A Novel Faint Signal Processing Method for Sensitivity Improvement of Pump/Probe-Based LG/LD SAW Spectroscopy System

Abstract:

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A novel faint signal processing method based on phase-lock amplification principle is developed to enhance the sensitivity of pump/probe-based laser generated and laser detected surface acoustic waves (LG/LD SAW) spectroscopy system. This novel method involves a “dead zone” filter located before a common phase-lock amplification unit, which wipes off most of the noise stacked on SAW signal. This paper explored the working principle of this novel signal processing method based on the knowledge of the characteristics of the system noise and the signal. The experiment result shows that the detection system’s sensitivity has been dramatically improved by this new signal processing method.

Info:

Periodical:

Advanced Materials Research (Volumes 301-303)

Edited by:

Riza Esa and Yanwen Wu

Pages:

188-194

DOI:

10.4028/www.scientific.net/AMR.301-303.188

Citation:

M. S. Bai et al., "A Novel Faint Signal Processing Method for Sensitivity Improvement of Pump/Probe-Based LG/LD SAW Spectroscopy System", Advanced Materials Research, Vols. 301-303, pp. 188-194, 2011

Online since:

July 2011

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Price:

$35.00

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