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Optics Letters

Optics Letters


  • Vol. 24, Iss. 10 — May. 15, 1999
  • pp: 670–672

Interferometry with optical pickups

Franco Quercioli, Bruno Tiribilli, and Alessandro Bartoli  »View Author Affiliations

Optics Letters, Vol. 24, Issue 10, pp. 670-672 (1999)

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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.

© 1999 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.6660) Instrumentation, measurement, and metrology : Surface measurements, roughness
(180.3170) Microscopy : Interference microscopy

Franco Quercioli, Bruno Tiribilli, and Alessandro Bartoli, "Interferometry with optical pickups," Opt. Lett. 24, 670-672 (1999)

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