Two‐photon absorption and photoconductivity in photosensitive glasses

Autor:	Peter S. Weitzman, Ulf Osterberg
Rok vydání:	1996
Předmět:	Optical fiber Materials science Silica fiber business.industry Photoconductivity General Physics and Astronomy Two-photon absorption law.invention Photosensitivity law Attenuation coefficient Optoelectronics business Absorption (electromagnetic radiation) Luminescence
Zdroj:	Journal of Applied Physics. 79:8648-8655
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.362488
Popis:	We have measured the two‐photon absorption coefficent at 0.527 μm to be 1.8±0.4×10−3 cm/GW in a germanium‐doped silica fiber. Using absorption and luminescence measurements we estimated the two‐photon absorption coefficient at 1.053 μm to be smaller than 6×10−7 cm/GW. Using a capacitive technique we measured the photoconductivity to be approximately 6×10−9 1/Ω cm in the visible. The photoconductivity inreased linearly with intensity. A qualitative discussion of the defect dynamics related to photosensitive phenomena in optical glass fibers is given based on the experimental results.
Databáze:	OpenAIRE
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