Two-photon absorption properties of commercial fused silica and germanosilicate glass at 264 nm

Dragomir, Adrian; McInerney, John G.; Nikogosyan, David N.; Kazansky, Peter G.
February 2002
Applied Physics Letters;2/18/2002, Vol. 80 Issue 7, p1114
Academic Journal
Using high-intensity femtosecond pulses at λ=264 nm, we have measured the two-photon absorption (TPA) coefficient in three fused silica samples Suprasil, Herasil, Infrasil (Heraeus) and in 3.5 mol% Ge-doped fused silica. While in fused silica samples the TPA coefficient value is about 2 X 10[SUP -11] cm/W, in germanosilicate glass it equals (42±3) X 10[SUP -11] cm/W.


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