New luminescence bands are observed in KCl containing F and F-aggregate centers under strong excitation with an infrared laser. All these emission bands occur at energies higher than those of the pumping beam. These 'up-conversion' emissions are assigned to transitions from higher excited states of color centers populated by means of multiphoton absorption. Specific relations between the centers and the emission bands are also discussed.
Casalboni, M., Francini, R., Grassano, U.m., Pizzoferrato, R. (1983). NONLINEAR EXCITATION OF NEW EMISSION BANDS IN KCl CRYSTALS CONTAINING COLOR CENTERS. PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 117(2), 493-498.
NONLINEAR EXCITATION OF NEW EMISSION BANDS IN KCl CRYSTALS CONTAINING COLOR CENTERS
CASALBONI, MAURO;FRANCINI, ROBERTO;GRASSANO, UMBERTO MARIA;PIZZOFERRATO, ROBERTO
1983-01-01
Abstract
New luminescence bands are observed in KCl containing F and F-aggregate centers under strong excitation with an infrared laser. All these emission bands occur at energies higher than those of the pumping beam. These 'up-conversion' emissions are assigned to transitions from higher excited states of color centers populated by means of multiphoton absorption. Specific relations between the centers and the emission bands are also discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
