High precision digital optical monitor
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1.
College of Electronic Information, Sichuan University, Chengdu 610064, China;
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2.
Southwest Institute of Technical Physics, Chengdu 610041, China
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Corresponding author:
MA Zi, lzmiameisong@yahoo.com
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Received Date:
2005-04-04
Accepted Date:
2005-04-15
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Abstract
After analyzing the noise in light path,circuit and signal process in the system of optical monitor,the frequency-stabilized chopper,low noise receiving circuit and digital lock-in amplifier with excellent performance of noise restraint are designed.Thereby the precision and stability of the system is improved greatly.Applying the system in optical coating system,the optical monitor shows high precision and stability.
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