title: Widely tunable 1.94-microm Tm:BaY2F8 laser.
abstract: A novel BaY2F8 crystal doped with thulium ions is grown and extensively investigated. Owing to the large number of vibronic levels and to a favorable electron-phonon coupling, extremely wide absorption and emission bands around 1.9 microm are observed. A room-temperature Tm:BaY2F8 laser tunable over a 210-nm interval, from 1849 to 2059 nm, is demonstrated.
authors.affiliation: Istituto di Fotonica e Nanotecnologie, Consiglio Nazionale delle Ricerche, Dipartimento di Fisica del Politecnico di Milano, Piazza Leonardo da Vinci 32, Milano 20133, Italy. gianluca.galzerano@fisi.polimi.it
authors.forename: Gianluca
authors.initials: G
authors.lastname: Galzerano
authors.forename: Francesco
authors.initials: F
authors.lastname: Cornacchia
authors.forename: Daniela
authors.initials: D
authors.lastname: Parisi
authors.forename: Alessandra
authors.initials: A
authors.lastname: Toncelli
authors.forename: Mauro
authors.initials: M
authors.lastname: Tonelli
authors.forename: Paolo
authors.initials: P
authors.lastname: Laporta