Title :
Excited-state absorption and gain measurement at 1.3 μm in Nd 3+ doped silica fibers with different codopants: effect of cesium on ESA cross section
Author :
Rochat, Etienne ; Woodtli, Alain ; Dändliker, René
Author_Institution :
Inst. of Microtechnol., Neuchatel Univ., Switzerland
fDate :
8/1/1997 12:00:00 AM
Abstract :
A study of the excited state absorption (ESA) spectrum around 1.3 μm in Nd3+ doped fibers is presented. Several fibers are characterized with different codopants including germanium, aluminum, and cesium and their effects on the spectrum of the radiative transitions are studied. We found an important variation of the magnitude of the ESA cross section giving rise to gain (0.032 dB/mW) at 1.34 μm
Keywords :
excited states; fibre lasers; fluorescence; gain measurement; impurity absorption spectra; infrared spectra; neodymium; optical fibre testing; solid lasers; 1.3 mum; 1.34 mum; ESA cross section; Nd3+ doped silica fibers; codopants; excited-state absorption; gain measurement; radiative transitions; Absorption; Aluminum; Fluorescence; Gain measurement; Germanium; Neodymium; Optical fiber amplifiers; Optical fibers; Silicon compounds; Stimulated emission;
Journal_Title :
Lightwave Technology, Journal of
