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EFFECTS OF Ce3+ ON PROPERTIES OF THE ~1.6μm WAVELENGTH LASER FROM THE Er3+ DOPED YAG CRYSTAL

HUANG LI-LEI

EFFECTS OF Ce3+ ON PROPERTIES OF THE ~1.6μm WAVELENGTH LASER FROM THE Er3+ DOPED YAG CRYSTAL

HUANG LI-LEI
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  • Received Date:  19 May 1998
  • Published Online:  20 January 1999

EFFECTS OF Ce3+ ON PROPERTIES OF THE ~1.6μm WAVELENGTH LASER FROM THE Er3+ DOPED YAG CRYSTAL

  • 1. 中国计量学院光电子研究所,杭州 310034

Abstract: The absorption cross-section of Ce3+ ions in the Ce3+,Er3+∶YAG crystal has been measured.The laser threshold energy (or power) and laser slope efficiency are calculated using a formula deduced from rate equations on the transitions of energy levels.It is shown that the effect of Ce3+ ions in Ce3+,Er3+∶YAG on properties of the laser at ~1.6μm wavelength depends upon the active ion concentration and the length of the crystal rod.The effect of Ce3+ ion is to reduce the laser threshold energy and increase the slope efficiency,when the crystal rod is shorter or the concentration of Er3+ ion is lower.But when the crystal rod is longer or the concentration of Er3+ ion is higher,the effect of Ce3+ ions is on the contrary.

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