Abstract

The optical constants of a surface from which plane polarized light is reflected may be determined by measuring the principal angle of incidence, ϕ¯, and the principal azimuth ψ¯. If the polarizer be rotated and the reflected light be examined by an analyzer, the intensity is modulated at twice the frequency of rotation. The resultant signal vanishes at ϕ¯,ψ¯, a tuning condition which is unique, is easily found and is not affected by polarizing influences subsequent to the analyzer

The effect of stray polarization is examined and it is shown that the quality of the polarizer affects only the sensitivity. The bearing of the signal to noise ratio on experimental errors is considered since this ratio is limited in the infrared. It is shown that the method is valuable if the extinction coefficient lies in the range 0.4≤κ≤5.5. Outside this range the accuracy rapidly deteriorates. This limitation is shared by all techniques based on measurement of the principal angles. Experimental details and results are presented.

© 1954 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
On a Systematic Error in the Measurement of Optical Constants

G. K. T. Conn and G. K. Eaton
J. Opt. Soc. Am. 44(6) 477-483 (1954)

On the Analysis of Elliptically Polarized Radiation in the Infrared Region

G. K. T. Conn and G. K. Eaton
J. Opt. Soc. Am. 44(7) 546-552 (1954)

Optical Constants in the Infrared for Aqueous Solutions of NaCl†

Marvin R. Querry, Richard C. Waring, Wayne E. Holland, G. Michael Hale, and William Nijm
J. Opt. Soc. Am. 62(7) 849-855 (1972)

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 (8)

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 (3)

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