Modulation of a photon echo shape in a ruby caused by hyperfine strucrture of trivalent ions of "Cr-53"

Abstract

Temporal shape of a primary photon echo (PPE) in a ruby is experimentally investiagted. Using of special equipment, including a dye laser and a stroboscopic oscilloscope, allows to observe the "beats" of temporal shape of primary photon echo. Analysis shows that these "beats" are due to the hyperfine interaction of electrons of "Cr-53" isotope ions with their nuclei.