Pr^3+-doped fluoride fiber amplifier operating at 131 μm

Abstract

We propose what is to our knowledge the first use of a Pr(3+)-doped fluoride fiber amplifier as a practical amplifier operating at the 1.3-microm band, based on a demonstration of signal amplification and a spectroscopic investigation. The feasibility of the fluoride fiber amplifier is confirmed.

Pr^3+-doped GeSx-based glasses for fiber amplifiers at 13 μm

“…In Table 3 the (s e 2 s ESA ͒t e product (which determines the pump power efficiency of a fiber amplifier) and other radiative parameters for various sulfide glasses and ZBLAN are listed. 1,2,4,16,17 The (s e 2 s ESA ͒t e product of (GeS 2 ) 80 (Ga 2 S 3 ) 20 chalcogenide glass is 250 3 10 226 cm 2 s, comparable with that of Ga-La sulfide glass 1 and nearly seven times that of ZBLAN. This would provide for high pump power efficiencies of the order of 1 dB͞mW with adequate fiber design parameters.…”

“…The product of s e t e determines, along with fiber design parameters, the small-signal gain coefficient or pump power efficiency of a fiber amplifier. 3 By use of ZBLAN (ZrF 4 -BaF 2 -LaF 3 -AlF 3 -NaF) fluoride glass, fiber amplifiers have already been developed, 4,5 with 0.2 dB͞mW as a typical pump power efficiency. Here we report on the photoluminescence properties of Pr 3+ -doped GeS x -based glasses and assess the attainability of highly efficient fiber amplifiers.…”

Infrared luminescence and amplification properties of Bi-doped GeO2−Ga2O3−Al2O3 glasses

“…26 The internal gain is defined by 10 log͑I / I 0 ͒ where I and I 0 represent the optical signal with and without a pumping source, respectively. 27 In the process of gain measurement, it was observed that the continued laser irradiation may lead to a glass temperature rise. It may an induce measurement error which was estimated to be about 0.2 dB.…”

Tuning the Decay Time of Lanthanide‐Based Near Infrared Luminescence from Micro‐ to Milliseconds through d→f Energy Transfer in Discrete Heterobimetallic Complexes

“…[9] Lanthanide-based NIR emitters are also used for optical amplification in lasers [10] and silica-based fiber optic networks, for which the emission wavelengths (1330 nm for Pr III and 1550 nm for Er III ) match the "window of transparency" in silica used for telecommunication. [11] Potential applications are thus obvious, but designing efficient sensitization for lanthanide-based NIR emitters remains a challenge, because the Laporte-forbidden 4f!4f transitions prevent direct excitation of the photoluminescence. [10] For Pr III , Nd III , and Er III , the plethora of accessible excited levels in the 6000-35000 cm À1 range is compatible with indirect sensitization processes, during which a suitable aromatic chromoAbstract: Inert and optically active pseudo-octahedral Cr III N 6 and Ru II 6 (Ln = Nd, Eu, Yb, Lu) and [RuLnL 3 ]-(CF 3 SO 3 ) 5 (Ln = Eu, Lu) demonstrate that the helical structure can accommodate metal ions of different sizes, without sizeable change in the intermetallic M···Ln distances.…”