1.6 μm emission from Pr3+: (3F3,3F4)→3H4 transition in Pr3+- and Pr3+/Er3+-doped selenide glasses

Abstract

1.6 μm emission originated from Pr3+: (3F3,3F4)→3H4 transition in Pr3+- and Pr3+/Er3+-doped selenide glasses were investigated under an optical pump of a conventional 1480 nm laser diode. The measured peak wavelength and full width at half maximum of the fluorescent emission were ∼1650 and >100 nm, respectively. A moderate lifetime of the thermally coupled upper manifolds (∼212±5 μs) together with a high stimulated emission cross section of ∼(3±1)×10−20 cm2 promises to be useful for 1.6 μm band fiber-optic amplifier that can be pumped with an existing high-power laser diode. Codoping of Er3+ significantly enhanced the emission intensity by way of a nonradiative Er3+: 4I13/2→Pr3+: (3F3,3F4) energy transfer.

Photoluminescence of Pr3+-, Nd3+- and Ni2+-doped TeO2–ZnO–WO3–TiO2–Na2O glasses

“…The detector response did not allow us to measure the emission spectra beyond 800 nm. Three emission bands centered at 534 nm ( 3 P 0 → 3 H 5 ), 615 nm ( 3 P 0 → 3 H 6 ) and 647 nm ( 3 P 0 → 3 F 2 ) are observed from this spectrum [25][26][27]. Fig.…”

Superbroadband near-infrared emission and energy transfer in Pr^3+-Er^3+ codoped fluorotellurite glasses

“…Apart from the well-known 1.3 μm emission ( 1 G 4 → 3 H 5 transition) [14], an emission around 1.6 μm from the 3 F 3,4 → 3 H 4 transition was also observed in Pr 3+ -doped selenide glass [15]. We recently observed superbroadband near-infrared luminescence in Pr 3+ -doped bismuth gallate glass [16].…”

Local structure and its effect on the oscillator strengths and emission properties of Ho3+ in chalcohalide glasses

“…However, the phonon energy of sulfide glass ($350 cm À1 ) is still high for such transitions as Dy 3+ :1.3 lm useful for the fiber-optic amplifiers [3,4]. Then, it becomes necessary to use selenide or chalcohalide glasses as host materials since they have the low phonon energy of $200 cm À1 [5].…”