Successive excited-state absorption through a multistep process in highly Er(3+)-doped fiber pumped by a 1.48-micron laser diode

The fluorescence spectra ranging from 400 to 1000 nm were investigated on highly Er(3+)-doped fiber pumped by a 1.48-micron laser diode. A strong green emission was observed. An investigation of the fluorescence intensity dependence on pump power revealed that the green emission is attributed to suc...

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Bibliographic Details
Published in:Optics letters 1992-12, Vol.17 (23), p.1679-1681
Main Authors: ARAHIRA, SHIN, Watanabe, Kenji, Shinozaki, Keisuke, Ogawa, Y O H
Format: Article
Language:English
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Summary:The fluorescence spectra ranging from 400 to 1000 nm were investigated on highly Er(3+)-doped fiber pumped by a 1.48-micron laser diode. A strong green emission was observed. An investigation of the fluorescence intensity dependence on pump power revealed that the green emission is attributed to successive excited-state absorption through a three-step process and also that saturation of the atomic levels that contribute to the emission occurs. (Author)
ISSN:0146-9592