The influence of pump wavelength on Er:YAG Green-emitting laser characteristics

Author

Toma, Octavian ; Georgescu, Serban

Author_Institution

Solid-State Quantum Electron. Lab., Nat. Inst. for Laser, Bucharest-Magurele, Romania

Volume

42

Issue

2

fYear

2006

Firstpage

192

Lastpage

197

Abstract

Mathematical modeling is used to study the influence of pump wavelength on the emission of an Er(0.5 at.%):YAG laser on the transition ⁴S₃2/→⁴I₁₅2/ (561 nm). Three pump wavelengths (direct pumping: 488 nm, upconversion pumping: 800 and 810 nm) are investigated and the corresponding laser emission regimes are discussed. For upconversion pumping, we find an optimum pump wavelength and optimum resonator losses for lowering of the continuous-wave emission threshold.

Keywords

erbium; laser cavity resonators; laser theory; laser transitions; optical frequency conversion; optical losses; optical pumping; solid lasers; stimulated emission; 488 nm; 561 nm; 800 nm; 810 nm; Er:YAG laser; YAG:Er; YAl5O12:Er; continuous-wave emission threshold; direct pumping; green-emitting laser characteristics; laser emission regimes; laser transition; optimum resonator losses; pump wavelength; upconversion pumping; Chemical lasers; Erbium; Laser excitation; Laser modes; Laser theory; Laser transitions; Optical materials; Pump lasers; Semiconductor process modeling; Solid lasers; Continuous-wave (CW) lasers; laser excitation; lasers; pulsed lasers; solid lasers;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2005.862044

Filename

1580648