Title :
Saturation factors of pump absorption in solid-state lasers
Author :
Sato, Yoichi ; Taira, Takunori
Author_Institution :
Laser Res. Center, Inst. for Molecular Sci., Okazaki, Japan
fDate :
3/1/2004 12:00:00 AM
Abstract :
Novel models for the saturation factors of absorption under optical pumping in solid-state lasers are derived, and these factors depend on the pumping scheme. We investigated the pump saturation effect in Nd:YVO4 and found that the bleaching of pump absorption due to the depletion of a ground-state level in a direct pumping scheme was more effective than that in a conventional four-level pumping scheme. However, the saturation effect was recovered by lasing.
Keywords :
absorption coefficients; ground states; neodymium; optical pumping; optical saturable absorption; solid lasers; YVO4:Nd; four-level pumping scheme; ground-state level depletion; optical pumping; pump absorption; pump absorption bleaching; saturation factors; solid-state lasers; Absorption; Laser excitation; Laser theory; Laser transitions; Microchip lasers; Optical materials; Optical pumping; Pump lasers; Solid lasers; Stationary state;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2003.823020
