Synthetic Metals · 2001 · 27 citations · 0 references
Natural SciencesChemistryMaterials ScienceOptical MaterialsOpticsPhotonicsLaser PhysicsLuminescent MaterialsNonlinear OpticsOptoelectronic MaterialsPhotonic MaterialsUpconversion MaterialsFrequency Conversion MaterialsLaser Gain MaterialsLaser MaterialsOptical Gain MaterialsUpconversion Luminescence