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

A. A. Kaminskii,S. N. Bagayev,K. Ueda,K. Takaichi,A. Shirakawa,S. N. Ivanov,E. N. Khazanov,A. V. Taranov, H. Yagi,T. Yanagitani

Laser physics letters（2006）

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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).

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Key words

solid-state lasers,tunable ceramic lasers,Yb3+ : Lu2O3 lasers,laser ceramics,LD pumping,non-equilibrium phonons,ceramic grain boundaries,heat-pulse technique

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