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Maximum output power of 285 mW is achieved at 2080 nm (Ho3+ emission) with a slope efficiency of 8.3% in a compact intracavity-pumped microchip Ho-laser using stacked Tm:KLuW / Ho:KLuW Nε-cut crystals.
A diode-pumped Q-switched Yb:KLu(WO4)2 mini-laser generated a maximum average output power of 170 mW at 1030 nm. The shortest pulse duration was 165 ns at a pulse repetition rate of 350 kHz.
A diode-pumped Tm, Ho:KLu(WO4)2 microchip laser Q-switched by a Cr2+:ZnS saturable absorber generated average output power of 131 mW at 2061 nm. The shortest pulses had duration of 9 ns and energy of 10 μJ.
KGd(PO3)4 (hereafter KGdP) is a promising bifunctional crystal, in which the laser emission and a nonlinear optical process can occur simultaneously. This paper presents evaluation of its thermal properties, such as linear thermal expansion, thermal conductivity, and thermal diffusivity and anisotropy.
Nonlinear index was investigated in undoped and Yb-doped monoclinic double-tungstates for EparNm and EparNp polarized 819 nm light. Anisotropic n2 with maximum for EparNm in all investigated compounds is proportional to the rare earth ion polarizability.
High quality epitaxial double tungstate crystals were grown and continuous-wave laser operation at 1030 nm was demonstrated for the first time with a 25-/spl mu/m-thin Yb:KYW layer on a KYW substrate.
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