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- W2171744448 abstract "Optical absorption, fluorescence, and laser characteristics of lithium neodymium tetraphosphate (LiNdP <inf xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>4</inf> O <inf xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>12</inf> , abbreviated as LNP) were examined. The crystal belongs to the monoclinic system (pseudoorthorhombic system) and the Nd content is <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>4.37 times 10^{21}</tex> cm <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>-3</sup> . The lifetime of the <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>4</sup> <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>F_{3/2}</tex> level is 120 μs, which is one-half of 230μs observed in Nd:YAG. The largest effective emission cross section at the line peak ( <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>1.047_{7} mu</tex> m) was spectroscopically determined as <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>3.2 times 10^{-19}</tex> cm <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sup> for the electric vector parallel to the pseudoorthorhombic <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>c</tex> axis and quantum efficiency was estimated as 0.48. Quasi-continuous laser oscillation pumped by a chopped Ar-ion laser was achieved with a 1.85-mm-long crystal. The output light was linearly polarized along the pseudoorthorhombic <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>c</tex> axis of the crystal, which does not depend on the polarization direction of the pump light. The measured threshold and round-trip loss yield the value of <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>3.1 times 10^{-19}</tex> cm <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sup> for the effective emission cross section of LNP, which is in good agreement with the value obtained from the spectroscopic data." @default.
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- W2171744448 date "1975-07-01" @default.
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- W2171744448 title "Spectroscopy and laser oscillation properties of lithium neodymium tetraphosphate" @default.
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- W2171744448 doi "https://doi.org/10.1109/jqe.1975.1068653" @default.
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