Title :
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
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;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2005.862044
