- June 4, 2020
-
APS Virtual DAMOP Meeting 2020
- January 23, 2007
-
LASE 2007, Photonics West, San Jose, CA
- May 22, 2005
- CLEO
(Presenter: D. Foster)
- May 16-21, 2004
- CLEO
(Presenter: K. Hasegawa)
- May 21 & 22, 2004.
-
APS Northwest Section Meeting(Presenter: D.
Foster)
- January 27-29, 2004
-
LASE 2004, Photonics West, San Jose, CA
- October 6-9, 2003
-
Frontiers in Optics, Laser Science XIX, Tucson,
AZ
- May 30-31, 2003
- APS
Northwest Section Meeting, Portland, OR
- November 9, 2001
- Mie Seminar "Light Scattering Theory and
its Applications", Bochum (Germany)
- April 3-7, 2001
- 10th European Conference on Integrated
Optics, Paderborn, Germany
- September 10 - 17, 2000
-
CLEO Europe (main author: Franco Laeri)
- July 17 - 29, 2000
-
WEH Summer School "Mesoscopic Physics - between photonic
and electronic systems" (co-organizer)
- June 13-17, 2000
- Nobel Symposium "Quantum Chaos Y2K",
Bäckaskogs Castle, Sweden
- April 4, 2000
- Spring
Convention of the German Physical Society, Ulm (Optical
Engineering poster session)
- March 20-22, 2000
-
March Meeting of the American Physical Society,
- January 27-28, 2000
-
Photonics West, San Jose, CA: invited talks held by
- R.K.Chang (01/27)
- A.D.Stone (01/28)
- October 3, 1999
-
EURESCO Conference "Quantum Optics X", Mallorca, Spain
(poster presented by M.Hentschel)
- September 23-24, 1999
- Royal Netherlands Academy of Arts and
Sciences, Colloquium "Quantum Optics of Small Structures"
(invited poster)
- September 10, 1999
- Plenary meeting of the NanOp Center of
Excellence in Nanoscale Optoelectronics, Berlin
- June 28 - July 1, 1999
- 5th Experimental Chaos Conference,
Orlando, Florida (proceedings)
- June 10, 1999
- General Convention of the Max-Planck
Society, Dortmund (Computer presentation)
- March 24, 1999
- Centennial Meeting of the APS (
talk held by Seongsik Chang; additional talks see
above)
- September 25, 1998
- Billiards Meeting, Marburg (talk)
- July 23, 1998
- Meeting of the scientific advisory board
of the Max-Planck Institute, Dresden (talk)
- May 7, 1998
- CLEO-IQEC '98 Meeting of the Optical
Society of America, San Francisco, California
(proceedings)
- March 17, 1998
- "Recent trends in Modern Physics and
Chemistry", Dresden (symposium talk)
- March 16, 1998
- March Meeting of the American Physical
Society, Los Angeles, California (talks held by A.D.Stone
and F.Capasso)
- September 1997
- Forschungsforum Leipzig (poster)
- August 1997
- Aspen Center for Physics
- July-August 1997
- Workshop on Novel Physics in
Low-Dimensional Electron Systems, Dresden (poster and
proceedings)
- June 18, 1997
- Acoustical Society of America Meeting,
Penn State, Pennsilvania (talk held by
E.E.Narimanov)
- June 1997
- Symposium in honor of Martin Gutzwiller,
and German-Israeli Meeting of Young Researchers, Dresden
(poster and talk)
- March 21, 1997
- Spring
Convention of the German Physical Society,
Münster
- March 1996
-
March Meeting of the American Physical Society, Saint
Louis, MO
- May 1995
- CLEO QELS '95 Meeting of the Optical
Society of America, Baltimore, Maryland (talk and
proceedings)
- June - July 1994
- Summer School on Mesoscopic Quantum
Physics, NATO Advanced Study Institute, Les Houches,
France
- March 1994
March
Meeting of the American Physical Society, Pittsburg, PA
(talk and proceedings)
- September 1991
- Fall School on Dissipation and Quantum
Mechanics, Federal Institute of Physics and Technology,
Braunschweig
- Conductance quantization in the presence of
backscattering
with H.Heyszenau. Found simple realization of a quantum
constriction in a magnetic field displaying accurate
conductance plateaux despite the fact that none of its
transmission eigenvalues are unity.
- Resonances and continuum bound states in an open
quantum dot
with H.Heyszenau. Investigated the effect of a
magnetic-field induced nonintegrable perturbation on bound
states in the continuum which arise due to a classical
conservation law in a quantum dot with leads attached to
it; found resonance widths tunable by magnitude of magnetic
field.
- Linear response theory and the Landauer formula
with A.D.Stone and H.U.Baranger. Showed that contrary to
the claim of a recent Physical Review Letter by F.Sols,
linear response theory in open conductors is gauge
invariant without the need for a modified continuity
equation, and that the Landauer-Büttiker formula can
be obtained consistently from this starting point.
- Resonance lineshapes in quasi-one-dimensional
scattering
with A.D.Stone. Investigated the limitations of the
coupled-channel (Feshbach) scattering theory in
microstructures with two ideal leads, and applied S-matrix
theory to multilead, multichannel geometries to make
general predictions about the possible effects that
resonant states can have on the conductance of a
microstructure; proposed a transport experiment on a groove
in a two-dimensional electron gas with a magnetic field
parallel to it.
- Fano resonances in the linear conductance of a quantum
well in a tilted magnetic field
with A.D.Stone. Proposed a heterostructure experiment on a
shallow quantum well without barriers that exhibits narrow
asymmetric resonances due to inter-Landau-level transitions
whose width depends on the tilt angle of the applied
magnetic field.
- Ray Chaos in Asymmetric Resonant Cavities (ARC)
with A.D.Stone, R.K.Chang, A.Mekis, and G.Chen. Proposed a
ray-optics model to explain the Q-factors and anisotropic
emission patterns of dielectric cavities when they are
deformed from rotationally invariant shapes. Applied the
KAM theory of the transition to Hamiltonian chaos to
predict a threshold deformation for Q-spoiling as well as
power-law degradation of Q above this threshold. Found
experimental agreement with expected emission
directionality of deformed lasing droplets.
- "Wave Chaos" in Asymmetric Resonant Cavities
with A.D.Stone and G.Hackenbroich. Confirmed the existence
of a threshold deformation for Q-spoiling and the
classically predicted directionality patterns by numerical
solution of the wave equation for dielectric cylinders with
strongly deformed cross-section at small wavelengths.
Observed wave corrections to the ray predictions for
resonance lifetimes; identified them as manifestations of
"chaos-assisted tunneling" and "dynamical localization",
thus providing a novel type of system in which to study
these phenomena theoretically and experimentally.
- Quantum-cascade microcylinder lasers with oval
cross-section
With E.E. Narimanov, C.Gmachl, F. Capasso, A.D.Stone et
al.. Used methods from nonlinear dynamics to aid in
the design and interpetation of unipolar semiconductor
microlasers with overall dimensions below 100 μm and
world-record output power for their size.
- Effects of sample-size and resorvoir width on the AC
admittance of small conductors
with Klaus Richter. Starting from linear response theory,
rederived Büttiker's scattering formulation of
external and internal response in AC transport,
generalizing to include the interplay of inelastic
processes and finite reservoir width.
- Hexagonal zeolite-dye microcrystals as microlasers
with U. Vietze, F. Laeri et al. Calculated the
spectral and spatial properties of lasing modes in
self-assembled microcrystalline lasers with low pump
threshold and diameters below 8 μm, thus explaining
experimentally observed emission directionality, free
spectral range and Q-factors.
- Quantum well lasers using metallic-mirror
microresonators
with I. Abram et al. Identified a new dome-shaped
cavity design for which the scalar wave problem is
integrable, and derived some special exact solutions for
modes of the full vectorial electromagnetic problem as
well. Used chaotic phase-space analysis to investigate the
effect of shape distortions on the mode structure, in
particular regarding the leakage through a Bragg mirror
bounding the cavity from below.
- Design of passive optical resonator devices (WDM,
filters, switches, directional couplers)
at Nanovation Technologies, Inc. Investigated the coupling
problem between resonator devices and adjacent optical
components on Indium Phosphide based electro-optic
integrated circuits.
- Non-perturbative classical phase space structure in
nearly spherical optical microresonators
with Scott Lacey, Hailin Wang and David Foster. Performed
numerical simulations and theoretical analysis to explain
the experimentally observed strong directionality of light
output from fused-silica resonators that are only weakly
deformed from the limiting case of spherical symmetry where
no such directionality is to be expected.
-
Surface plasmon polariton propagation around bends at a metal - dielectric interface
with Keisuke Hasegawa and Miriam Deutsch. Numeircally and theoretically investigated
the interplay between radiative and absorptive losses as surface plasmon-polaritons
propagate along a bend connecting two straight segments. Found that an optimum radius of curvature exists for which the overall losses are minimized.
-
Combining the effects of boundary geometry and mirror material upon the fully vectorial optical modes of three-dimensional microcavities.
with David Foster and Andrew Cook. Developed new methods to exploit axial symmetry in electromagnetic mode computations for dome cavities bounded by metallic and/or dielectric multilayer structures. The latter can give rise to modes that do not exist in identically shaped cavities with pure ideal metal mirrors. In particular, the Goos-Hanchen effect was oserved in a novel way by detecting its spectral fingerprint.
-
Orbital angular momentum and the optical analgoue of spin-orbit coupling in dome cavities
with David Foster. Developed a degenerate perturbation theory to predict splittings in Gaussian-type beams when the paraxial approximation breaks down. Both orbital and spin (polarization) angular momentum must be accounted for when a Bragg stack imparts different reflection phases on s versus p polarizations.
Publications
The publication list is available
here.
- The page contains
links to full text of:
- Journal articles
- Book chapters
- Selected conference
proceedings
- Public-interest
articles
This page © Copyright Jens
Uwe Nöckel, 01/2005
Last modified: Thu Jun 18 09:46:06 PDT 2020
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