Optik · 2020 · 50 citations · 68 references
Materials ScienceNio Nanocomposite FilmsOptical MaterialsEngineeringNanomaterialsNanotechnologyOptical PropertiesNon-linear OpticApplied PhysicsOxide ElectronicsNonlinear Absorption CoefficientOptical CeramicLight AbsorptionOptoelectronics
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Observation of stimulated emission by direct three-photon excitation
Guang S. He, Przemyslaw P. Markowicz, Tzu‐Chau Lin et al. · Nature · 2002 · 392 citations