Experimental and numerical investigation to rationalize both near-infrared and mid-infrared spontaneous emission in Pr3+ doped selenide-chalcogenide fiber

Abstract

This contribution reports on detailed experimental and numerical investigations of both near-infrared (NIR) and mid-infrared (MIR) photoluminescence obtained in praseodymium trivalent ion doped chalcogenide-selenide glass fiber. The experimental analysis allows for the identification of the radiative transitions within the praseodymium ion energy level structure to account for the photoluminescent behavior. Numerical analysis is carried out using the rate equations' approach to calculate the level populations. The numerical analysis provides further insight into the nature of the radiative transitions in the Pr 3+ ion doped chalcogenide-selenide glass and allows for the identification of the electronic transitions, which contribute to the observed photoluminescence. The numerical results agree well with the experimental results.

Mid-infrared sources for biomedical applications based on chalcogenide glass fibres

“…A detailed experimental and numerical analysis of near-infrared and mid-infrared photoluminescence in a Pr 3+ -doped multi-phonon step-index chalcogenide-selenide glass fibre was carried out in [37].The numerical results not only agreed qualitatively with the experimental observations, but also allowed identification of the dominant electronic transitions contributing to the experimentally observed photoluminescence. Importantly, the numerical analysis made clear why the observed photoluminescent lifetime within the MIR wavelength range is shorter than that expected from Judd-Ofelt analysis.…”

Milliwatt-Level Spontaneous Emission Across the 3.5–8 µm Spectral Region from Pr3+ Doped Selenide Chalcogenide Fiber Pumped with a Laser Diode

“…Despite the observation of spontaneous emission from the ( 3 F 4 , 3 F 3 ) degenerate levels to the 3 H 4 ground state at ca. 1.6 µm wavelength, which have already been reported in a Pr 3+ -doped selenide chalcogenide glass [40][41][42][43][44], there is only very recent evidence for emission from this transition in the MIR region beyond 6.5 µm in the literature to date [19]; hence, this a focus of this contribution.…”

Smart Textile Optoelectronics for Human‐Interfaced Logic Systems

“…Compared to visible light, IR light especially near-infrared (NIR) and mid-infrared (MIR) light shows low signal attenuation, thus it plays a dominant role in the optical communication platforms of biomedical engineering, environmental monitoring, and remote control. [181][182][183][184] Several IR-responsive fiber/textile photodetectors have been developed for wearable optical communication. For instance, Li et al constructed a NIR-driven mechano-optical communication system based on a Te@TeSe@carbon textile photodetector [185] (Figure 4c).…”