Abstract

The time dependent temperature distribution produced in absorption calorimetry of very transparent ir materials with a laser is calculated using finite Fourier transforms. The solutions are then applied to obtain a function that yields numerical corrections for the constant-temperature assumption used in laser calorimetry. The results show that the corrections become significant for large diameter samples and when measuring the absorption loss of coatings deposited on the surfaces of the bulk material.

© 1975 Optical Society of America

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