| WA - Cavities and Dissipative Effects,
Wednesday, 7 September 2005, 8:30 a.m.–10:00 a.m. |
WA2 - 9:00 a.m.
Cavity
Solitons in Driven VCSELs above Threshold: Theory and Experiment
Giovanna Tissoni et al.
We experimentally demonstrate the existence and the control of cavity
solitons in externally driven vertical-cavity semiconductor lasers
above threshold. A model including material polarization dynamics
is used to predict and confirm the experimental findings. |
WA3 -9:15 a.m.
Towards
a Cavity Soliton Laser: Localized Emission States in Vertical-Cavity
Surface-Emitting Lasers with Frequency-Selective Feedback
Thorsten Ackemann et al.
We report on experimental investigations of selfsustained bistable
localized emission states in vertical-cavity surface-emitting lasers
with frequency-selective feedback without purely electrical pumping.
Some insight is obtained already by a plane-wave theoretical model. |
WA4 - 9:30 a.m.
Beam
Propagation in a Cold Rb Atomic Sample
Guillaume Labeyrie et al.
Reshaping of a probe laser beam crossing a cold Rb sample is measured
as a function of power, detuning and beam waist position. Three different,
independent, and controllable sources of nonlinear interaction are
identified. |
|
WD - Poster Session I, Wednesday, 7 September 2005, 4:00
p.m.–6:00 p.m. |
WD8
Transverse Response
of Cavity Systems
Andrew J. Scroggie et al.
We show that plane-mirror optical cavities (linear and nonlinear)
can convert spatially-phase (amplitude) modulated input beams into
amplitude (phase)
modulated outputs. The effect occurs for only one sign of the effective
cavity detuning. |
WD11
High Density InAlAs/GaAlAs Quantum
Dots as an Efficient Enhanced Kerr Material for Transverse Non-linear
Optics in Microcavities
Jean-Michel Benoit et al.
InAlAs/GaAlAs quantum dots are studied using transmission electron
microscopy, photoluminescence. These systems appear as promising materials
for laser and non-linear optics in the visible/near infrared range,
particularly as a focusing Kerr-like medium for pattern formation. |
WD14
Optical Pattern and Cavity Solitons
in a Microcavity Based on Semiconductor Quantum Dots: Microscopic
Model
Sylvain Barbay et al.
We develop an optical spatio-temporal model for quantum dots. Auger
interactions are included as well as the inhomogeneous distribution
of quantum dot sizes. Both focusing and defocusing nonlinear regimes
are highlighted for cavity soliton applications. |
|
ThB - Poster Session II, Thursday, 8 September 2005, 10:00
a.m.–12:00 p.m |
ThB26
Cavity Solitons
in a VCSEL with Saturable Absorber
Giovanna Tissoni et al.
We predict the existence and control of cavity solitons in a VCSEL
with saturable absorber. The absence of a holding beam implies that
the background is the zero intensity field, originating a Cavity Soliton
Laser. |
ThB27
Cavity Solitons and Patterns
in an Optically Pumped Semiconductor Amplifier with Coherent Injection
Sylvain Barbay et al.
We show the spontaneous formation of cavity solitons in a 120 microns
diameter, specially designed and very uniform optically pumped semiconductor
microcavity as well as patterns with local hexagonal symmetry. |
ThB28
Transverse Solitons on a Dynamical
Spiral Background
Florian Huneus et al.
We investigate the properties and the region of existence of high-amplitude
dissipative solitons on a low-amplitude dynamical spiral background.
The experimental system is a single-mirror scheme with sodium vapor
as the nonlinear medium. |
ThB30
Polarization Properties and
Length Scales of Patterns in Vertical-Cavity Surface-Emitting Lasers
Malte Schulz-Ruhtenberg et al.
We report on experimental investigations of the emission of vertical-cavity
surface-emitting lasers with a large square aperture. Spatial-resolved
polarization and length scales of transverse patterns are examined.
|
ThD - Nonlinear Spatial Structures, Thursday, 8 September
2005, 4:30 p.m.–6:30 p.m. |
ThD6 - 5:45 p.m.
Reversible
Motion of Cavity Solitons on Modulated Backgrounds
Andrew J. Scroggie et al.
Cavity solitons can move up or down phase gradients, or even remain
motionless regardless of background modulations. Abrupt changes in
their direction of motion and final destination occur on increasing
the background modulation wavenumber. |
|
FA - Fabrication and Uses of Nonlinear Spatial Structures,
Friday, 9 September 2005, 8:30 a.m.–10:00 a.m. |
FA3 - 9:00 a.m.
Observation
of a Discrete Family of Dissipative Solitons in the Presence of a
Symmetry-Breaking Bifurcation
Matthias Pesch et al.
The experimental observation of a discrete family of vector dissipative
solitons in
a single-mirror scheme based on sodium vapor is reported. Simulations
provide further insight into the mechanisms leading to soliton formation. |
|
FB - Solitons and New Nonlinear Structures, Friday, 9 September
2005, 10:30 a.m.–12:30 p.m |
FB7 - 12:00 p.m.
Bifurcation
Structure and Asymmetric Sequences of Cavity Solitons
Damia Gomila et al.
We study the bifurcation structure of soliton clusters in models of
nonlinear optical cavities. We demonstrate a much higher level of
complexity than previously reported, and discuss the properties of
asymmetric clusters of solitons. |
FB8 - 12:15 p.m.
Excitability Mediated
by Localized Structures
Gomila Damia et al.
We characterize a scenario where localized structures in nonlinear
optical cavities
display an oscilatory behavior which becomes unstable leading to an
excitable regime. Excitability emerges from spatial dependence since
the system locally is not excitable. |
