Abstract
To obtain the near infrared luminescence Bi-activated phosphate-aluminum-natrium glasses were synthesized and treated under reduction conditions. The reduction conditions were achieved by different methods: treatment in graphite atmosphere, hydrogen atmosphere, and X-ray irradiation. The spectral-luminescent properties of glass samples were measured and analyzed. Bi-activated phosphate-aluminum-natrium glasses after reduction treatment have shown wide near infrared luminescence with two peaks at the telecommunication windows region. The nature of the luminescent centers in Bi-activated phosphate-aluminum-natrium glasses are discussed. The spectral-luminescent properties of synthesized glasses were studied at the context of Bi-activated glass as the active media for tunable near infrared lasers operating in 1050-1500 nm region. The demonstrated properties of Bi-activated phosphate-aluminum-natrium glass are promising to fill the gap in near infrared lasers operating range.
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