Air-dispersion measurement by second-harmonic heterodyne interferometry

被引：3
|
作者：
Salvadé, Y [1 ]
Dändliker, R [1 ]
Courteville, A [1 ]
Zickar, M [1 ]
机构：
[1] Univ Neuchatel, Inst Microtechnol, CH-2000 Neuchatel, Switzerland
来源：
OPTICS LETTERS | 2002年 / 27卷 / 16期
关键词：
D O I：
10.1364/OL.27.001424
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Interferometers with long optical paths in air usually require knowledge and control. of air dispersion. In addition, the measurements at several wavelengths and the dispersion properties of air allow errors caused by air turbulence to be compensated for. An innovative technique for air-dispersion measurement is described for long-baseline ground-based stellar interferometers. The technique combines second-harmonic interferometry and heterodyne detection to permit high-resolution measurement even for low optical powers. Experimental results show measurements of air dispersion in good agreement with the values predicted from the Edlen equation. (C) 2002 Optical Society of America.
引用
收藏
页码：1424 / 1426
页数：3
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