Enhanced Raman gain coefficients and bandwidths of sodium-niobium-phosphate glasses for Raman gain media
- 1Außenstelle Neapel, Istituto per la Microelettronica e Microsistemi
- 2Istituto per i Processi Chimico-Fisici (CNR-IPCF)
- 3Dipartimento di Meccanica e Materiali, Facoltà di Ingegneria, Università degli Studi Mediterranea di Reggio Calabria
- 4Polytechnische Universität Peter der Große Sankt Petersburg
- 5Research and Technological Institute of Optical Materials Science (NITIOM), S. I. Wawilow-Staatliches Optisches Institut
- 6Istituto di Fisica Applicata "Nello Carrara" (IFAC), Istituto di Fisica Applicata Nello Carrara
In recent years, several strategies have been developed in order to demonstrate integrated light sources. Among them, the possibility of light amplification and/or generation based on Raman emission has achieved significant results. In this paper, sodium-niobium phosphate glasses doped with rare earths (Er and Sm) have been investigated by Raman spectroscopy. Spectral features pertaining to Nb- and P-related structures in the glasses are clearly observed. Their combination enormously increases the bandwidth of the Raman spectra with respect silica glasses. The calculated Raman gain coefficient G is approximately 24 times higher than in conventional silica glasses, pointing out the promising characteristics of these sodium-niobium-phosphate glasses for the realization of Raman amplifiers[1]. [1]L. Sirleto, M.G. Donato, G. Messina, S. Santangelo, A.A. Lipovskii, D.K. Tagantsev, S. Pelli and G.C. Righini6 Raman gain in Niobium-Phosphate Glasses, accepted Applied Physics Letters