Abstract

A mathematical model for photon behavior within a spherical integrating-cavity absorption meter (ICAM) that does not depend on the assumption of a homogeneous energy density within the cavity has been developed. Explicit expressions for the proportion of emitted or reflected photons that survive a single transit across the cavity, the average number of collisions with the wall per photon, and the average path length per photon, are derived for an absorbing nonscattering medium. Monte Carlo modeling shows that operation of the ICAM is essentially unaffected by scattering, in agreement with the experimental observations of Fry et al. [Appl. Opt. 31, 2055 (1992)]. Calculations for the performance of the absorption meter as a function of the cavity diameter, the absorption coefficient of the medium, and the reflectivity of the cavity are presented.

© 1995 Optical Society of America

Full Article  |  PDF Article

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 (6)

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 (46)

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