A Method of Determining a Laser-Velocimeter Focal Point and Measuring its Beam Properties Using a Hot-wire Anemometer

Material type: 文書・図像類

Author: 高木, 正平ほか

Publisher: 航空宇宙技術研究所

Publication date: 1989-11

Material Format: Digital

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Note (General)：: A simple method was developed to determine the focal point of the Laser 2 Focus velocimeter. The method requires only a conventional hot-wire anemomet...

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Material Type: 文書・図像類
Title: A Method of Determining a Laser-Velocimeter Focal Point and Measuring its Beam Properties Using a Hot-wire Anemometer
Author/Editor: 高木, 正平
室田, 勝一
TAKAGI, Shohei
MUROTA, Katsuichi
Author Heading: 高木, 正平
室田, 勝一
TAKAGI, Shohei
MUROTA, Katsuichi
Publication, Distribution, etc.: 航空宇宙技術研究所
Publication Date: 1989-11
Publication Date (W3CDTF): 1989-11
Alternative Title: 熱線を用いたレーザ流速計のビーム焦点検出及びビーム特性計測法
Periodical title: 航空宇宙技術研究所報告 = Technical Report of National Aerospace Laboratory TR-1043
No. or year of volume/issue: 1043
Volume: 1043
Pages: 10-
ISSN (Periodical Title): ISSN : 0389-4010
Text Language Code: eng
Target Audience: 一般
Note (General): A simple method was developed to determine the focal point of the Laser 2 Focus velocimeter. The method requires only a conventional hot-wire anemometer, which is traversed across the dual beams at diverse beam-axis locations. The squared hot-wire bridge output indicates the mean value of the beam intensity exposed on the hot-wire element. Eventually, the maximal bridge output along the beam axis is referred to as the focal point. Furthermore, the method can be extended to measure laser-beam properties such as beam separation, beam diameter, relative beam intensity on the dual beams, beam divergence and cross-sectional beam-intensity distribution. Measurement error in determining the beam diameter is estimated by using a simple beam model.
資料番号: NALTR1043000
レポート番号: NAL TR-1043
Access Restrictions: 限定公開
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 宇宙航空研究開発機構 : 宇宙航空研究開発機構リポジトリ