Abstract

A simple synthetic-wavelength interferometer is reported that uses two wavelengths of a multimode laser diode. The difference in interferometric phase measurements at the two wavelengths provides absolute range information to an accuracy of 0.75 μm over an ambiguity interval of 310 μm. The instrument can be used to profile surfaces too rough to be measured by conventional interferometry.

© 1991 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Interferometric profiler for rough surfaces

Paul J. Caber
Appl. Opt. 32(19) 3438-3441 (1993)

Three-color laser-diode interferometer

Peter de Groot
Appl. Opt. 30(25) 3612-3616 (1991)

Interferometric Surface Roughness Measurement

William B. Ribbens
Appl. Opt. 8(11) 2173-2176 (1969)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (1)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription