Interferometric Vibration Method for Testing Optical Pickup Head Actuators with Subsidiary Resonance

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Published 13 January 2004 Copyright (c) 2004 The Japan Society of Applied Physics
, , Citation Jong Sup Song et al 2004 Jpn. J. Appl. Phys. 43 405 DOI 10.1143/JJAP.43.405

1347-4065/43/1R/405

Abstract

We present a method for testing phase characteristics of optical pickup head actuators with subsidiary resonance. This subsidiary resonance detrimentally affects the servo performance of the actuators. The interferometric method employs a simple cube type beam splitter with one diffused surface and measures the vibration response function of the actuator.

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10.1143/JJAP.43.405