Influence of cavity length change on measurement of CW cavity ring-down
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1.
College of Optoelectric Science and Engineering, National University of Defence Technology, Changsha 410073, China
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Corresponding author:
LONG Xing-wu, Xwlong110@sina.com
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Received Date:
2006-06-29
Accepted Date:
2006-11-10
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Abstract
In order to clarify the impact of cavity length change on measurement,taking the laser's line-width into account,the influence of cavity length change on the measurement of cavity ring-down in two limiting cases was analyzed and simulated by using cavity ring-down and multiple-beam interferometry theory,hereby the general cases were discussed.Analyses showed the instability chiefly changed resonant frequency of ring-down cavity,then varied the emergent light power and the feature of ring-down signal,which shouled bring serious measurement error.All of these will provide theory direction to measurement error analysis and improve measurement accuracy.
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