Abstract
Thin tellurium films are deposited on glass and irradiated by a continuous Ar+ laser beam. The maximum dimension of the laser-oxidized zone d is measured as a function of the laser beam power P. The temperature T at the end of 180 s of irradiation is measured by an interferometric method. It is found that T is independent of P between 1.3 and 2.4 W. This correlates with the variation of d with P, at constant T, due to negative feedback between optical absorption and oxidation.
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