Interferometry with optical pickups

Year: 1999

Authors: Quercioli F., Tiribilli B., Bartoli A.

Autors Affiliation: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy

Abstract: We describe an interferometer that makes use of an optical pickup. This widespread consumer electronics component has a high degree of technological content. A typical head contains a remarkable, highly integrated sample of optoelectronic laboratory equipment. The application that we report is a significant and novel example of the potential exploitation of the unique features of such a device for scientific aims. Many interferometric configurations can be envisaged, depending on the specific pickup design. We present a Fizeau multiphase homodyne interferometer that makes use of an astigmatic-focus-detection pickup. Its quadrant detector provides four photocurrent signals whose phase delays can be easily controlled. This allows us to apply phase-shifting interferometry algorithms for data reduction. (C) 1999 Optical Society of America

Journal/Review: OPTICS LETTERS

Volume: 24 (10)      Pages from: 670  to: 672

KeyWords: Compact-disk player; Velocimetry; Pickups; Optical data processing; optical pickup
DOI: 10.1364/OL.24.000670

Citations: 13
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