Cross-relaxation processes in Nd-doped selenide glass and 5.7 μm laser action in it

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2025-01-17 DOI:10.1016/j.jlumin.2025.121089

M.P. Frolov , B.I. Denker , B.I. Galagan , V.V. Koltashev , V.G. Plotnichenko , YaK. Skasyrsky , M.V. Sukhanov , S.E. Sverchkov , A.P. Velmuzhov

引用次数: 0

Abstract

It was found that the low-lying levels of Nd³⁺ (⁴I_15/2 and ⁴I_13/2) in selenide glass are the subject to intense cross-relaxation at the concentration of 10²⁰ ions per cm³. This circumstance allowed to implement a cross-relaxation pumping scheme of a ∼5.7 μm Nd-doped selenide glass laser. The laser was pumped at 2.53 μm into the absorption band corresponding to ⁴I_13/2 level. The upper laser level ⁴I_11/2 was excited due to the cross-relaxation process producing two ions at the upper laser level per each pump photon. Output energy of up to 26 mJ at a slope efficiency of 12 % was demonstrated.

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来源期刊

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.