Near-infrared emissions and quantum efficiencies in Tm3+-doped heavy metal gallate glasses for S- and U-band amplifiers and 1.8μm infrared laser

Mid-infrared emission properties and energy transfer evaluation in Tm3+ doped fluorophosphate glasses

“…For broadband optical amplifier, it is required that effective emission bandwidth is as wide as possible to provide multiple channels for signal transmission. The obtained value is comparable to that of gallate glass (223 nm) [34], indicating that FP glass has potential applications in optical amplifiers.…”

Praseodymium ion doped phosphate glasses for integrated broadband ion-exchanged waveguide amplifier

“…Therefore, a figure of merit (FOM) as the product FWHM Â r em is adopted to compare the gain properties of different glass systems [73]. As presented in Table 2, the value of FOM for Pr 3+ in NMAP glasses is larger than those of Tm 3+ in gallate and tellurite glasses for $1.46 lm nearinfrared emission [63,74], but smaller than those of Pr 3+ in fluorotellurite and LCBALP phosphate glasses [62]. Luminescence decay curve of the 1 D 2 level of Pr 3+ -doped NMAP glasses is presented in Fig.…”

Dependence of fluorescence properties on substitution of BaF2 for BaO in barium gallo-germanate glass

“…[1][2][3][4][5][6][7][8] Tm 3+ is a kind of very attractive rare earth emitting around 2.0 μm because its main absorption transition ( 3 H 6 → 3 H 4 ) band near 800 nm overlaps with the emission wavelength of AlGaAs commercial diode lasers [7], which is beneficial to a high pump efficiency. In addition, when the doping concentration is high enough, the 3 F 4 → 3 H 6 transition radiating at around 2.0 μm undergoes a favorable process called crossrelaxation that transforms one absorbed pump photon into two excitations in the 3 F 4 manifold, as is shown in Fig.…”