Stokes-like IR (1560–1600-nm) emissions, which have been observed in laser-diode- (LD-) pumped microchip Nd-doped lasers, are re-examined experimentally. Dependences of IR emissions on pump wavelengths, pump densities, and operating temperatures are studied. The response of IR emissions to coherent probe-beam injection is investigated by use of a tunable LD light source. Optical phonons emitted through Auger recombination processes that result from LD high-density pumping are proposed to induce resonant intracavity stimulated phonon-sideband emissions.
© 2002 Optical Society of America
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.3580) Lasers and laser optics : Lasers, solid-state
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(190.5650) Nonlinear optics : Raman effect
Jyh-Long Chern, Tamaki Kubota, Tsong-Shin Lim, and Kenju Otsuka, "Stokes-like emissions from laser-diode-pumped microchip neodymium-doped solid-state lasers," J. Opt. Soc. Am. B 19, 1668-1675 (2002)