Disturbance-free high-speed sinusoidal phase-modulating laser diode interferometer

被引：13

作者：

Suzuki, T ^{[1
]}

Maki, T ^{[1
]}

Zhao, X ^{[1
]}

Sasaki, O ^{[1
]}

机构：

[1] Niigata Univ, Fac Engn, Niigata 9502181, Japan

来源：

APPLIED OPTICS | 2002年 / 41卷 / 10期

关键词：

D O I：

10.1364/AO.41.001949

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A surface profiler that incorporates a feedback controller to eliminate external disturbances is proposed and demonstrated. Its overall performance is dependent on the frequency response of the feedback loop. The frequency of the modulating signal strongly influences the response of the feedback controller. When we used the integrating-bucket method, the CCD camera had to be operated at a low-frequency video rate. Our technique uses a CCD camera equipped with an electronic shutter. The shutter function enables us to apply high-speed sinusoidal phase modulation to the conventional integrating-bucket method under the standard video rate. (C) 2002 Optical Society of America.

引用

页码：1949 / 1953

页数：5

共 7 条

[1] Active phase-shifting interferometer using current modulation of a laser diode [J].