论文信息 - Highly nonlinear near-resonant photodarkening in a thulium-doped aluminosilicate glass fiber.

Highly nonlinear near-resonant photodarkening in a thulium-doped aluminosilicate glass fiber.

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.

[1] Anne C. Tropper,et al. Frequency upconversion in Tm- and Yb:Tm-doped silica fibers , 1990 .

[2] R L Cone,et al. Ultraviolet-induced distributed-feedback gratings in Ce(3+) -doped silica optical fibers. , 1991, Optics letters.

[3] S. P. Craig-Ryan,et al. Amplified spontaneous emission in Tm3+‐doped monomode optical fibers in the visible region , 1990 .

[4] C. A. Millar,et al. Photochromic behaviour of thulium-doped silica optical fibres , 1988 .

[5] J R Simpson,et al. Photoinduced second-harmonic generation in rare-earth-doped aluminosilicate optical fibers. , 1991, Optics letters.

[6] Richard C. Powell,et al. Characteristics of laser-induced gratings in Pr 3+ - and Eu 3+ -doped silicate glasses , 1990 .