CROSS SECTIONS, TRANSITION INTENSITY, AND LASER GENERATION AT THE³Р₁→³Н₅ TRANSITION OF Pr³⁺:LiY_0.3Lu_0.7F₄ CRYSTAL

A crystal of LiY_0.3Lu_0.7F₄ doped with Pr³⁺ ions was grown by the Bridgman-Stockbarger method and its spectroscopic properties were investigated in detail. The absorption and luminescence spectra of the polarized light were measured, and the lifetime of excited states of³P_J is determined. Transition intensities in the absorption and emission were calculated in accordance with the theory of the f-f-transition intensity taking into account the interconfigurational interaction. Cross sections of stimulated emission were found by Füchtbauer-Ladenburg method. Under InGaN laser diode pumping the continuous wave laser generation at 522.6 nm (³Р₁-³Н₅) was demonstrated for a Pr-doped mixed fluoride crystals. A maximum output power of 0.38 W and a slope efficiency of 19% were achieved.

празеодим, смешанные фториды, поглощение, люминесценция, лазер видимого диапазона, praseodymium, mixed fluoride, absorption, fluorescence, visible laser

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