CHARACTERISTICS OF SYNTHESIZED LIGHT-SOURCES FOR WHITE-LIGHT INTERFEROMETRIC SYSTEMS

被引：8
|
作者：
WANG, DN
NING, YN
GRATTAN, KTV
PALMER, AW
WEIR, K
机构：
[1] Department of Electrical, Electronic and Information Engineering, City University, London
来源：
OPTICS LETTERS | 1993年 / 18卷 / 22期
关键词：
D O I：
10.1364/OL.18.001884
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Results of a study on the use of synthesized light sources in white-light interferometry are presented. The optimum wavelength combination with a pair of multimode laser diodes used to generate a synthetic wavelength source was simulated theoretically and verified experimentally. Using the best wavelength combination, we found that the lowest signal-to-noise ratio required by the system was 18.1 dB in theory and 22.1 dB from experiment. The relationships between the wavelengths of the two diodes used, their coherence lengths, and the signal-to-noise ratio required by the system are shown and discussed.
引用
收藏
页码：1884 / 1886
页数：3
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