debord, B.
A1  - Gerome, F.
A1  - Benabid, F.
ED  - Dorsch, Friedhelm
T1  - Hollow core fiber delivery of sub-ps pulses from a TruMicro 5000 Femto edition thin disk amplifier
T2  - High-power laser materials processing: Lasers, beam delivery, diagnostics, and applications IV : 7 Februar 2015, San Francisco, USA. - (SPIE proceedings series ; 9356)
Y1  - 2015
SN  - 978-162841446-2
U6  - http://dx.doi.org/10.1117/12.2079289
SN  - 0277-786X
SP  - 935602
PB  - SPIE, International Society for Optical Engineering
ER  - 
TY  - JOUR
A1  - Mahmoudi, Mohammad
A1  - Fleischhaker, Robert
A1  - Sahrai, Mostafa
A1  - Evers, Jörg
T1  - Group velocity control in the ultraviolet domain via interacting dark-state resonances
JF  - Journal of physics B: Atomic, molecular and optical physics
Y1  - 2008
U6  - http://dx.doi.org/10.1088/0953-4075/41/2/025504
SN  - 0953-4075
SN  - 1361-6455
VL  - 41
IS  - 2
SP  - 25504
EP  - 25600
ER  - 
TY  - JOUR
A1  - Fleischhaker, Robert
A1  - Evers, Jörg
T1  - Four-wave mixing enhanced white-light cavity
JF  - Physical Review A - Atomic, molecular, and optical physics
Y1  - 2008
SN  - 0556-2791
VL  - 78
IS  - 5
SP  - 051802(R)
ER  - 
TY  - JOUR
A1  - Schüller-Ruhl, Aaron
A1  - Dinstühler, Leonard
A1  - Senger, Thorsten
A1  - Bergfeld, Stefan
A1  - Ingenhag, Christian
A1  - Fleischhaker, Robert
ED  - Mackenzie, Jacob
T1  - Direct fabrication of arbitrary phase masks in optical glass via ultra-short pulsed laser writing of refractive index modifications
JF  - Applied Physics B
N2  - 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.
Y1  - 2022
U6  - http://dx.doi.org/10.1007/s00340-022-07928-2
SN  - 1432-0649 (Online)
SN  - 0946-2171 (Print)
N1  - Corresponding author: Robert Fleischhaker
VL  - 128
IS  - Article number: 208
SP  - 1
EP  - 11
PB  - Springer
CY  - Berlin
ER  -