Laser Diode Self-Mixing Interference Based on Phase Measurement Method

Ming Wang; Dong Mei Guo

doi:10.4028/www.scientific.net/KEM.381-382.247

Paper Titles

Study on the Key Technology of Airport Runway Frictional Coefficient Measurement
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Simultaneous Flatness and Surface Roughness Measurement of a Plastic Sheet Using a Fan-Shaped Laser Beam Scanning System
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A Surface Texture Information System Integrated with AutoCAD for Next Generation GPS
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A Study on Surface Material Measures for Areal Surface Texture Measuring Instruments: Measuring Conditions for the Areal Profiling
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Laser Diode Self-Mixing Interference Based on Phase Measurement Method
p.247

A Novel Laser Feedback Interferometer for Metrology of Large Range Displacement
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Eliminate of the Nonlinearity in Heterodyne Interferometer
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Characterizing the Thermal Properties of Solid Materials with Weakly Absorption by the Transient Thermal Grating Method
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Aspheric Surface Testing Using a Partial Compensation Lens
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HomeKey Engineering MaterialsKey Engineering Materials Vols. 381-382Laser Diode Self-Mixing Interference Based on...

Laser Diode Self-Mixing Interference Based on Phase Measurement Method

Abstract:

In order to improve the displacement measurement accuracy of the laser diode self-mixing interference (SMI), phase measurement method is introduced in the SMI signal analysis. In this paper, three modulation technique have been proposed: injection current modulation, external cavity length modulation and sinusoidal phase modulation. Measurement principle of the three modulation techinque are briefly explained. Design of the experimental system, measurement results of micro-displacement will be reported.