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Opt Lett. 2005 Apr 15;30(8):854-6.

Widely tunable 1.94-microm Tm:BaY2F8 laser.

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  • 1Istituto di Fotonica e Nanotecnologie, Consiglio Nazionale delle Ricerche, Dipartimento di Fisica del Politecnico di Milano, Piazza Leonardo da Vinci 32, Milano 20133, Italy.


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.

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