# Quasioptical modeling of wave beams with and without mode conversion. III. Numerical simulations of mode-converting beams

@article{Yanagihara2019QuasiopticalMO, title={Quasioptical modeling of wave beams with and without mode conversion. III. Numerical simulations of mode-converting beams}, author={K. Yanagihara and I. Y. Dodin and Shin Kubo}, journal={Physics of Plasmas}, year={2019} }

This work continues a series of papers where we propose an algorithm for quasioptical modeling of electromagnetic beams with and without mode conversion. The general theory was reported in the first paper of this series, where a parabolic partial differential equation was derived for the field envelope that may contain one or multiple modes with close group velocities. In the second paper, we presented a corresponding code PARADE (PAraxial RAy DEscription) and its test applications to single…

## 14 Citations

### Quasioptical modeling of wave beams with and without mode conversion. II. Numerical simulations of single-mode beams

- PhysicsPhysics of Plasmas
- 2019

This work continues a series of papers where we propose an algorithm for quasioptical modeling of electromagnetic beams with and without mode conversion. The general theory was reported in the first…

### Quasioptical modeling of wave beams with and without mode conversion. I. Basic theory

- PhysicsPhysics of Plasmas
- 2019

This work opens a series of papers where we develop a general quasioptical theory for mode-converting electromagnetic beams in plasma and implement it in a numerical algorithm. Here, the basic theory…

### Quasioptical propagation and absorption of electron cyclotron waves: simulations and experiment

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- 2021

Electron-cyclotron resonance heating is an essential tool for manipulating fusion plasmas and has been diligently studied for decades through numerical simulations and experiments. Here, we report…

### Quasioptical modeling of wave beams with and without mode conversion. IV. Numerical simulations of waves in dissipative media

- PhysicsPhysics of Plasmas
- 2021

K. Yanagihara, I. Y. Dodin, 3 and S. Kubo Naka Fusion Institute, National Institutes for Quantum and Radiological Science and Technology, 311-0193, Naka, Ibaraki, Japan Princeton Plasma Physics…

### Mode Purity of Electron Cyclotron Waves after Their Passage through the Peripheral Plasma in the Large Helical Device

- PhysicsPlasma and Fusion Research
- 2019

Plasma heating and current drive with Electron Cyclotron Waves (ECWs) require precise control over the polarization state of ECWs to ensure that the entire input power is deposited where intended.…

### Metaplectic geometrical optics for modeling caustics in uniform and non-uniform media

- Geology
- 2020

As an approximate theory that is highly regarded for its computational efficiency, geometrical optics (GO) is widely used for modeling waves in various areas of physics. However, GO fails at…

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Numerical modeling of radio-frequency waves in plasma with sufﬁciently high spatial and temporal resolution remains challenging even with modern computers. However, such simulations can be sped up…

### Metaplectic geometrical optics for ray-based modeling of caustics: Theory and algorithms

- Computer SciencePhysics of Plasmas
- 2022

It is proved explicitly that MGO exactly reproduces standard GO when evaluated far from caustics (an important property that until now has only been inferred from numerical simulations), and MGO is related to other semiclassical caustic-removal schemes published in the literature.

### Restoring geometrical optics near caustics using sequenced metaplectic transforms

- PhysicsNew Journal of Physics
- 2020

Geometrical optics (GO) is often used to model wave propagation in weakly inhomogeneous media and quantum-particle motion in the semiclassical limit. However, GO predicts spurious singularities of…

### Gravitational spin Hall effect of light

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- 2020

The propagation of electromagnetic waves in vacuum is often described within the geometrical optics approximation, which predicts that wave rays follow null geodesics. However, this model is valid…

## References

SHOWING 1-10 OF 26 REFERENCES

### Quasioptical modeling of wave beams with and without mode conversion. II. Numerical simulations of single-mode beams

- PhysicsPhysics of Plasmas
- 2019

This work continues a series of papers where we propose an algorithm for quasioptical modeling of electromagnetic beams with and without mode conversion. The general theory was reported in the first…

### Quasioptical modeling of wave beams with and without mode conversion. I. Basic theory

- PhysicsPhysics of Plasmas
- 2019

This work opens a series of papers where we develop a general quasioptical theory for mode-converting electromagnetic beams in plasma and implement it in a numerical algorithm. Here, the basic theory…

### Quasi-optical description of wave beams in smoothly inhomogeneous anisotropic media

- Physics2009 11th International Conference on Transparent Optical Networks
- 2009

The quasi-optical description of wave beams is extended to smoothly inhomogeneous anisotropic and/or gyrotropic media. A method of deriving quasi-optical equations for a slow-varied scalar beam…

### Beam tracing in inhomogeneous anisotropic plasmas

- Physics
- 1998

An asymptotic method for solving the wave equation in the short-wavelength limit is presented. This method, called beam tracing, takes into account the wave properties, i.e., diffraction and…

### Extensions of the Ray Equations of Geometric Optics to Include Diffraction Effects

- Physics
- 1996

The paper discusses an extension of the ray equations of geometric optics to include diffraction effects for a wave beam propagating in a dispersive anisotropic medium. The diffraction effects are…

### Quasioptical treatment of electromagnetic Gaussian beams in inhomogeneous and anisotropic plasmas

- Physics
- 1993

The main effect of the Gaussian behavior of an electromagnetic beam consists in a waist formation in focal regions, where the ordinary geometric optics would collapse. The characteristic features of…

### A Quasi-Optical Beam-Tracing Code for Electron Cyclotron Absorption and Current Drive: GRAY

- Physics
- 2007

The theoretical framework of quasi-optical propagation power absorption and driven current of a Gaussian beam of electron cyclotron (EC) waves in a general tokamak equilibrium implemented in the code…

### ECRH power deposition from a quasi-optical point of view

- Physics
- 2008

A quasi-optical description of the propagation and damping of the slowly varying wave amplitude across an arbitrary electron cyclotron wave beam is presented. This model goes well beyond those…