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Growth of GdVO4 composite single-crystal rods by the double-die edge-defined film-fed growth technique

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초록

The growth of composite-structured Nd : GdVO4 single crystal rods by the double die EFG method is reported. Two crucibles are combined with an outer and inner die for ascending of different melt. The composite-structured Nd : GdVO4 single crystal rods with a length of 50 mm and an outer diameter of 5 mm including of inner Nd-doped core region with diameter 3 mm were grown successfully. Nd distribution in the radial direction has graded profile from result of EPMA. Absorption coefficient in the core region at 808 nm was 42 cm−1 . Finally, we demonstrated the laser oscillation using our composite crystal and 2-W output was obtained.

Abstract

The growth of composite-structured Nd : GdVO4 single crystal rods by the double die EFG method is reported. Two crucibles are combined with an outer and inner die for ascending of different melt. The composite-structured Nd : GdVO4 single crystal rods with a length of 50 mm and an outer diameter of 5 mm including of inner Nd-doped core region with diameter 3 mm were grown successfully. Nd distribution in the radial direction has graded profile from result of EPMA. Absorption coefficient in the core region at 808 nm was 42 cm−1 . Finally, we demonstrated the laser oscillation using our composite crystal and 2-W output was obtained.

참고문헌 (8)

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  4. M. Tsunekane, "High-power operation of diode edge-pumped, glue-bonded, composite Yb : Y2Al5O12 microchip laser with ceramic undoped YAG pump lightguide", Jpn. J. Appl. Phys, 44, pp.1164~ (2005)
  5. T. Dascalu, "90W continuouswave diode edge-pumped microchip composite Yb : YAG laser", Appl. Phys. Lett, 83, pp.4086~ (2003)
  6. V. Lupei, "Highly efficient 1063-nm continuous-wave laser emission in Nd : GdVO4", Opt. Lett, 28(23), pp.2366~ (2003)
  7. K. Shimamura, "A new crystal growth method for in situ core doping", J. Cryst. Growth, 142, pp.400~ (1994)
  8. K. Kitamura, "Single crystal of lithium niobate or tantalate and itsand apparatus for producing an oxide single crystal, U. S. Patent", ~

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