Highly nonlinear near-resonant photodarkening in a thulium-doped aluminosilicate glass fiber.
Identifieur interne : 000331 ( Ncbi/Checkpoint ); précédent : 000330; suivant : 000332Highly nonlinear near-resonant photodarkening in a thulium-doped aluminosilicate glass fiber.
Auteurs : M M Broer ; D M Krol ; D J DigiovanniSource :
- Optics letters [ 0146-9592 ] ; 1993.
Abstract
Permanent photoinduced optical attenuation has been observed in Tm(3+)-doped aluminosilicate glass fibers on exposure to near-resonance mode-locked 1064-nm radiation at 300 K. The rate of this darkening was observed to follow a 4.7 +/- 0.4 power dependence on the 1064-nm intensity. The result shows that absorption of infrared light of moderate intensity can lead to photoionization in rare-earth-doped glass, provided that a multiphoton stepwise excitation channel exists.
PubMed: 19802277
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