Physical review. B, Condensed matter
Modulation of photon-echo intensities by electric fields: Pseudo-Stark splittings in alexandrite and YAlO3 : Er3+
Y. P. Wang, Richard S. Meltzer
Abstract
We describe and demonstrate a method for performing ultrahigh-resolution optical spectroscopy in the time domain which utilizes modulations in the intensity of the two-pulse photon echo in the presence of a perturbation that splits the optical transition frequencies of two or more subgroups of ions. The method is applied to a measurement of the pseudo-Stark effect in alexandrite and ${\mathrm{YAlO}}_{3}$:${\mathrm{Er}}^{3+}$. Stark shifts of \ensuremath{\simeq}100 kHz are observed, but the technique is capable of resolutions 10 kHz in some systems.