scholarly journals Universal characterization of cavity–magnon polariton coupling strength verified in modifiable microwave cavity

2020 ◽  
Vol 128 (7) ◽  
pp. 073904
Author(s):  
Jeremy Bourhill ◽  
Vincent Castel ◽  
Alexandre Manchec ◽  
Gwendal Cochet
Keyword(s):  
Coupling Strength ◽  
Microwave Cavity

Microwave Dielectric Loss Characterization of Silicon Carbide Wafers

2006 ◽  
Vol 527-529 ◽  
pp. 733-736
Author(s):  
Timothy Bogart ◽  
W.J. Everson ◽  
Rick D. Gamble ◽  
Ed Oslosky ◽  
David Snyder ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Dielectric Loss ◽  
Microwave Cavity ◽  
High Yield ◽  
Microwave Dielectric ◽  
Mapping System ◽  
High Frequency Devices ◽  
Nondestructive Characterization ◽  
Initial Results

Semi-insulating silicon carbide (SiC) wafers are important as substrates for high frequency devices such as AlGaN-GaN HEMT’s. A nondestructive characterization technique has been developed to measure the dielectric properties of SiC wafers in the GHz frequency range where the devices will operate in order to validate wafers for high yield working devices. The dielectric loss is measured at approximately 16 GHz in a split microwave cavity. Initial results show a correlation where the dielectric loss decreases as the resistivity increases, where the resistivity was measured using a Contactless Resistivity Mapping system (COREMA). The uniformity of dielectric loss across SiC wafers was evaluated using a split post dielectric resonator cavity fixed at 5.5GHz to measure the dielectric loss at five points on a wafer. Dielectric loss as a function of temperature from room temperature to 400°C was also studied.

scholarly journals Rapid, non-invasive characterization of the dispersity of emulsions via microwaves

2018 ◽  
Vol 9 (34) ◽  
pp. 6975-6980 ◽  
Author(s):  
Yuqiang Yan ◽  
Sergio Gonzalez-Cortes ◽  
Benzhen Yao ◽  
Daniel R. Slocombe ◽  
Adrian Porch ◽  
...  
Keyword(s):  
Perturbation Technique ◽  
New Method ◽  
Microwave Cavity ◽  
Non Invasive ◽  
Cavity Perturbation ◽  
Microwave Cavity Perturbation

Here we report an entirely new method for the non-intrusive interrogation and characterisation of emulsions based on the microwave cavity perturbation technique.

scholarly journals Design and characterization of a resonant microwave cavity as a diagnostic for ultracold plasmas

2021 ◽  
Vol 92 (1) ◽  
pp. 013506
Author(s):  
M. A. W. van Ninhuijs ◽  
K. A. Daamen ◽  
J. Beckers ◽  
O. J. Luiten
Keyword(s):  
Microwave Cavity ◽  
Ultracold Plasmas

scholarly journals Connecting Fano interference and the Jaynes-Cummings model in cavity magnonics

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Jakob Gollwitzer ◽  
Lars Bocklage ◽  
Ralf Röhlsberger ◽  
Guido Meier
Keyword(s):  
Cross Section ◽  
Coupling Strength ◽  
Room Temperature ◽  
Optical Model ◽  
Microwave Cavity ◽  
Additional Contribution ◽  
Fano Interference ◽  
Quantum Optical ◽  
Interference Picture ◽  
Photon Coupling

AbstractWe show that Fano interference can be realized in a macroscopic microwave cavity coupled to a spin ensemble at room temperature. Via a formalism developed from the linearized Jaynes-Cummings model of cavity electromagnonics, we show that generalized Fano interference emerges from the photon–magnon interaction at low cooperativity. In this regime, the reflectivity approximates the scattering cross-section derived from the Fano-Anderson model. Although asymmetric lineshapes in this system are often associated with the Fano formalism, we show that whilst Fano interference is actually present, an exact Fano form cannot be achieved from the linear Jaynes-Cummings model. In the Fano model an additional contribution arises, which is attributed to decoherence in other systems, and in this case is due to the resonant nature of the photonic mode. The formalism is experimentally verified and accounts for the asymmetric lineshapes arising from the interaction between magnon and photon channels. As the magnon–photon coupling strength is increased, these channels merge into hybridized magnon–photon modes and the generalized Fano interference picture breaks down. Our results are universally applicable to systems underlying the linearized Jaynes-Cummings Hamiltonian at low cooperativity and connect the microscopic parameters of the quantum optical model to generalized Fano lineshapes.

Characterization of free falling drops inside a microwave cavity

2012 ◽  
Author(s):  
M. Cabanes-Sempere ◽  
C. Cozzo ◽  
J.M. Catala-Civera ◽  
F.L. Penaranda-Foix ◽  
K. Ishizaki ◽  
...  
Keyword(s):  
Microwave Cavity ◽  
Free Falling

A Diagnosis Testbench of Analog IP Cores for Characterization of Substrate Coupling Strength

2011 ◽  
Vol E94-C (6) ◽  
pp. 1016-1023
Author(s):  
Takushi HASHIDA ◽  
Yuuki ARAGA ◽  
Makoto NAGATA
Keyword(s):  
Coupling Strength ◽  
Substrate Coupling ◽  
Ip Cores
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