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Optica Publishing Group
  • CLEO/Europe and IQEC 2007 Conference Digest
  • (Optica Publishing Group, 2007),
  • paper CD8_2

MgO-doped PPLN with cascaded structure for intracavity frequency doubling of optically pumped semiconductor disk lasers

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Abstract

Optically-pumped semiconductor (OPS) disk-lasers [1] are of considerable interest as a compact and brilliant laser source that can be produced at low cost for high production volumes. By intracavity frequency doubling a wide range of the visible spectrum can be accessed. Second-harmonic generation (SHG) of OPS disk-lasers requires nonlinear crystals with broad temperature and bandwidth acceptances to be applicable to consumer electronic devices. We present magnesium-oxide doped periodically poled lithium-niobate (MgO:PPLN) with segments of cascaded poling periods [2] as a nonlinear crystal for intracavity frequency doubling of an OPS disk-laser to the green spectral range. This quasiphase-matched nonlinear crystal is designed for high bandwidth acceptance and allows for significant conversion efficiencies at relatively low powers.

© 2007 IEEE

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