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Optica Publishing Group
  • International Laser Science Conference
  • Technical Digest Series (Optica Publishing Group, 1986),
  • paper THE1

Chromium-sensitized rare-earth garnet lasers

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Abstract

Cr-doped garnets such as YSAG and YSGG emit broadband Cr fluorescence in the near-infrared spectral region. Due to a resonant dipole-dipole interaction between Cr3+ and rare earth ions like Nd3+, Tm3+, and Ho3+, efficient nonradiative transfer can be achieved in such Cr-sensitized systems. Even Cr3+ in YAG with a rather narrowband emission at a strong crystal field site can be used to sensitize especially Tm3+ because of the overlap between the Cr emission and Tm absorption in YAG.

© 1986 Optical Society of America

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