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Conferences > IQEC > 1990 > QWD > QWD22
  • International Quantum Electronics Conference
  • OSA Technical Digest (Optica Publishing Group, 1990),
  • paper QWD22

Nonlinear spectroscopy of the alexandrite R1 line

T. CATUNDA and L. A. O. NUNES

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Abstract

The nonlinear effect in Cr+3 doped crystals has been studied by populating the excited metastable level 2E through the 4T2 absorption band due to its higher absorption cross section compared with the R lines. The excited state 2E has a complex susceptibility different from that of the ground state so the material susceptibility changes in proportion to the excited state population.1 However, when the laser is sintonized near one of the R lines (the direct transitions between the ground and excited states), we must also consider the effect of this resonant interaction on the nonlinearity.

© 1990 Optical Society of America

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