Laser properties of Nd~3+ in K_5Nd(MoO_4)_4 stoichiometric disordered crystal disordered crystal

摘要

The spectroscopic and laser properties of K_5Nd(MoO_4)_4 crystal have been thoroughly investigated to show the relationship between the optical properties of Nd~3+ ions and the crystal structure. High-resolution site-selective exci- tation spectroscopy performed at low temperature has demonstrated the existence of two broad crystal field site dis- tributions for Nd~3+. In agreement with this result, a broad laser emission has been observed. The shape and width of the laser line strongly depend on the polarization of the pump pulse. The temporal evolution of the laser spectrum shows remarkable changes in its spectral structure.