Clad-pumped Yb,Er codoped fiber lasers

Author

Cheo, P.K. ; King, G.G.

Author_Institution

PC Photonics Corp., Waterford, CT, USA

Volume

13

Issue

3

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

188

Lastpage

190

Abstract

Double-clad and Yb,Er codoped fiber lasers emitting at eye-safe wavelengths (>1.5 μm) have been investigated by varying the codopant concentrations, core modifiers, fiber length, and the spectrum of the diode pump. With a proper composition, the laser output contains only one lasing wavelength, at 1.6 μm. Highest slope efficiency greater than 60% for this three-level system, emitting only at 1.6 μm, has been obtained by using a 20-m-long, double-clad and codoped fiber with the core and clad diameters of 6.3 and 300 μm, respectively. By tradeoff of slope efficiency fur higher output power, a 30-m-long fiber is considered to be the best choice.

Keywords

erbium; fibre lasers; laser transitions; optical fibre cladding; optical pumping; safety; ytterbium; 1.5 mum; 1.6 mum; 20 m; 30 m; 300 mum; 6.3 mum; 60 percent; Yb,Er codoped fiber lasers; clad-pumped Yb,Er codoped fiber lasers; codopant concentrations; diode pump; double-clad; eye-safe wavelengths; fiber length; laser output; lasing wavelength; output power; slope efficiency; three-level system; Absorption; Diodes; Erbium; Erbium-doped fiber lasers; Fiber lasers; Laser excitation; Power generation; Pump lasers; Silicon compounds; Stationary state;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.914316

Filename

914316