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- W2045607844 abstract "Several Tm,Ho-doped LuLF and YLF crystals were grown using the Czochralski method. Crystals were pulled in a furnace with atmospheric control system. Pulling and rotation rates were 1 mm/hr and 15 rpm, respectively. High purity (>= 99.99%) fluorides were used as starting materials. High vacuum (approximately equals 10<SUP>-5</SUP> torr) prior to the growth and CF<SUB>4</SUB> gas during the growth were applied. Single crystals of up to 20 mm in diameter and 80 mm in length were successfully grown. Various laser rods of sizes 4 X 3 X 2.7 mm<SUP>3</SUP> were prepared from the grown crystal boules. The crystal ends were Brewster- cut to minimize the reflection losses inside the cavity. Two quasi-CW LD-arrays of 6 X 60 W each side-pump the crystals. The pump beam is focused using two lens ducts of length 64 mm to a waist of 2.5 X 2.5 mm<SUP>2</SUP>. The nearly hemispherical laser cavity is formed by a flat high reflector and a 300 mm radius of curvature 5% transmission output coupler. At room temperature, up to 13.5 mJ (9.9 mJ) with a slope efficiency of 10.5% (7.5%) has been demonstrated at 1 Hz for 5% Tm, 0.5% Ho:LuLF (5% Tm, 0.5% Ho:YLF)." @default.
- W2045607844 created "2016-06-24" @default.
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- W2045607844 date "2001-05-01" @default.
- W2045607844 modified "2023-10-16" @default.
- W2045607844 title "Growth and characterization of Tm,Ho-doped LuLiF 4 and YLiF 4 crystals" @default.
- W2045607844 doi "https://doi.org/10.1117/12.424638" @default.
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