Anti-Stokes Luminescence in LiYF4:Ho3+, Yb3+ Ceramics Excited at 1.93 μm


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Abstract

Conversion of IR radiation of a Tm:YAP laser with a wavelength of 1930 nm into visible light by ceramics of composition LiY(1–x–y) HoxYby, where х = 1–5 mol % and y = 0–15 mol %, is demonstrated. It is shown that the threshold power density of IR light visualization decreases with increasing concentration of Ho3+ ions, while additional doping of ceramic samples with Yb3+ ions changes the anti-Stokes luminescence spectrum. The threshold power density of visualization of the Tm:YAP laser radiation decreases with increasing concentration of holmium ions and is Ithr ≈ 0.8 W cm–2 in the samples of composition LiYF4:5%Ho3+–15%Yb3+.

About the authors

A. P. Savikin

Lobachevskii Nizhny Novgorod State University

Email: budruev@gmail.com
Russian Federation, Nizhny Novgorod, 603950

I. Yu. Perunin

Lobachevskii Nizhny Novgorod State University

Email: budruev@gmail.com
Russian Federation, Nizhny Novgorod, 603950

S. V. Kurashkin

Lobachevskii Nizhny Novgorod State University

Email: budruev@gmail.com
Russian Federation, Nizhny Novgorod, 603950

A. V. Budruev

Lobachevskii Nizhny Novgorod State University

Author for correspondence.
Email: budruev@gmail.com
Russian Federation, Nizhny Novgorod, 603950

I. A. Grishin

Lobachevskii Nizhny Novgorod State University

Email: budruev@gmail.com
Russian Federation, Nizhny Novgorod, 603950

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