Fabrication and characterization of mid-infrared emission of Pr³⁺ doped selenide chalcogenide glasses and fibres

Abstract

Mid-infrared (2.8–5.5 μm) Pr3+ (2050 ppmw) doped fibres were obtained and characterized under the pump of a 2.0 μm laser.

Effect of glass composition on the physical properties and luminescence of Pr3+ ion‐doped chalcogenide glasses

“…[1][2][3][4] MIR light sources play a vital role in many applications, including biomedical sensing, environmental monitoring, and quality monitoring; thus, these sources have grown rapidly in recent years. [1][2][3][4] MIR light sources play a vital role in many applications, including biomedical sensing, environmental monitoring, and quality monitoring; thus, these sources have grown rapidly in recent years.…”

“…[1][2][3][4] MIR light sources play a vital role in many applications, including biomedical sensing, environmental monitoring, and quality monitoring; thus, these sources have grown rapidly in recent years. [10][11][12] Chalcogenide glasses (ChG) have several properties that make them attractive as a host of rare earth (RE) ions for MIR emission 2,8,[12][13][14][15] (eg, high transparency in a wide spectral range of 0.5-20 µm depending on the composition, low optical loss in the MIR, high refractive index(n), relatively high solubility of RE elements, and low phonon energy). [10][11][12] Chalcogenide glasses (ChG) have several properties that make them attractive as a host of rare earth (RE) ions for MIR emission 2,8,[12][13][14][15] (eg, high transparency in a wide spectral range of 0.5-20 µm depending on the composition, low optical loss in the MIR, high refractive index(n), relatively high solubility of RE elements, and low phonon energy).…”

“…Studies of Se-and S-based ChG have attracted considerable interest. 2,17 However, the selenide matrix exhibits a higher refractive index than the sulfide matrix to achieve high RE ion radiation efficiency. 1,14 In addition, the phonon energy of sulfur-based (400-450 cm −1 ) glasses and Se-based (approximately 350 cm −1 ) glasses is lower than those of fluoride glasses and oxide glasses, 2,16 thereby resulting in a small multiphonon nonradiative relaxation probability, and increasing the quantum efficiency of MIR transitions.…”

“…2,17 However, the selenide matrix exhibits a higher refractive index than the sulfide matrix to achieve high RE ion radiation efficiency. 2,15 Shaw et al reported the 3-5 μm IR transitions in Pr 3+ ion-doped Ba-In-Ga-Ge selenide glasses for the first time. 12,15 Developing MIR optical fiber lasers and amplifiers using Pr 3+ ion-doped ChG due to high quantum efficiency of optical transitions in the MIR region is promising.…”

“…Mid-infrared (MIR) spectrum covers an important atmospheric window in the wavelength range of 3-5 μm, and the resonant oscillation frequency of many molecular bonds falls within the MIR wavelength range. [1][2][3][4] MIR light sources play a vital role in many applications, including biomedical sensing, environmental monitoring, and quality monitoring; thus, these sources have grown rapidly in recent years. [5][6][7][8][9] In addition, the new MIR wavelength is also meaningful for laser processing and material welding, such as human tissue cutting and welding, neurosurgery, and dermatology.…”