Numerical analysis of Pr/sup 3+/-doped fluoride fiber amplifier

Author

Karasek, M.

Author_Institution

Inst. fuer Hochfrequenztechnik, Technische Univ., Braunschweig, Germany

Volume

4

Issue

11

fYear

1992

Firstpage

1266

Lastpage

1269

Abstract

A large-signal model for a four-level laser system has been used to study the small-signal and large-signal properties of a praseodymium-doped fluoride fiber amplifier. The model takes into account the LP/sub 1/ mode radial field distribution in step-index single-mode fiber and experimentally obtained signal emission and pump absorption cross-sections. It has been found that the optimum cutoff wavelength is 750 nm and is independent of numerical aperture and input pump power. The numerical aperture should be made as high as possible.<>

Keywords

fibre lasers; laser theory; optical pumping; praseodymium; 750 nm; LP/sub 1/ mode radial field distribution; Pr/sup 3+/-doped fluoride fiber amplifier; four-level laser system; input pump power; large-signal model; large-signal properties; numerical analysis; numerical aperture; optimum cutoff wavelength; pump absorption cross-sections; signal emission cross section; small signal properties; step-index single-mode fiber; Absorption; Erbium-doped fiber lasers; Laser excitation; Laser modes; Laser transitions; Numerical analysis; Optical fiber amplifiers; Optical propagation; Power system modeling; Pump lasers;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.166964

Filename

166964