Abstract

The paper describes an interference refractometer for liquids and gases which operates automatically and reads out in digital or analog form. A compensating technique using white light is used for measurement. Zero adjustment is achieved by rotating the compensator and capturing the zero-order white light fringe by photoelectric means. Measurement of the path difference compensated by the compensator is based on electronic interpolation and counting of interference fringes by optointerferometric means, a time division multiplex technique with pulse amplitude modulation being used to obtain the electrical fringe signals.

© 1968 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Dynamic pressure sensing with a fiber-optic polarimetric pressure transducer with two-wavelength passive quadrature readout

Norbert Fürstenau, Markus Schmidt, Wojtek J. Bock, and Waclaw Urbanczyk
Appl. Opt. 37(4) 663-671 (1998)

Self-referenced method for optical path difference calibration in low-coherence interferometry

M. Laubscher, L. Froehly, B. Karamata, R. P. Salathé, and T. Lasser
Opt. Lett. 28(24) 2476-2478 (2003)

Digital error-signal extraction technique for real-time automatic control of optical interferometers

F. Barone, E. Calloni, L. Di Fiore, A. Grado, L. Milano, and G. Russo
Appl. Opt. 34(35) 8100-8105 (1995)

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

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