We report the observation of spatial confinement of a pump beam into a photorefractive solitonic channel induced by luminescence [luminescence induced spatial soliton (LISS)]. Trapped beams have been obtained in erbium doped lithium niobate crystals at concentrations as high as 0.7 mol % of erbium. By pumping at 980 nm, erbium ions emit photons at 550 nm by two-step absorption, wavelength which can be absorbed by lithium niobate and originates the photorefractive effect. The luminescence at 550 nm generates at the same time the solitonic channel and the background illumination reaching a steady-state soliton regime.
Luminescence-induced photorefractive spatial solitons / Fazio, Eugenio; Alonzo, Massimo; F., Devaux; A., Toncelli; M., Bazzan; C., Sada; M., Chauvet. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - STAMPA. - 96:9(2010), pp. 091107-091107-3. [10.1063/1.3313950]
Luminescence-induced photorefractive spatial solitons
FAZIO, Eugenio;ALONZO, Massimo;
2010
Abstract
We report the observation of spatial confinement of a pump beam into a photorefractive solitonic channel induced by luminescence [luminescence induced spatial soliton (LISS)]. Trapped beams have been obtained in erbium doped lithium niobate crystals at concentrations as high as 0.7 mol % of erbium. By pumping at 980 nm, erbium ions emit photons at 550 nm by two-step absorption, wavelength which can be absorbed by lithium niobate and originates the photorefractive effect. The luminescence at 550 nm generates at the same time the solitonic channel and the background illumination reaching a steady-state soliton regime.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
