Optical wavefront distortion due to supersonic flow fields |
| |
Authors: | ZhiQiang Chen Song Fu |
| |
Institution: | (1) School of Aerospace, Tsinghua University, Beijing, 100084, China |
| |
Abstract: | The optical wavefront distortion caused by a supersonic flow field around a half model of blunt nose cone was studied in a
wind tunnel. A Shack-Hartmann wavefront sensor was used to measure the distorted optical wavefront. Interesting optical parameters
including the peak variation (PV), root of mean square (RMS) and Strehl ratio were obtained under different test conditions
during the experiment. During the establishing process of the flow field in the wind tunnel test section, the wavefront shape
was unstable. However after the flow field reached the steady flow state, the wavefront shape kept stable, and the relative
error of wavefront aberration was found small. The Shack-Hartmann wavefront sensor developed was proved to be credible in
measuring quantitatively the optical phase change of light traveling through the flow field around model window. |
| |
Keywords: | wavefront distortion optical measurement wind tunnel flow field Shack-Hartman wavefront sensor |
本文献已被 CNKI SpringerLink 等数据库收录! |
| 点击此处可从《中国科学通报(英文版)》浏览原始摘要信息 |
| 点击此处可从《中国科学通报(英文版)》下载免费的PDF全文 |