Self-induced pulsations that are associated with atomic interference have been found in a laser-diode-pumped LiNdP<sub>4</sub>O<sub>12</sub> microchip laser with an intracavity KTP frequency-doubling crystal operating in a Λ scheme. The instability and peculiar pulsations that were observed have been verified by a linear stability analysis and numerical simulation of two-mode laser equations, including nonlinear absorptions of a purely quantum nature and spontaneous-emission noise.
© 2001 Optical Society of America
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.3580) Lasers and laser optics : Lasers, solid-state
(190.2620) Nonlinear optics : Harmonic generation and mixing
(270.3100) Quantum optics : Instabilities and chaos
Kenju Otsuka, Jing-Yuan Ko, Shin-ichi Higashihara, and Jyh-Long Chern, "Pulsations induced by quantum interference in a microchip solid-state laser operating on a Λ transiton," Opt. Lett. 26, 536-538 (2001)