WEKO3
アイテム
Laser transfer technique using wavefront correction and beam homogenizers in Thomson scattering diagnostics
https://repo.qst.go.jp/records/76501
https://repo.qst.go.jp/records/76501437ed19d-670c-4238-922b-38b168ae4a6e
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-04-22 | |||||
| タイトル | ||||||
| タイトル | Laser transfer technique using wavefront correction and beam homogenizers in Thomson scattering diagnostics | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
東條, 寛
× 東條, 寛× 笹尾, 一× 大山, 直幸× 椿本, 孝治× 吉田, 英次× Tojo, Hiroshi× Sasao, Hajime× Oyama, Naoyuki |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | This paper suggests the use of two optical elements for laser transfer in Thomson scattering diagnostics, which are widely used for other laser applications. YAG lasers amplified by flash lamps (repetition frequency of 50 Hz to 100 Hz having a few Joules output) can sometimes have adverse effects such as peaked beam profiles and wavefront distortion. We used a beam homogenizer, which is a refractive optical element, to change the beam profile from peaked to non-peaked at a designated position. Using a super- Gaussian output profile when amplifying lasers facilitated longer –by a factor of 1.5 (= 300 mm/200 mm) compared with top-hat beam profile – sustained distances, i.e. the distance along the laser path having a non-peaked profile. In terms of beam quality, wavefront distortion broke the beam profile in the far field. We used a deformable mirror to correct and flatten the wavefront of the beam. A YAG laser having a wavefront distortion of 0.46λ peak-to-valley was used to test the application of the deformable mirror, the results of which improved wavefront distortion to a wavelength of 0.1λ peak-to-valley. | |||||
| 書誌情報 |
Fusion Engineering and Design 巻 146, p. 1676-1680, 発行日 2019-04 |
|||||
| 出版者 | ||||||
| 出版者 | Elsevier | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0920-3796 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.fusengdes.2019.03.014 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://www.sciencedirect.com/science/article/pii/S0920379619303357 | |||||
