Amplified spontaneous emission in doped alkali-halides
Anno: 1983
Autori: Pazzi G.P., Baldecchi M.G., Fabeni P., Linari R., Ranfagni A., Agresti A., Cetica m., Simkin D.J.
Affiliazione autori: Istituto di Ricerca sulle Onde Elettromagnetiche, Consiglio Nazionale delle Ricerche, (IROE-CNR), Via Panciatichi 64, 50127 Firenze, Italy;
Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy;
Dep. of Chemistry, McGill University, Montreal, Canada
Abstract: This work is concerned with the possibility of getting optical amplification in the uv/visible region by means of doped alkali-halides crystals, pumped by a Nitrogen laser. The Amplified spontaneous Emission (ASE) technique is adopted with the continuous recording of the luminescence intensity as a function of either the pump intensity or the pumped length. in the latter case the pumping beam inhomogeneity is taken into account. A CsI crystal doped with In+ and T1+ was investigated at room temperature. the fast component of the emission (~ 10 ns) at 430 nm showed a gain of about 1.5 with a pumping of 104 w/cm on a length of Smm. There is experimental evidence that the active element is thallium after investigation on CsI:T1+ and CsI:In+ crystals. Negative results of amplification for KI:TI+ were obtained.
Giornale/Rivista: PROCEEDINGS OF SPIE
Volume: 369 Da Pagina: 338 A: 344
Parole chiavi: amplified sponataneous emission