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

## Abstract

This work continues a series of papers where we propose an algorithm for the quasi-optical 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. Here, we present a corresponding code paraxial ray description and its test applications to single-mode beams in vacuum and also in inhomogeneous magnetized plasma. Here, the numerical results are compared with analytic formulas from Gaussian-beam optics and also with cold-plasma ray tracing, respectively. The quasi-optical simulations of mode-converting beams are reported in the third paper of this series.

- Authors:

- Nagoya Univ., Aichi (Japan)
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Nagoya Univ., Aichi (Japan); National Inst. for Fusion Science, Gifu (Japan)

- Publication Date:

- Research Org.:
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

- Sponsoring Org.:
- USDOE

- Contributing Org.:
- This work was supported by the U.S. DOE through Contract No. DE-AC02-09CH11466. This work was also supported by JSPS KAKENHI Grant No. JP17H03514.

- OSTI Identifier:
- 1557566

- Alternate Identifier(s):
- OSTI ID: 1544457

- Grant/Contract Number:
- AC02-09CH11466

- Resource Type:
- Accepted Manuscript

- Journal Name:
- Physics of Plasmas

- Additional Journal Information:
- Journal Volume: 26; Journal Issue: 7; Journal ID: ISSN 1070-664X

- Publisher:
- American Institute of Physics (AIP)

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY

### Citation Formats

```
Yanagihara, K., Dodin, I. Y., and Kubo, S. Quasioptical modeling of wave beams with and without mode conversion. II. Numerical simulations of single-mode beams. United States: N. p., 2019.
Web. doi:10.1063/1.5095173.
```

```
Yanagihara, K., Dodin, I. Y., & Kubo, S. Quasioptical modeling of wave beams with and without mode conversion. II. Numerical simulations of single-mode beams. United States. doi:10.1063/1.5095173.
```

```
Yanagihara, K., Dodin, I. Y., and Kubo, S. Tue .
"Quasioptical modeling of wave beams with and without mode conversion. II. Numerical simulations of single-mode beams". United States. doi:10.1063/1.5095173.
```

```
@article{osti_1557566,
```

title = {Quasioptical modeling of wave beams with and without mode conversion. II. Numerical simulations of single-mode beams},

author = {Yanagihara, K. and Dodin, I. Y. and Kubo, S.},

abstractNote = {This work continues a series of papers where we propose an algorithm for the quasi-optical 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. Here, we present a corresponding code paraxial ray description and its test applications to single-mode beams in vacuum and also in inhomogeneous magnetized plasma. Here, the numerical results are compared with analytic formulas from Gaussian-beam optics and also with cold-plasma ray tracing, respectively. The quasi-optical simulations of mode-converting beams are reported in the third paper of this series.},

doi = {10.1063/1.5095173},

journal = {Physics of Plasmas},

number = 7,

volume = 26,

place = {United States},

year = {2019},

month = {7}

}

*Citation information provided by*

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Web of Science

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