Method for the quantitative measurement of the pulse laser...

Details Method for the quantitative measurement of the pulse laser... Method for the quantitative measurement of the pulse laser...

2007-09-18

2007-09-18

Chowdhury, Tarifur (Department: 2886)

Optics: measuring and testing

For light transmission or absorption

Reexamination Certificate

active

10887421

ABSTRACT:
The present invention refers to a method for the quantitative measurement of the pulse laser stability of synthetic fused silica, whereby this method avoids time-consuming and demanding measurements and saves material. First, the absorption of fused silica is measured for different energy densities, and a non-linear function α1(H) is determined on the basis of the measured values. Second, the fused silica is subject to radiation with a higher energy density up to the point at which a constant absorption value is achieved. In the following, the absorption of the fused silica is measured at different energy densities, and a non-linear function α2(H) is determined. The difference between the two non-linear functions indicates the increase of absorption that depends on the energy density.

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W. Triebel et al.; “Simultaneous measurement of bulk absorption and fluorescence in fused silica upon ArF laser irradiation”; Proc. of SPIE, vol. 4779, pp. 107-116, 2002.

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