Noninvasive and Portable Diagnoses for Brain and Heart Disorder: Angle-Distinguishable Infrared Spectroscopy Based Upon a Three Dimensional Resonant Toroid Version of Whispering Gallery Modes

2018 ◽  
Author(s):  
O'Dae Kwon
Keyword(s):  
Infrared Spectroscopy ◽  
Three Dimensional ◽  
Heart Disorder ◽  
Whispering Gallery Modes ◽  
Whispering Gallery

Ultra-thin curved visible microdisk lasers with three-dimensional whispering gallery modes

Nanophotonics ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 2997-3002
Author(s):  
Taojie Zhou ◽  
Kar Wei Ng ◽  
Xiankai Sun ◽  
Zhaoyu Zhang
Keyword(s):  
Integrated Circuits ◽  
Quantum Wells ◽  
Strain Relaxation ◽  
Three Dimensional ◽  
Single Mode ◽  
Whispering Gallery Modes ◽  
Spatial Profile ◽  
Spatial Intensity Distribution ◽  
Whispering Gallery ◽  
Microdisk Lasers

AbstractMicrodisk lasers are important components in photonic integrated circuits (PICs), of which the whispering gallery modes (WGMs) are usually confined within a two-dimensional (2D) planar slab. Here, owing to the strain relaxation of quantum wells by wet-etching method, we present ultra-thin curved visible microdisk lasers with single-mode lasing emission and a high quality factor of ∼17,000, which enable a 3D spatial intensity distribution of WGMs and provide an extra degree of freedom for the confined photons compared with the conventional 2D in-plane WGMs. The curved microdisk lasers with a 3D spatial profile of WGMs may provide attractive applications in flexible and multilevel photon sources for the PICs.

Three-dimensional whispering gallery modes in InGaAs nanoneedle lasers on silicon

2014 ◽  
Vol 105 (11) ◽  
pp. 111105 ◽  
Author(s):  
T.-T. D. Tran ◽  
R. Chen ◽  
K. W. Ng ◽  
W. S. Ko ◽  
F. Lu ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Whispering Gallery Modes ◽  
Whispering Gallery

scholarly journals CHAOS IN CYLINDRICAL STADIUM BILLIARDS VIA A GENERIC NONLINEAR MECHANISM

2012 ◽  
Vol 22 (09) ◽  
pp. 1250206
Author(s):  
THOMAS GILBERT ◽  
DAVID P. SANDERS
Keyword(s):  
Phase Space ◽  
Nonlinear Oscillations ◽  
Three Dimensional ◽  
Whispering Gallery Modes ◽  
Whispering Gallery ◽  
Higher Dimensional ◽  
Residual Part ◽  
Nonlinear Mechanism ◽  
Stable Periodic ◽  
Bounded Convex

We describe conditions under which higher-dimensional billiard models in bounded, convex regions are fully chaotic, generalizing the Bunimovich stadium to dimensions above two. An example is a three-dimensional stadium bounded by a cylinder and several planes; the combination of these elements may give rise to defocusing, allowing large chaotic regions in phase space. By studying families of marginally-stable periodic orbits that populate the residual part of phase space, we identify conditions under which a nonlinear instability mechanism arises in their vicinity. For particular geometries, this mechanism rather induces stable nonlinear oscillations, including in the form of whispering-gallery modes.

Cavities for Intersubband Transitions

1996 ◽  
Vol 450 ◽  
Author(s):  
V. Berger ◽  
J-Y Duboz ◽  
E. Ducloux ◽  
F. Lafon ◽  
I. Pavel ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Maxwell Equations ◽  
Selection Rule ◽  
Three Dimensional ◽  
Whispering Gallery Modes ◽  
Dimensional System ◽  
Intersubband Transitions ◽  
Whispering Gallery ◽  
Vertical Cavity ◽  
Three Dimensional System

ABSTRACTThe different possible geometries for intersubband transitions in microcavities are discussed. A consequence of the selection rule governing intersubband transition is the vanishing interaction with the electromagnetic field inside a usual vertical cavity. The geometry of vertical planar cavities which has been used extensively with interband transitions is therefore useless in the case of intersubband transitions. Different solutions are reviewed to overcome this problem. The breakdown of the selection rule in a vertical cavity is first discussed. This can be done with the use of vertical quantum wells, or thanks to intracavity diffraction gratings. Second, the use of in plane cavities is discussed. Two solutions are here envisaged: Whispering gallery modes in microdisk cavities, and efficient etched air/GaAs Bragg mirrors. Concerning the latter attractive solution, the losses by diffraction into the substrate are evaluated theoretically and experimentally. The solution of the Maxwell equations by a finite element method in this three dimensional system shows the great importance of diffraction. These results are confirmed by waveguided Fourier transform spectroscopy. To overcome this difficulty, we propose the use of lower refractive index substrates, such as oxidized AlAs.

High-Q whispering gallery modes in pillar microcavities

2007 ◽  
Vol 32 (2-3) ◽  
pp. 123-126
Author(s):  
Y.-R. Nowicki-Bringuier ◽  
J. Claudon ◽  
C. Böckler ◽  
S. Reitzenstein ◽  
M. Kamp ◽  
...  
Keyword(s):  
Whispering Gallery Modes ◽  
High Q ◽  
Whispering Gallery

Size-dependent whispering gallery modes in Au-coated ZnO microrods

2021 ◽  
Author(s):  
F. Bellarmine ◽  
Senthil Kumar Eswaran ◽  
Ramanjaneyulu Mannam ◽  
M. S. Ramachandra Rao
Keyword(s):  
Whispering Gallery Modes ◽  
Whispering Gallery ◽  
Size Dependent

On the Abramov approach for the approximation of whispering gallery modes in prolate spheroids

2020 ◽  
pp. 125599
Author(s):  
Pierluigi Amodio ◽  
Anton Arnold ◽  
Tatiana Levitina ◽  
Giuseppina Settanni ◽  
Ewa B. Weinmüller
Keyword(s):  
Whispering Gallery Modes ◽  
Whispering Gallery ◽  
Prolate Spheroids

All-optical tunable whispering gallery modes in a polymer bottle micro-resonator

2020 ◽  
pp. 1-1
Author(s):  
Hongxia Wang ◽  
Miaomiao Liao ◽  
Huifu Xiao ◽  
Zhenfu Zhang ◽  
Junbo Yang ◽  
...  
Keyword(s):  
Whispering Gallery Modes ◽  
Whispering Gallery ◽  
All Optical ◽  
Micro Resonator
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