Spatial holeburning in second-order excitation probability distribution for densely erbium-doped fibres

作     者：Helmfrid, S Bremberg, D Jaskorzynska, B Philipsen, JL 

作者机构：Royal Inst Technol Dept Elect Lab Photon & Microwave Engn S-16440 Kista Sweden Tech Univ Denmark COM Ctr DK-2800 Lyngby Denmark 

出 版 物：《ELECTRONICS LETTERS》 (电子学快报)

年 卷 期：1999年第35卷第14期

页      面：1191-1193页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

主　　题：strongly erbium-doped fibres Optical transient phenomena, self-induced transparency, optical saturation and related effects optical pumping Fibre lasers and amplifiers fluorescence erbium Impurity and defect absorption in insulators excited states probability optical hole burning densely erbium-doped fibres Probability theory, stochastic processes, and statistics upconversion rate spatial holeburning enhanced energy redistribution increased upconversion rate Fibre optics impurity absorption spectra second-order excitation probability distribution optical fibre amplifiers Optical saturation and related effects closely located excited ions Optical fibre testing and measurement of fibre parameters decay curve equalisation Photoluminescence in other inorganic materials optical fibre testing Probability and statistics 

摘      要：The increase in upconversion rate in strongly erbium-doped fibres induced by an enhanced energy redistribution is investigated and explained in terms of spatial holeburning in the second-order excitation probability distribution. It is shown that the equalisation of decay curves, where the initial population has been prepared in different ways, is caused by an increased upconversion rate for closely located excited ions.