New results on characterization of highly transparent C-modification Lu₂O₃ nanocrystalline ceramics: room-temperature tunable CW laser action of Yb³⁺ ions under LD-pumping and the propagation kinetics of non-equilibrium acoustic phonons

Abstract

We report on the first achievement of CW oscillation in Yb3+:Lu2O3 ceramic lasers (2F5/2 → 2F7/2 channel) under LD‐pumping at 0.976 µm wavelength, as well as present of the thickness of grain boundary layers in Lu2O3 ceramics was estimated under non‐equilibrium acoustic phonon propagation kinetics at helium temperature (2.4–3.8 K). (© 2006 by Astro, Ltd. Published exclusively by WILEY‐VCH Verlag GmbH & Co. KGaA)

Dependence of spectroscopic and thermal properties on concentration and temperature for Yb:Y2O3 transparent ceramics

“…The technology of ceramic has the potential not only for controlling spatial distribution of the gain, possibility of fabrication larger size elements, facile mass production and low preparation cost, etc., but also achieving higher doping concentration than that in single crystal [2,3]. Moreover, transparent ceramic technique makes rare-earth sesquioxides (such as Y 2 O 3 , Lu 2 O 3 , Sc 2 O 3 ) possible for laser host materials applications [4][5][6]. Furthermore, yttria (Y 2 O 3 ) shows high density, high refractive index, good chemical stability, broad range of transparency, high absorption efficiency, large stimulated emission, etc.…”

Spectral properties of Yb3+ ions in Lu3ScAl4O12 single crystal

“…In recent years, ytterbium doped laser crystals have attracted considerable attention [1][2][3][4][5][6]. Trivalent ytterbium has important advantages in comparison with the widely used Nd laser in 1 m laser applications.…”

Mechanical and optical properties of Lu2O3 host-ceramics for Ln3+ lasants

“…d) Ytterbium two-band CW generation with LD pumping was achieved in [4,7,13]. e) In [2] femtosecond pulses were achieved by KLM method and in [11] by use of a semiconductor saturable absorber mirror (SESAM).…”