1.5-μm emissions from Nd:YAG, Nd:YVO4, and LiNdP4 O>12 microchip lasers pumped by laser diodes have been observed. These coherent emissions are attributed to the effect of high-energy modified lattice vibration owing to the existence of Nd ions as well as to stimulated intracavity Raman scattering enhanced by the microchip configuration. A four-wave mixing process involving two lasing fields and a Stokes field was identified as the generator of new adjacent 1.5-mu;m emission.
© 2000 Optical Society of America
Siao-Lung Hwong, Jyh-Long Chern, Kenju Otsuka, Yu-Hsiang Huang, Ryoji Kawai, and Kazuyoshi Ohki, "1.5-μm emissions from laser-diode-pumped Nd-doped microchip solid-state lasers," Opt. Lett. 25, 646-648 (2000)