Abstract

A Michelson interferometer setup was used to determine refractive index and thickness of a fused-quartz sample with no knowledge of either parameter. At small angles, <10°, the interferometer equation follows a fourth-order polynomial in the sample refractive index alone, effectively decoupling the sample thickness from the equation. The incident angle of the He–Ne laser beam versus fringe shift was fitted to the polynomial, and its coefficients obtained. These were used to determine refractive index to within 6×104 of the known value with an accuracy of ±1.3%. Sample thickness was determined to an accuracy of ±2.5%. Reproducibility of the rotating table was determined to be ±2×103 degrees.

© 2007 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Measurement of refractive index and thickness of transparent plate by dual-wavelength interference

Hee Joo Choi, Hwan Hong Lim, Han Seb Moon, Tae Bong Eom, Jung Jin Ju, and Myoungsik Cha
Opt. Express 18(9) 9429-9434 (2010)

Dispersion-insensitive measurement of thickness and group refractive index by low-coherence interferometry

Dominic F. Murphy and Dónal A. Flavin
Appl. Opt. 39(25) 4607-4615 (2000)

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 (5)

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

Tables (2)

You do not have subscription access to this journal. Article tables 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 (36)

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