scholarly journals Simulation with Python on transverse modes of the symmetric confocal resonator

2017 ◽  
Author(s):  
Yang Song ◽  
Zhenhua Li ◽  
Qinghua Wang ◽  
Jing Qi ◽  
Yunjing Ji
Keyword(s):  
Transverse Modes ◽  
Confocal Resonator

scholarly journals Supernova constraints on an axion-photon-dark photon interaction

2021 ◽  
Vol 2021 (6) ◽  
Author(s):  
Anson Hook ◽  
Gustavo Marques-Tavares ◽  
Clayton Ristow
Keyword(s):  
Longitudinal Mode ◽  
Transverse Mode ◽  
The Other ◽  
Unusual Feature ◽  
Dark Sector ◽  
Longitudinal Modes ◽  
Dark Photon ◽  
Transverse Modes ◽  
Weakly Coupled ◽  
Photon Coupling

Abstract We present the supernova constraints on an axion-photon-dark photon coupling, which can be the leading coupling to dark sector models and can also lead to dramatic changes to axion cosmology. We show that the supernova bound on this coupling has two unusual features. One occurs because the scattering that leads to the trapping regime converts axions and dark photons into each other. Thus, if one of the two new particles is sufficiently massive, both production and scattering become suppressed and the bounds from bulk emission and trapped (area) emission both weaken exponentially and do not intersection The other unusual feature occurs because for light dark photons, longitudinal modes couple more weakly than transverse modes do. Since the longitudinal mode is more weakly coupled, it can still cause excessive cooling even if the transverse mode is trapped. Thus, the supernova constraints for massive dark photons look like two independent supernova bounds super-imposed on top of each other.

scholarly journals Fourier-optical selection of higher order transverse modes in broad area lasers

1999 ◽  
Vol 5 (3) ◽  
pp. 32 ◽  
Author(s):  
S. Wolff ◽  
D. Messerschmidt ◽  
H. Fouckhardt
Keyword(s):  
Higher Order ◽  
Broad Area ◽  
Transverse Modes ◽  
Broad Area Lasers ◽  
Selection Of

Ion modes in strongly coupled two-component plasmas

1993 ◽  
Vol 50 (3) ◽  
pp. 359-367 ◽  
Author(s):  
M. A. Berkovsky
Keyword(s):  
Computer Simulation ◽  
Hydrodynamic Model ◽  
Simulation Data ◽  
Frequency Spectra ◽  
Strongly Coupled ◽  
Transverse Modes ◽  
Two Component ◽  
Computer Simulation Data

A generalized hydrodynamic model is used to evaluate the frequency spectra of longitudinal and transverse modes in dense strongly coupled two-component plasmas. The results are compared with available computer simulation data.

Wideband double-mode bulk acoustic wave resonator filters on lithium niobate using periodically slotted electrodes

2021 ◽  
Author(s):  
Ting Wu ◽  
Yu-Po Wong ◽  
Yiwen He ◽  
Jing-Fu Bao ◽  
Ken-ya Hashimoto
Keyword(s):  
Lithium Niobate ◽  
Frequency Separation ◽  
Bulk Acoustic Wave ◽  
3D Analysis ◽  
Transverse Modes ◽  
Resonance Modes ◽  
Bulk Acoustic Wave Resonator ◽  
Wave Resonator ◽  
Piston Mode ◽  
Resonator Filters

Abstract Abstract: This paper discusses applicability of periodically slotted electrodes for realization of wideband transversely-coupled double-mode resonator filters using lithium niobate (LN) thin plate. First, two-dimensional analysis is carried out, and it is shown that the periodic structure is effective to control the frequency separation between two resonance modes, and synthesis of the fractional bandwidth larger than 24% is achievable. Next, 3D analysis is performed for suppression of spurious resonances. It is shown that the mass loading at aperture edges is effective for the piston mode operation, and transverse modes can be well suppressed. It is also pointed out that the bottom electrode should be covered only the aperture region and removed from the busbar and gap regions for suppression of unwanted resonances. With these proper edge treatments, spurious-free and wide passband can be synthesized.

Transverse modes of gain‐guided coupled‐stripe lasers: External cavity control of the emitter spacing

1985 ◽  
Vol 47 (1) ◽  
pp. 7-9 ◽  
Author(s):  
J. E. Epler ◽  
N. Holonyak ◽  
R. D. Burnham ◽  
T. L. Paoli ◽  
R. L. Thornton ◽  
...  
Keyword(s):  
External Cavity ◽  
Transverse Modes
Sign in / Sign up

Export Citation Format

Share Document